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Car idle revs

2000 honda civic revs up and down during idle.

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If the check engine light is on, take the car to an autoparts store and have them use a scan tool to retrieve any fault codes stored in the computer. Most parts stores will perform the scan at no charge. Getting the codes will go a long way toward identifying what the problem is. I would look at a faulty idle air control valve, but getting the codes should end the speculation. Hope this helped and best wishes.

Posted on Aug 01, 2009

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Make sure you are full of coolant. Surgin on hondas is usually that issue.Also VTECH works on OIL PRESSURE. make sure you have correct oil in car.

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if its running rich and the idling is up and down suspect your oxygen sensors and sort as soon as otherwise it will destroy you catalistic converter [very expensive] yates210456

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