Question about 1994 Nissan Pickup

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Erractic idle Runs great - but idles from 2000, drops to 700 RPM and then back up to 1500 and then back down again then back up.

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Loping idle like this is most likely cause by an intake manifold or vacuum hose leak. Check your vacuum hoses for any cracks or disconnected hoses. If they are fine, then listen for air noise around your intake. A length of tubing can be helpful.

Posted on Oct 05, 2008

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