ASE Practice Test #2

Question 1

With an electronically controlled 4-speed automatic transaxle, you feel a “shock” while changing from Neutral to Drive. Which of these needs to be fixed away from the vehicle?

Accepted Answer

Forward clutch

Answer

A "shock" or harsh engagement when shifting from Neutral to Drive often indicates an issue with the forward clutch, which is responsible for engaging the drive gears. Problems with the forward clutch typically require transmission disassembly and removal from the vehicle for proper inspection, repair, or replacement.

Question 2

You are looking for an air leak inside the cylinder when you run an engine compression test. With the exception of which of the following, you will discover air leaks with this test?

Accepted Answer

PCV valve

Answer

An engine compression test measures the sealing integrity of the combustion chamber, identifying leaks past the piston rings, cylinder head gasket, or intake/exhaust valves. The PCV (Positive Crankcase Ventilation) valve is external to the combustion chamber and its function does not directly impact cylinder compression, so a leak there would not be detected by this test.

Question 3

What three clutch pedal measures are crucial?

Accepted Answer

Pedal height, reserve and free play

Answer

Proper clutch operation depends on these three critical adjustments. Pedal height ensures comfortable and full engagement/disengagement. Free play (or slack) prevents premature clutch wear by ensuring the release bearing isn't constantly pressing on the pressure plate. Reserve (or clearance) ensures the clutch fully disengages when the pedal is pressed, preventing gear grinding.

Question 4

You want to identify a RWD, electronically controlled, 5-speed automatic transmission that makes an odd noise when in drive using your diagnostic symptom chart. Technician A needs to perform an OFF-vehicle procedure because he thinks the oil pump component may be to blame. It is the control valve, according to Technician B, and it requires an OFF-vehicle procedure. Who is accurate?

Accepted Answer

Technician A

Answer

An odd noise specifically when the transmission is in drive often points to internal mechanical components. The oil pump is a critical mechanical component that operates continuously in drive and can produce noise if failing, requiring transmission removal (OFF-vehicle) for repair. While the control valve is also internal, it's less likely to be the direct source of a *noise* in drive compared to a failing pump.

Question 5

When a customer enters, they complain that the exhaust is spewing white smoke. Which system should you examine first for low fluid levels?

Accepted Answer

Cooling System

Answer

White smoke from the exhaust typically indicates that coolant is being burned in the combustion chambers. This usually points to a head gasket leak or a cracked cylinder head/block, allowing coolant to enter the engine. Therefore, the cooling system should be the first system checked for low fluid levels, as this is the most common cause.