ASE A4 practice test Questions and 100% Complete Verified Solutions 2024/2025, Exams of Automobile Engineering

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ASE A4 practice test Questions and

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2. A driver says that the front end of his car vibrates up and down while traveling at most road speeds. Tech A says that too much runout of the front wheels could be the cause. Tech B says that a static out of balance of the front wheels could be the cause. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B C. Both Techs are right. Too much runout or static out of balance in the front wheels will cause a vibration
3. A vehicle has front wheel shimmy at low speed and requires increased steering effort. Tech A says that too much positive camber could be the cause. Tech B says that too much Positive caster could be the cause. Who is right? A Tech A only B. Tech B only C. Both A and B D. Neither A or B B. Excessive positive caster will increase steering effort, cause the steering wheel to return too rapidly. cause wander at high speed and shimmy at low speed.
4. All of these could cause tire wear if not within manufacturer's Specs EXCEPT: A. Caster B. Wheel balance C. Toe-In D. Camber A. Caster that is out of spec will affect steering and handling characteristics, but will not cause tire wear. Whereas, too much toe in or out would severely wear the tires. Additionally, excessive camber would cause inside or outside shoulder wear on the tire, depending on whether the camber was too negative or positive.

5. A vehicle with variable assist power steering has a lack of power assist in both directions. Tech A says That the problem is in the electronic control system. Tech B says that there could be a problem in the steering gear or a bad power steering pump. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B B. Although further diagnosis will be necessary, Tech B is right. Tech A is wrong because, when there is a malfunction in a variable assist power steering system, the system will allow full power steering.
6. A customer complains that a vehicle wanders on a bumpy road and needs continual driver correction to stay straight. What could be Wrong? A. Excessive negative front caster B. Insufficient front toe C. Rear or front bump steer D. All of the above D. Excessive negative caster, insufficient front toe, and front or rear bump steer could cause a vehicle to wander on a bumpy road.
7. While aligning a front end, a technician finds the toe out on turns (turning Radius) to be greater than the manufacturer's Specs and it has 2.0 degrees difference from the left side to the right side. Which, if any, of the following could be the cause? A. Nothing is wrong; the vehicle has a non symmetrical steering design. B. Bent pitman arm C. bent tie-rod D. Both B and C D. either a bent pitman arm or a tie rod could cause the specifications for the toe out on turns to be out of spec. Vehilces with non symmetrical steering systems will have a difference from side to side, but the difference will not exceed the manufacturer's specs and it rarely has a greater than 1.5 degrees difference from side to side.
8. When checking a tire, a tech find it to have too much radial (up and down) runout. Tech A says to rotate the tire and wheel assembly on the mounting studs to correct the problem. Tech B says to rotate the tire on the wheel assembly to attempt to bring the runout within specs. Who is right? A. Tech A Only B. Tech B Only C. Both A and B C. Neither

B. Rotating the tire on the wheel will compensate for wheel/tire differential (positioning the highest spot on the tire at the lowest spot on the wheel.) Whereas', rotating the wheel assembly on the mounting studs will have no effect on runout.

9. If you readjust camber on the left front strut, which, if any, of these specs might change A. Right caster B. Left toe and total toe C. SAI D. None of the above. B. Readjusting camber will have an affect on the individual toe for the left wheel as well as the total toe. SAI is not adjustable and generally, caster is not adjustable either on a strut suspension.
10. Too much caster on the left front wheel will cause the __________ A. vehicle to drift to the left B. Left tire to wear on the outside edge C. vehicle to drift to the right D. left tire to wear on the inside edge. C. A vehicle will tend to steer or drift to the side with the least amount of caster. Caster will not cause tire wear, but excessive camber will cause wear to the inside of outside shoulders of a tire.
11. A pressure test is being performed on a car with power steering. The pressure readings taken when the wheels are at the right and left stops are below specs. The tester readings are normal when the tester shutoff valve is closed. tech A says that these readings could be caused by a bad steering gear. tech B says that a bad pump could cause these readings. Who is right? A. Tech A Only B. Tech B Only C. Both A and B D. neither A. A bad steering gear would cause the readings to be low when the steering is at the right and left stops, but the readings would be normal with the tester shutoff valve closed.
12. a vehicle with a manual rack and pinion steering gear has a shimmy. Tech A says that worn rack to frame mounting bushings could be the cause. tech B says that loose inner or outer tie rod ends (sockets) could be the cause. Who is right? C. Both Techs are right. Steering play or looseness may occur if the rack to frame mounting bushings are worn, or if the inner or outer tie rod ends are loose. both of these conditions can result in a shimmy.
13. The ball joints on a Macpherson strut- type suspension are being replaced. Tech A says that coil spring compressor should be installed before separating the control arm and the spindle. Tech B says that the wheel alignment should be checked after the ball joints have been replaced. Who is right? A. tech A Only

