ASE A2 Automatic Transmission Practice Test

1. After a long drive, red fluid is seen on the transmission case and under a vehicle's chassis. Technician A says this could be caused by fluid aeration. Technician B says this could be caused by engine overheating. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B


Answer A is wrong. Low or high fluid levels result in aeration. Overfilling or overheating a transmission results in fluid flowing from the vent or fill tube.

Answer B is wrong. Transmission fluid is cooled in the cooler located in the coolest radiator well of the engine's cooling system.

Answer C is correct. Both technicians are correct.

Answer D is wrong. Both technicians are correct.

2. There are metal flakes and shavings at the bottom of a transmission's oil pan. Which of the following is causing this debris?

  • A. This is normal.
  • B. A worn band.
  • C. A worn clutch.
  • D. Chipped gear teeth.


Answer A is wrong. This is not a normal condition.

Answer B is wrong. It is normal to find fine particles, especially around the magnet.

Answer C is wrong. Black pieces found in the bottom of the pan indicate worn clutch and band friction material.

Answer D is correct. Metal flakes and shavings found in the bottom of the oil pan indicate chipped or worn gearset teeth.

3. A vehicle with an automatic transmission creeps forward in neutral. Which of the following is MOST likely causing this condition?

  • A. The pressure regulator valve.
  • B. The manual valve.
  • C. A shift valve.
  • D. The throttle valve.


Answer A is wrong. The pressure regulator valve controls mainline pressure.

Answer B is correct. A worn or misadjusted manual valve can lead to pressure bleed between hydraulic circuits.

Answer C is wrong. Shift valves control the reactionary devices (clutches and bands).

Answer D is wrong. Answer B is correct.

4. When removing a torque converter from an automatic transmission, the technician should:

  • A. Measure the depth of the torque converter into the transmission's bell housing before removal.
  • B. Inspect the torque converter's hub for discoloring, nicks, scratches, and burrs.
  • C. Both A and B.
  • D. Neither A or B.
Measure the depth of the torque converter into the transmission’s bell housing


Answer A is wrong. Measure the depth of the torque converter into the transmission's bell housing. Use this measurement to ensure that the converter is correctly aligned with the transmission oil pump when reinstalling.

Answer B is wrong. Minor nicks, scratches, and burrs can be removed from the hub using fine crocus cloth.

Answer C is correct. The slots in the torque converter's hub must fit onto the transmission's oil pump's lugs. Improper installation can damage the flexplate and oil pump.

Answer D is wrong. Both answers are correct.

5. After overhauling an automatic transmission, the input shaft is binding and has no endplay. Technician A says installing the transmission and driving the vehicle will correct this condition. Technician B says a thinner selective washer may be required. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B


Answer A is wrong. If the shaft is binding, disassemble the transmission to find out what's causing the bind.

Answer B is correct. The transmission should be checked. A thicker part or a part with a different step could be causing this problem. Placing a Torrington bearing or a tabbed thrust washer between two components in the wrong direction can affect the stack's height and input shaft endplay.

Answer C is wrong. Transaxles combine the transmission with the differential in the same case. Worn differential case bearings make a whining or rumbling sound that increases with vehicle speed.

Answer D is wrong. Manufacturers incorporate endplay into shafts for heat expansion to lubricate and to compensate for imperfections.