ASE A8 Engine Performance Practice Test
51. A vehicle with an EFI engine frequently stalls while stopping and turning. Sometimes, it takes several tries to restart. Technician A says a loose connection at the crankshaft position sensor would result in this condition. Technician B says an open in the crankshaft position sensor circuit could be the cause. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
52. A vehicle has a fault code indicating a small evaporative emissions leak has been detected. Technician A says a small crack in the gas cap will result in this code. Technician B says this system contains a sensor that senses low tank pressure. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
53. A vehicle has poor acceleration. A vacuum gauge is connected to the engine's intake manifold. While steadily increasing the engine speed to 2500 RPM, the needle on the gauge drops slowly to 10 "hg. Which of these could be the cause?
- A. A clogged catalytic converter.
- B. Late valve timing.
- C. A faulty head gasket.
- D. Burned exhaust valve.
54. The sensor illustrated above is a:
- A. Thermistor
- B. Permanent Magnet
- C. Potentiometer
- D. Pressure Switch
55. Technician A says a (TPI) throttle position sensor is a potentiometer that indicates throttle angle. Technician B says an ohmmeter can test a throttle position sensor for resistance. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B