B. Tech B Only C. Both A and B D. Neither B. The wheel alignment should be checked after the ball joint (or any suspension part) is replaced. It is not necessary to install a coil spring compressor prior to separating the control arm and the spindle because the MacPhearson strut assembly contains a spring. However, a spring compressor should be used if the strut is being disassembled.

15. The rear thrust line reads to the left (drivers side) while the vehicle is at normal ride height. If the wheels were pointing straight ahead, which direction would the vehicle tend to wander A. Veer to the left B. Veer to the right C. Wander to both left and right D. No change occurs B. If the thrust line is to the left and the steering wheel is held straight, the vehicle will veer to the right. This happens because the rear wheels will travel towards the left, Which will force the front of the vehicle to the right.
16. Tech A says that the bearing preload must be set when overhauling a manual steering gear. Tech B says that the sector lash must be set when overhauling a manual steering gear. Who is right? A. Tech A only B. Tech B Only C. Both techs D. Neither A or B C. Both techs are right. Both bearing preload and sector lash adjustments are necessary after an overhaul. Correct sector lash prevents gear binding and excessive steering wheel free play. Correct preload prevents worm end play and loose steering feel.
17. A vehicle with power steering has assist in only one direction. Tech A says that oil leaking past a worm shaft seal ring could be the cause Tech B says a broken ring on the worm piston could be the cause. Who is right? A. Tech A B. Tech B C. Both A and B D. Neither A or B C. Both techs are right. An oil leak past the worm shaft oil sealing ring or a broken ring on the worm piston could cause the power steering to only have assist in one direction.
18. A vehicle with power steering has no assist in either direction. Tech A says that a loose power steering belt could be the cause. Tech B says that a faulty flow control valve could be the cause.

Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B C. Both techs are right. A faulty control valve will reduce the fluid pressure and cause an increase in steering effort. A loose power steering pump drive belt will create a similar condition.

19. A customer complains of excessive body roll. Which of the following is the MOST likely cause. A. broken stabilizer bar link B. worn ball joint C. weak coil spring D. leaking shock absorber A. The stabilizer bar, also known as the sway bar, is used to control body roll, and a broken link would allow excessive body roll.
20. Tech A says that the wheel bearings can be adjusted by tightening the nut while turning the hub , and then backing off the nut part of a turn. Tech B says the end play in the bearings can be checked using a dial indicator. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither tech C. Both techs are right. Tech A is describing a proper adjustment procedure for tapered roller bearings. tech B is also right because, after the adjustment, there should be 0.001-0.007 Inches end play. However, always consult the vehicle service manual for the specific adjustment procedure.
21. Tech A says that the ride height of a vehicle is always adjustable. Tech B says that the ride height of a vehicle can only be adjusted on certain models. Who is right? A. Tech A only B. Tech B only C. Both A and B D Neither tech B. Ride height is only adjustable on some models. On most models, parts replacement is the only way to correct ride height.
22. Tech A says that caster is not a tire wearing angle. Tech B says that toe-in or Toe-out will cause tire wear. Who is right? A. Tech A only B. Tech B only

C. Both A and B D. Neither Techs C. Both techs are right. Caster will have an effect on steering and handling, but will not cause tire wear. However, if a suspension system has too much toe in or toe out, tire wear will result.

23. Tech A says that if steering axis inclination is out of spec, A bent control arm may be the cause. Tech B says that if steering axis inclination is out of spec, the spindle can be shimmed to correct the problem. Whos is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B A. A bent control arm would cause the angle of pivot points to change and subsequently change the steering axis inclination angle. Tech B is incorrect because shimming a spindle is not a recommended procedure and it would affect eh included angle, not the steering axis inclination angle.
24. Tire cupping is MOST likely caused by: A. Worn shock absorbers B. wheel imbalance C. Loose tie-rod ends D. All of the above D. Tire cupping or scalloping can result from worn shock absorbers, improperly balance wheels/ tires or loose/ defective tie rod ends.
25. Which of the following is most likely to be lubricated and sealed by the manufacturer? A. Needle bearings B. tapered roller bearings C. plain bearings. D. Ball bearings D. Most ball bearings are factory lubricated and sealed for Life.
26. Excessive steering wheel play is felt in the steering wheel on a manual steering system. Tech A says that a worn idler arm could be the cause. Tech B says that a misadjusted mesh preload may be the cause. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither Tech C. Both techs are right. Excessive steering wheel lay may result from a worn idler arm and/or maladjusted mesh preload.

