ASE Auto Maintenance & Light Repair 3

Question 1

A technician is checking a serpentine belt and finds cracks on the ribbed side spaced about every quarter inch. What does this indicate?

Accepted Answer

Normal belt wear requiring replacement

Answer

Multiple cracks across the ribs indicate aged belt material that should be replaced.

Question 2

When replacing an engine air filter, in which direction should airflow move relative to the filter media markings?

Accepted Answer

From the dirty side toward the clean side as marked

Answer

Filters are directional, drawing air from the dirty intake side through to the clean engine side.

Question 3

A coolant test reveals the mixture freezes at only -10°F instead of the desired -34°F. The best correction is to:

Accepted Answer

Adjust the antifreeze-to-water ratio toward 50/50

Answer

Raising the antifreeze concentration toward a 50/50 mix lowers the freeze point appropriately.

Question 4

What is the primary purpose of the PCV (Positive Crankcase Ventilation) valve?

Accepted Answer

To route crankcase blow-by gases back into the intake to be burned

Answer

The PCV valve recirculates crankcase vapors into the intake, reducing emissions and pressure buildup.

Question 5

A wiper blade leaves streaks and chatters across the windshield. The first and least expensive corrective action is to:

Accepted Answer

Clean the blade and windshield, then replace the rubber element if needed

Answer

Cleaning the blade and glass, then replacing the worn element, addresses streaking before costlier repairs.

ASE Practice Test