Exam 43: Automatic Transmission and Transaxle Service

If the noise is engine speed related and is present in all gears including Park and Neutral, the most probable source is ______.

Slippage during shifting may indicate that a band needs adjustment.

Dark particles in the transmission fluid are an indication of ______.

Technician A says delayed shifts may be caused by leaking hydraulic circuits. Technician B says poor engine performance can cause delayed shifts. Who is correct?

During a road test, the engine's speed flares up during acceleration in drive. What is the most likely cause of the problem?

Technician A says the only positive way to identify the exact design of the transmission is by the shape of its oil pan. Technician B says identification numbers only identify the manufacturer and assembly date of the transmission. Who is correct?

An engine vacuum leak can cause degraded shift quality.

Air pressure tests are performed during disassembly to locate leaking seals and during reassembly to check the operation of the clutches and servos.

Technician A says the transmission identification number is found on a sticker or stamped on the transmission case. Technician B says the vehicle certification label gives transmission information in a space marked TR. Who is correct?

On all automatic transmissions, the fluid level is always checked with the engine running and the transmission in park.

What does milky-colored ATF indicate?

Dexron III transmission fluid can be used in all automatic transmissions.

When using compressed air to clear a cooler line circuit of old fluid, debris, or solvent, avoid using air pressure higher than ____________________ psi ____________________ kg/cm²).

On a road test, a thumping noise is heard in the transmission whenever the vehicle is accelerated. What could be the problem?

Technician A says driveline vibration that changes with engine speed can be caused by an unbalanced torque converter. Technician B says driveline vibration that changes with road speed can be caused by a bad universal joint. Who is correct?

Technician A checks transmission mounts with a pry bar, pulling up and pushing down on the transaxle case while watching the mount. Technician B checks the mounts by putting the Transmission into a forward gear and gradually increasing the engine speed to about 1,500 to 2,000 rpm while an assistant observes the torque reaction of the engine on its mounts. Who is correct?

How is the transmission fluid level checked on a transmission that doesn't have a dipstick?

During a stall test, the engine speed was 50 rpm below the minimum stall speed. What is the most likely problem?

What is the most probable cause of low fluid levels?

Most transmission shops rebuild the torque converter when overhauling the transmission.