27. A vehicle suspension system is being checked for radial and axial tolerances. Tech A says that ball joints should be checked. Tech B says that The idler arm should be checked. Who is Right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B A. When checking the radial and axial tolerances, an inspection of the ball joints should be performed. The idler arm would not affect radial or axial tolerances.
28. A vehicle has a noise coming from the power steering pump. Tech A says that a loose belt could be the cause. Tech B says that air in the system could be the cause. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B C. Both Techs are right. A loose power steering pump belt and air could both cause power steering pump noise.
29. All of these are types of power steering pumps, Except A. Vane B. Roller C. Slipper D. Crescent D. A power steering pump can be a roller, slipper or vane type.
30. all alignment measurements on a vehicle are within spec, except SAI and Toe-out on turns. Tech A says that these alignments angles are not adjustable, so there is nothing more to do. Tech B says neither of these angles can cause tire wear. Who is right? A. Tech A only B. Tech B only C. Both tech A and B D. Neither A or B D neither tech is right. While it is true that SAI and toe out on turns cannot be adjusted, they indicate that some component is bent and must be replaced. Incorrect SAI will cause changes in camber while turning and incorrect toe out will abrade tire rubber.
31. A car is raised on a lift with the wheels pointed straight ahead and when the engine is started, the wheels slowly turn to the right. Tech A says that a binding upper bearing on a Macpherson strut or an improperly installed RBS Tie-rode end could cause this condition. Tech B says that the power steering valve is out of adjustment. Who is right?

A. Tech A only B. Tech B only C. Both A and B D. Neither Techs B. a binding upper bearing or incorrectly installed RBS tie rod end would pull the steering to a specific point and stop regardless of whether the engine was running or not. Since the engine needs to be running to have this condition occur, the power steering valve is causing the problem.

32. On a 4 wheel driver vehicle with drag link steering, after the alignment is complete and correct, The steering wheel is turned to the left when the vehicle is driving straight ahead. Tech A suggests removing the steering wheel and replacing it in an orientation closer to straight ahead. Tech B suggests advising the driver that the linkage does not include enough adjustment to center the steering wheel. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B C. Both techs are right. Many steering systems with this type linkage geometry do not have fully adjustable toe links, but the vehicles have steering wheel and column splines that allow multiple orientations of the steering wheel to the column.
33. A tire on an alloy wheel is being balanced. Tech A says that clip on weights should be used. Tech B says that tape on should be used. Who is right? A. Tech A only B.Tech B only C. Both A and B D. Neither A or B B. never use clip on weights with cast allow wheels because the clips can scratch the aluminum. Also, there will eventually be electrolytic damage between the steel of the clip and the aluminum of the wheel, particularly in areas where salt is used on the roads in the winter. Not only will the weight fall off, but the wheel may be corroded and damaged as well.
34. A customer is purchasing new front tires for her front- wheel driver vehicle. Tech A says the best way to balance the tires is to mount them on the vehicle and use an on axle spin balancer. Tech B says the best way to balance the tires is to balance them on a spin balancing machine prior to installation. Who is right? A. Tech A B. Tech B C. Both A and B D. Neither A or B

B. On axle spin balancing is usually not performed on front wheel drive vehicles because it is less accurate and more difficult. The chief problem is supporting the raised wheel in such a way the half-shaft is perfectly straight coming from the transaxle. The operations of some constant velocity (CV) joints may change the balance as the axle rotates and cause balance readings to be inaccurate.

