ASE L1 - Advanced Engine Performance Specialist Vehicle Practice Questions
The free ASE L1 - Advanced Engine Performance Specialist questions that deal with vehicle, with answers and explanations. The full bank and the timed practice test cover every topic the exam asks about.
Question #3
A customer reports that their vehicle stalls intermittently. Upon scanning, a P0340 code appears. What is the most likely cause?
Correct answer: C
Explanation
A P0340 code indicates a malfunction with the camshaft position sensor, which can cause stalling.
Question #5
After a tune-up, a vehicle has a noticeable decrease in fuel economy. What is the likely cause?
Correct answer: B
Explanation
If spark plugs are misfiring, it can lead to inefficient combustion and thus decrease fuel economy.
Question #6
A scanner shows a P0171 code while performing a diagnostic on a vehicle. What does this code indicate?
Correct answer: D
Explanation
A P0171 code indicates a lean condition, meaning there is too much air and not enough fuel in the combustion chamber.
Question #10
A customer's vehicle vibrates excessively at idle but smooths out when driving. What could be the likely cause?
Correct answer: C
Explanation
Worn or damaged engine mounts can allow excessive movement of the engine at idle, causing vibration.
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