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23 December, 03:32

Two technicians are discussing the IAT sensor. Technician A says that the IAT sensor is more important to the operation of the engine (higher authority) than the ECT sensor. Technician B says that the PCM will add fuel if the IAT indicates that the incoming air temperature is cold. Who is right?

A. Technician A

B. Technician B

C. Both Technician and Technician B

D. Neither A nor B

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Answers (1)
  1. 23 December, 03:51
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    Technician B

    Explanation:

    Two technicians are discussing the IAT sensor. Technician A says that the IAT sensor is more important to the operation of the engine (higher authority) than the ECT sensor. Technician B says that the PCM will add fuel if the IAT indicates that the incoming air temperature is cold. Who is right?

    ECT is the engine coolant temperature

    The Intake Air Temperature sensor (IAT) records the temperature of the air entering the engine. The engine computer (PCM) estimates air density so it can balance air air/fuel mixture. PCM will add fuel if the IAT indicates that the incoming air temperature is cold
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