35. When the suspension is worked up and down on a vehicle equipped with a Macpherson strut type suspension, The camber spec changes more on one side than the other. Tech A says that camber can't be adjusted on a Macpherson Strut. Tech B says that the strut on the side that camber changes the most may be bent. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B B. While some MacPherson strut assemblies do not allow camber or caster adjustments, many vehicles do have eccentrics or slotted mounting holes to provide adjustment. An abnormal change in camber normally indicates a bent strut.
36. A vehicle equipped with power steering exhibits excessive steering effort. All hydraulic system specs are correct and the alignment is within specs. Tech A says that this condition may be caused by corrosion in the steering linkage ball studs. Tech B says that the intermediate shaft U joints could be binding. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither Tech C. Both techs are right. Worn dust boots on ball studs can allow contamination and rusting of ball studs in their sockets. However, some vehicles have an intermediate shaft connecting the steering column with the gear. The U-joints on this shaft are subject to rust and binding.
37. medium-duty light truck is on the alignment rack. Tech A points out that there is no arch at all in the rear leaf springs and says this indicates the springs are either worn out or broken. Tech says that this is normal on newer trucks and is not a cause for concern. Who is right? A. Tech A only B. Tech B only C. Both tech A and B D. Neither A or B B. Advancements in metallurgy have allowed leaf springs to be manufactured with almost no arching, which allows for lower profiles and lighter weight without sacrificing load capacity.
38. A vehicle equipped with a Macpherson Strut type suspension is in the shop for new tires and an alignment. The tire installer noticed that the vehicle has some play in the left side inner tie rod

end and informs the alignment Tech. What should the alignment tech tell the customer? A. it is not a problem that will affect alignment. B. He'll align the front end, but they should replace the inner tie rod end soon. C. The inner tie rod end needs to be replaced before an alignment can be performed. D. He can se the vehicles alignment so that the play in the inner tie rod will be compensated for. C. Play in the inner tie rod will not allow a correct alignment to be performed. The tie rod must be replaced prior to performing an alignment.

39. a 1 ton pickup truck is in for an alignment. The pickup truck usually carries some pipes and ladders on a rack attachment on the pickup's bed. these items need to be removed in order to raise the truck on the alignment rack. After removing these items, the alignment tech realizes that the frame angle has increased by 1.5 degrees. The caster specs for the vehicle is 3.0 degrees. Tech A says that the caster should be adjusted to 1.5 degrees in order to provide the best handling when the vehicle is loaded. Tech B says that the caster should be adjusted to 4. degrees in order to provide the best handling when the vehicle is loaded. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B A. If a vehicle is driven normally loaded, the frame angle should be considered when measuring and adjusting caster. In the case of a positive frame angle, the amount of frame angle should be subtracted from the caster specification. If the vehicle is not normally loaded while being driven, it is not necessary to consider frame angle when measuring and adjusting caster.
40. a vehicle just had new stabilizer bar links and bushings installed. Tech A says that the wheels need to be straight ahead with the front end supported before tightening the link's fasteners. Tech B says the vehicle should be resting level on its wheels at its normal ride height before the link's fasteners are tightened. Who is right? A. Tech A only B. Tech B only C. Both A and B D. neither B. A vehicle should be resting on its wheels at its normal ride height when the stabilizer bar link bushing fasteners are tightened in order to get the longest life out of the new bushings.
41. A vehicle equipped with manual rack and pinion steering is having the front end inspected. Tech A says that the inner tie rod ends should be inspected while in their normal running position. Tech B says that if movement is felt between the tie rod ball and the socket while the tire is moved in and out, the inner tie rod should be replaced. Who is right? A. Tech A only

B. Tech B only C. Both A and B D. Neither A or B C. Both techs are right. Inner tie rods should be inspected while in their normal running position. This allows the tie rod assemblies to be level and prevents binding that may occur when the suspension is allowed to hang free. Any play felt between the tie rod ball and the socket while the tire is moved in and out indicates that the assembly is worn and requires replacement.

42. Which of the following four wheel alignment inspection and measurement sequences is correct? A. Ride height, rear camber, rear toe, front caster. B. Ride height, front caster, front camber, Front toe C. Rear toe, rear camber, front caster, front camber D. Ride height, rear toe, rear camber, Front caster A. Ride height must be measured and corrected before an alignment is performed. When performing a four wheel alignment, the rear must be adjusted first beginning with the camber adjustment.
43. A vehicle with power steering is parked with the engine running. A hissing noise is heard when the steering wheel is turned back and forth. Tech A says that the Power steering pulp could be bad. Tech B says that this sound is part of normal operation. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B B. A hissing noise, most often heard when the wheels are turned and the vehicle is not moving, is caused by normal relief valve operation and is not an indicator of a power steering system problem.
44. All of the following could be caused by a misaligned subframe EXCEPT: A. Difficulty shifty the transmission B. Hard steering C. Tire wear D. Poor ride quality D. Many vehicles use sub frames to mount the drivetrain and/ or suspension and steering. If the sub- frame is misaligned due to incorrect installation after service or due to collision damage, it can cause binding in the shift and steering linkage. The alignment could also be incorrect which could cause tire wear.
45. All of the following suspension components are always replaced as a unit EXCEPT: A. Tie rod End B. Idler arm

C. Pitman arm D. Ball joint B. Although most idler arms are replaced as a unit, on some the bushings can be serviced. Ball joints, tie rod ends, and pitman arms are always replaced.

