Which of the following would NOT cause the fuel trim to be out of range?

Question

Quizplus · Accepted Answer

The fuel trim refers to the adjustments the engine control unit (ECU) makes to the fuel mixture (rich or lean). A faulty IAC motor primarily affects the engine's idle speed and does not directly influence the fuel trim adjustments. In contrast, a faulty fuel pressure regulator, restricted fuel filter, and faulty MAF sensor can all lead to incorrect fuel mixture adjustments, thereby affecting the fuel trim.

Which of the Following Would NOT Cause the Fuel Trim