ASE A8 PRACTICE TEST - ASE A8 ENGINE PERFORMANCE TEST PREP - TEST 1 QUESTIONS & ANSWERS.

ASE A8 PRACTICE TEST - ASE A8 ENGINE
PERFORMANCE TEST PREP - TEST 1 QUESTIONS &
ANSWERS.




Technician A says the PCM will advance the engine's ignition timing when it
receives a voltage signal from the knock sensor. Technician B says this sensor
sends an AC signal to the PCM when it detects ping or denotation. Who is
correct?
A. Technician A
B. Technician B
C. Both A and B
D. Neither A nor B Answer - Technician B


The waveforms below are compared to diagnose catalytic converter efficiency.
Technician A says Bank 1 Sensor 2 is faulty because the two waveforms should
have similar voltage peaks and fluctuations. Technician B says Bank 1 Sensor 2
monitors the catalytic converter's ability to reduce pollutants in the exhaust
stream. Who is correct?
A. Technician A
B. Technician B
C. Both A and B
D. Neither A nor B Answer - Technician B


An engine with variable valve timing has a rough idle but runs smoothly at
higher engine speeds. Technician A says to check the variable valve timing