46. at the beginning of a power steering system pressure test, with the shutoff valve open, the pressure reading is above specs with the fluid at normal operating temperature and the front wheels in the straight ahead position. Tech A says that there could be a restriction in the power steering pressure hose. Tech B says that the poppet valve in the steering gear could be the cause. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B C. Both Techs are right. Either one could be the cause for the above normal pressure.
47. Tech A says that dynamic wheel balancing can be accomplished with a bubble balancer. Tech B says that static wheel balancing requires a spin balancer. Who is right? A. Tech A only B. Tech B C. Both A and B D. Neither A or B D. Neither Tech is right. A bubble balancer is used to static balance a tire, while a spin balancer is used to dynamic balance a tire.
48. All of the following will cause a tire to wear at the edge EXCEPT: A. Incorrect camber B. Overinflation C. aggressive cornering D. underinflation B. Overinflation will cause excessive wear in the center of the tread.
49. all of the following can cause incorrect vehicle ride height EXCEPT: A. Broken leaf spring shackle B. Fatigued Coil spring C. Incorrectly adjusted torsion bars D. Worn shock absorbers D. Misadjusted torsion bars, sacked coil springs and broken leaf spring shackles would all cause a vehicles ride height to be too low. Worn shock absorbers would not affect vehicle ride.
50. Tech A says that lubricant can be used to help seat a tire on a wheel rim. Tech B says that if necessary, it is OK to exceed the maximum tire pressure rating to seat the bead, as long as

pressure is reduced immediately afterword. Who is right? A. Tech A only B. Tech B Only C. Both A and B D. neither A or B A. When seating tires on rims, never exceed the maximum pressure spec set by the tire manufacture for the tire.

51. Shock absorbers are being installed in the rear of a rear wheel driver solid axle vehicle with coil springs. Tech A says the axle must be supported before the shocks are removed. Tech B says that the coil springs must be compressed with a spring compressor. Who is right? A. Tech A only B. Tech B only C. both A and B D. Neither A or B A. in this suspension design, the shocks are under tension from the coil spring when the vehicle is raised and the suspension is at full rebound, therefore the axle must be supported before the shocks are removed. It is not necessary to compress the coil springs to remove the shocks.
52. Technician has just installed a replacement for a failed power steering gear. Which of the following should he do next? A. Bleed the system B. Pressure test the system C. flush the system D. Check wheel alignment C. When the steering gear failed, it most likely contaminated the whole system. The system should be flushed, and then air bled. Toe may need adjusting due to the new gearbox, but a pressure test will only be necessary if there are any more problems.
53. Tech A says that setback is caused by collision damage. Tech B says that setback can be designed into a vehicle. Who is right? A. Tech a only B. Tech B only C. Both A and B D. Neither A or B C. Both techs are right. Ordinarily, if you find setback on a vehicle, it means there has been frame or unibody damage that has shifted the mounting points of the suspension components. However, on a few vehicles, such as light trucks with Twin I beam front suspension, the front wheel is slightly farther back on one side by design.

54. Tech A says that a power steering pump pulley should be pressed onto the pump shaft until it stops, to ensure proper pulley alignment. Tech B says that Pulley replacement requires that the power steering pump be removed from the vehicle. Who is right? A. Tech A only B. Tech B only C. Both A and B D. neither A or B D. Neither tech is right. Pulley alignment should be checked as the pulley is installed; many pulleys are not installed until they bottom on a shoulder but rather just until they align. Many power steering pumps cannot be removed from the vehicle until the pulley is removed.
55. All of the following could warrant replacement of a rack and pinion inner tie rod end EXCEPT: A. Torn Bellows Boot B. Failed articulation test C. socket looseness D. Incorrect rack bearing preload D. a torn bellows boot would let dirt and grit get to the tie rod end socket and could cause it fail. Looseness in the socket or failing an articulation effort test would require replacement. incorrect rack bearing preload would not affect the inner tie rod end.
56. Tech A says that all vehicles with Strut-type front suspension require that the strut be removed to replace the front coil springs. Tech B says that the coil spring should be compressed before removal of an SLA-Type front suspension. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B B. The coil spring on a SLA suspension vehicle should be compressed with a suitable spring compressor before the ball joint is disconnected, so it can safely be removed. Tech A is wrong because on vehicles with modified struts, the coil spring is located between the lower control arm and frame, as on an SLA suspension vehicle, and the strut need not be removed to replace the coil spring.
57. All of the following are methods used by manufacturer to attach ball joints to control arms EXCEPT: A. Riveted on B. Welded ON C. Threaded ON D. pressed ON B. Ball joints can be pressed, threaded or riveted onto control arms. Riveted joints are usually replaced with the bolt on replacements after the rivets are removed.

