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Black smoke when cold ,and lopes for about 1 min ,is this the IAC?

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IAC-Idle Air Control Solenoid

That only controls the idle rpm as the name implies

Posted on Dec 09, 2014

  • Dave Powers
    Dave Powers Dec 09, 2014

    Could this cause this problem if not working correctly?

  • Anonymous Dec 09, 2014

    Not the black smoke issue ALL parts of any vehicle have to be working properly all the time

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Posted on Jan 02, 2017

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SOURCE: What exactly is the iac valve? It sounds like

The Idle Air Control valve is what monitors your idle air/fuel mixture. It is is not functioning at normal parameters, then the car will not idle properly. It sounds like your supercharger my have a faulty bearing and may need to be repaired. Your idle issues may be linked to the IAC but it could also be your throttle control sensor. Another problem is the throttle plate shaft will wear on the housing and cause a vaccuum leak causing the air/fuel mixture to be lean. Do you have any trouble codes? If so, have these codes read and it will narrow down the problem.
Hope this helps.

Posted on Jun 19, 2010

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The Idle Air Control valve is what monitors your idle air/fuel mixture. It is is not functioning at normal parameters, then the car will not idle properly. It sounds like your supercharger my have a faulty bearing and may need to be repaired. Your idle issues may be linked to the IAC but it could also be your throttle control sensor. Another problem is the throttle plate shaft will wear on the housing and cause a vaccuum leak causing the air/fuel mixture to be lean. Do you have any trouble codes? If so, have these codes read and it will narrow down the problem.
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