Question about 2002 Hyundai Santa Fe
I faulty Idle Air Control valve (IAC) can cause these specific symptoms. You could try diconnecting the IAC valve (usually near the throttle body) and regulating the idle yourself. If the fluctuations go away and you are able to hold a constant idle position with the gas pedal (if vehicle will start), the IAC is the problem.
Posted on Jan 07, 2010
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Posted on Jan 02, 2017
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