Thread: Rough Idle
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Old 09-18-2013, 12:54 PM
Warlock III Warlock III is offline
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Check to make sure the spark plug wires are routed correctly. Then open the hood at night while it's running. Get a test light and ground it and then use the tip to trace each wire on both sides/thoroughly. If a wire is compromised you'll see a spark jump to the end of the probe.

If that doesn't return any results my next question would be when it idles low is there a sucking/vacuum leak kind of noise?

An intermittent low idle can be caused by a bad/going IAC or an upstream 02 sensor.

Last edited by Warlock III; 09-18-2013 at 12:57 PM.
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