58. All of the following are true of torsion bars EXCEPT: A. They can be mounted Longitudinally or transversely. B. They serve the same function as coil springs. C. They are interchangeable from side to side. D. They can be used to adjust ride Height. C. Torsion bars are not normally interchangeable from side to side. This is because the direction of the twisting or torsion is not the same on the left and right sides.
59. Which of the following causes for ball joint replacement could also require steering knuckle replacement? A. Torn dust boot B. worn ball and socket C. wear indicator below surface D. Broken ballstud D. If the ballstud has broken, it is possible that the tapered hole in the steering knuckle has become distorted. You can check this by trying the new balljoint stud in the hole: if there is any free-play or if the new tapered stud can rock in the hole, the hole is rounded out. If this has occurred, the steering knuckle must be replaced.
60. Tech A says that, when on vehicle balancing a drive axle tire, the opposite wheel must also be supported off the ground if the vehicle is equipped with a limited slip differential. Tech B says that rotating on vehicle balanced tires presents no special problems. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B A. If the vehicle is equipped with a limited slip differential, raise the opposite wheel to be safe. Otherwise, the vehicle could either damage the differential or drive itself over the wheel chocks and cause an accident. Tech B is wrong because when wheels have been spin balanced on the axle, they must be rebalanced whenever the tires are rotated.
61. Tech A says that vehicle ride height is measured between the ground and the rocker panel. Tech B says that ride height is measured between suspension components. Who is right? A. Tech A only B. Tech B only C. Both A and B D. neither A or B C. Both techs are right. Both measurements are commonly used. Consult the vehicle service manual for specs and measuring locations.

62. All of the following are sensors in an electronically controlled suspension system EXCEPT: A. Wheel speed sensor B. Wheel position sensor C. Vehicle speed sensor D. Height sensor A. The wheel speed sensor is used in ABS, traction control and stability control systems. All of the other sensors are used in electronically controlled suspension systems.
63. A customer complains that his vehicle stalls repeatedly while parallel parking. Tech A says that the IAC valve is the most likely cause. Tech B says the power steering pressure sensor is at fault. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A and B B. During parallel parking maneuvers, the Steering wheel is turned against the stops while the vehicle is relatively stationary. This causes high pressure in the power steering system, which places a load on the engine. The power steering pressure sensor informs the PCM/ECM of this high pressure, causing the PCM/ECM to in turn adjust the IAC valve to raise the engine idle speed. If the sensor is faulty, the PCM/ECM will not receive the signal and the engine will stall under the increased load. Tech A is wrong because if the IAC valve was faulty, the vehicle could stall at any time, and not just when parallel parking.
64. an upper control arm is being removed from a late model vehicle with SLA suspension. Tech A says that the lower arm should be supported with a jack stand close to the ball joint. Tech B says that the coil spring must be compressed with a spring compressor. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B A. In an SLA suspension, the coil spring is located between the lower control arm and the vehicle frame. By supporting the lower arm near the ball joint, the weight of the vehicle will keep the coil spring compressed enough to allow removal of the upper control arm. If the lower control arm was being removed, then compressing the coil spring with a spring compressor would be necessary.
65. A vehicle pulls to the right during braking. Tech A says the problem is in the brake system, and the pull is most likely due to brake fluid on the linings or a seized caliper piston. Tech B says that the pull could be caused by worn right side strut rod bushings. Who is right? A. Tech A only B. Tech B only

C. Both A and B D. Neither A or B C. Both techs are right. Faulty brake components can cause a vehicle to pull to one side during braking. Worn strut rod bushings would cause the caster angle to change during braking, also resulting in the vehicle pulling to that side.

