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pahrona44 3/4/2013
2004 Nissan Frontier XE 6 Cyl 3.3L - Engine
engine at idle spikes up to 2000 rpms for 2 or 3 seconds and drops back down
1 Answer
  • CVO
    CVO 3/4/2013
    Idle air control valve, check it and clean it.

    The Idle Air Control (IAC) valve controls the engine idle speed and dash-pot functions. The valve is located on the side of the throttle body. This valve allows the necessary amount of air, as determined by the Powertrain Control Module (PCM) and controlled by a duty cycle signal, to bypass the throttle plate in order to maintain the proper idle speed.


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