Exam 31: Fuel Injection System Diagnosis and Service

Which of the following should NOT be used to lubricate injector O-rings?

(Multiple Choice)

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Question 81

Cracks and tears in the plumbing between the ____________________ sensor and throttle body are potential air leak sources that can affect the air/fuel ratio.

(Short Answer)

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Question 82

Which of the following would not cause the fuel pressure to drop to zero immediately after engine shut down?

(Multiple Choice)

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Question 83

Technician A says the IAC counts should change when the A/C compressor is turned on and off. Technician B says if the scan tester indicates zero IAC counts, there may be an open circuit between the PCM and the IAC motor. Who is correct?

(Multiple Choice)

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Question 84

A fuel ____________________ is a solenoid-actuated fuel valve.

(Short Answer)

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Question 85

Technician A says the TPREL PID is the PCM's closed throttle reference voltage. Technician B says an idle trim relearn procedure should be done whenever a part of the IAC system is replaced or a repair is made to something that affects idle speed. Who is correct?

(Multiple Choice)

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(84)

Question 86

Showing 81 - 86 of 86

Exam 31: Fuel Injection System Diagnosis and Service

Which of the following should NOT be used to lubricate injector O-rings?

Cracks and tears in the plumbing between the ____________________ sensor and throttle body are potential air leak sources that can affect the air/fuel ratio.

Which of the following would not cause the fuel pressure to drop to zero immediately after engine shut down?

Technician A says the IAC counts should change when the A/C compressor is turned on and off. Technician B says if the scan tester indicates zero IAC counts, there may be an open circuit between the PCM and the IAC motor. Who is correct?

A fuel ____________________ is a solenoid-actuated fuel valve.

Technician A says the TPREL PID is the PCM's closed throttle reference voltage. Technician B says an idle trim relearn procedure should be done whenever a part of the IAC system is replaced or a repair is made to something that affects idle speed. Who is correct?

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