66. On a vehicle with conventional steering gear and parallelogram steering linkage, an incorrect toe setting can be caused by all of the following EXCEPT: A. worn idler arm bushings B. incorrect tie rod adjustment C. Bent center link D. too little worm bearing preload D. If there is too little worm bearing preload in the steering gear, the steering will feel loose but the toe setting will not be affected. All of the other answers could cause the toe setting to be incorrect.
67. All of the following are true statements regarding tapered wheel bearings EXCEPT: A. The bearings and outer races must be replaced as an assembly. B. They must be adjusted after installation. C. used bearings must be reinstalled on their original races. D. they are mostly used on drive axles D. Tapered wheel bearings are mounted between the hub and fixed spindle and are commonly used on non drive axles.
68. Tech A says an electric/electronic power steering system uses inputs from various sensors to deliver the proper amount of power assist. Tech B says the steering tuning programmed into the system control module determines the degree of power assist. Who is right? A. tech A only B. Tech B only C. Both A and B D. Neither A or B C. Both techs are right. The power steering control module regulate the degree of power assist based on inputs from a steering shaft torque sensor, steering wheel position sensor and vehicle speed sensor as well as the steering tuning programmed into the module.
69. Tech A says an indirect measurement Tire pressure monitoring system uses wheel speed sensors to measure tire pressure. Tech B says a direct measurement TPMS uses tire pressure sensors to measure tire pressure. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B

B. The direct measurement TPMS uses sensors mounted in each tire/wheel assembly that directly measure tire pressure. Tech A is wrong because the wheel speed sensors in an indirect TPMS do not measure tire pressure. The ABS wheel speed sensors monitor wheel speed, and a tire with low pressure is identified by comparing the relative wheel speed of each wheel. An increase in wheel speed by a wheel in comparison to the others indicates a difference in tire pressure, since the circumference of an underinflated tire will roll at a different number of revolutions per mile than one that is properly filled.

70. When replacing an integral hub/bearing assembly on a front wheel drive vehicle, all of the following must be removed EXCEPT: A. brake rotor B. brake caliper C. steering knuckle D. Wheel C. The steering knuckle does not have to be removed when replacing an integral hub/bearing assembly. However, it must be removed when replacing the press fit type front wheel bearing.
71. The included angle is equal to: A. steering axis inclination (SAI) plus caster B. SAI plus camber C. scrub radius plus toe out on turns D. thrust angle plus setback B. the included angle is equal to SAI plus camber. It is the angle formed between an imaginary line drawn through the centerline of the ball joints (or on strut suspensions, between the centerlines of the ball joint and the upper bearing) as seen from the front, and the centerline of the tire/wheel.
72. A vehicle with SLA suspension is being aligned. Caster and camber are adjusted using shims between the frame and upper control arm shaft. Tech A says that arranging shims to move the upper control arm toward the rear of the vehicle will increase caster. Tech B says that shimming the control arm out from the frame will decrease camber. Who is right? A. Tech A only B. Tech B only C. Both A and B D. neither A or B A. moving the control arm toward the rear of the vehicle will increase caster. Moving the control arm away from the frame will increase camber.
73. All four tires on a vehicle with an indirect TPMS are below inflation specs by an equal amount and the TPMS warning light did not illuminate. Tech A says the wheel speed sensors should be checked. Tech B says that all four sensors could not be bad and the problem is with the TPMS control module. Who is right? A. Tech A only

B. Tech B only C. Both A and B D. Neither A or B D. Neither Tech is right. The system is operating normally. An indirect TPMS cannot determine that there is a low inflation problem if all four tires are underinflated.

76. When checking a vehicle's power steering fluid level, a tech notices dark colored particles in the fluid. These are most likely from: A. Moisture in the system B. Wear or damage to the pump C. rubber components like the hoses are breaking down D. air in the system C. Evidence of dark colored particles in the fluid usually indicates that rubber components like the hoses or seals are breaking down. Metal particles are indicative of wear or damage to the pump and/or steering gear. Fluid that is foamy is caused by air in the system.
77. new power steering hoses have been installed on the vehicle in the previous question. Tech A says the system should be flushed. Tech B says the system should be filled with fresh ATF and the air bled from the system. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B A. Flushing the power steering system is necessary if the fluid is contaminated. Tech B is wrong because, not only should the system be flushed before refilling and bleeding, but the vehicle may not use ATF for power steering fluid. Many vehicles use fluid specifically designed for power steering systems. These specialized fluids are formulated to be compatable with the seals and other materials in the manufacturer's power steering system. using the wrong fluid can result in leaks, swelled seals or serious system damage.
78. The inner tread area of the front tires is worn on a vehicle with Macpherson strut type suspension. Tech A says the camber setting is incorrect. Tech B says the front coil springs could be sagged. Who is right? A. Tech A only B. Tech B only C. Both A and B D. neither A or B C. Both techs are right. Excessive negative camber will cause accelerated wear on the inside edge of a tire. As a spring sags on a MacPherson strut, the top of the tire will lean inward, wearing the inner tire tread area first.

79. A customer had new tires installed on his car 6000 miles ago and now wants them rotated. The owner's manual says the rear tires should be crossed when brought to the front and the front tires brought to the rear on the same side. All tires have arrows on the sidewalls. Which of the following is the proper service procedure? A. Follow the instructions in the owner's manual/ B. Move the back tires to the front and front tires to the back, but leave them on the same side. C. Dismount the rear tires from the wheels, flip them, and reinstall them on the wheels before moving them to the other side of the car. D. Either B or C D. The arrows on the side-walls indicate that these are directional tires, which are designed to give good performance only when rotating in the direction indicated by the arrow. The rotation pattern described in answer B could be used, or If the manufacturer's recommended pattern is followed, The procedure in answer C could be used to make sure the tires are rotating in the proper direction.
80. During a road test, a customer's car nose dives badly during braking, and also has a vibration and seems to "float" at highway speeds. When the vehicle is inspected, the tread on several tires appears choppy and scalloped, but the suspension components appear OK. Tech A says the symptoms are caused by worn shock absorbers. Tech B says new tires and an alignment will correct the problem. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A and B A. Even if shock absorbers show no signs of physical damage, they can still be worn out. Shocks wear gradually and should be replaced at regular intervals. the symptoms described are typical of work shocks. the vibration is caused by the choppy, scalloped tire tread wear, but if is worn shocks that have caused that wear. The worn shocks allow the wheels to bounce excessively, causing the tires to scrub against the road surface instead of roll, resulting in the tread deformities. Tech B is wrong because an alignment will not cure these symptoms, and without new shocks, the new tires will only wear in the same manner.
81. There is a 3 degree difference between the included angles on each side of a front wheel drive vehicle. Which of the following could be the cause? A. incorrect camber setting B. loose outer tie rod ends C. incorrect toe setting D. bent Macpherson strut. D. The included angle is the angle formed between an imaginary line drawn through the centerline of the ball joints(or between the centerlines of the ball joint and the upper bearing on strut suspensions) as seen from the front, and the centerline of the Tire/Wheel. The included angle is equal to SAI plus camber and is

not an adjustable angle. The included angles on each side of the vehicle should be within 0.5 of one another. A larger difference in side to side included angle indicates there is a bent component, like a spindle or MacPherson strut. The only way to correct included angle is to replaced the damaged spindle or strut.

83. A customer complains that his car pulls to the right on a level road. All of the following could be the cause EXCEPT: A. more positive caster on the right front wheel B. More positive Camber on the right front wheel C. Sagged left rear spring D. Under inflated Right front tire A. A vehicle will pull to the side with the least amount of positive caster. All of the other answers would cause a vehicle to pull to the right.
84. Tech A says that a vehicle with a TPMS can be identified by looking for a TPMS indicator on the instrument panel during the Key on engine off bulb check. Tech B says that all vehicle with TPMS have metal tire valve stems and this feature can be used as an identifier. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B A. Many newer vehicles have rubber stem sensors. Metal valve stems are an indication of a TPMS equipped vehicle, but they can no longer be used as a reliable identifier for all TPMS vehicles.
85. A customer complains that his car darts to one side of the other whenever he hits a bump. Which of the following could be the cause A. Unequal length half-shafts B. binding upper strut bearings C. worn steering rack mount bushings D. Binding tie rod ends C. The customer is describing the symptoms of "bump Steer" which is what happens when the vehicle wants to dart one way or another just as the suspension goes through jounce and rebound. This is caused by a change of Toe setting as the suspension works. A steering rack that is not parallel with the horizontal line of the front axle, because of worn mount bushings, could cause this condition. Answer A is wrong because unequal length halfshafts would cause "torque steer" during acceleration. Answers B and D are wrong because those defects would cause "memory steer" where the vehicle wants to go in a direction other than straight ahead.