Help, my Civic is reving itself!
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Junior Member
Joined: Sep 2006
Posts: 4
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Help, my Civic is reving itself!
Apparently my Civic saw Fast and the Furious once too many times. At idle especially, and sometimes in drive and reverse, the car will sit there and REV itself by about 1000rpm. It seems to happen more once the car is warmed up. The car also seems to have a very high idle when it is first started. (About 3000) I have no idea what the problem could be. We recently completed a block swap and the car runs very well other than that, the only thing I thought it could be was maybe a vacuum line in the wrong spot or something. Does anyone have any ideas? Thanks
Junior Member
Joined: Feb 2006
Posts: 25
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From: San Antonio
check the iacv
If I were you I would probably check the idle air control valve(iacv) . When it goes bad you will have a surge in the engine at idle mostly when the car is first started. I have always bypassed it instead of replacing it and never had any problems but if you want to do it right replace it. Hopefully that is what you are experiencing.
Junior Member
Joined: Aug 2006
Posts: 21
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I had the same exact problem and it was a vacuum leak. It sounds exactly as you are describing it. I would check for the vacuum leak before you start buying iacv's like no tomm. like i did. It'll be a waste of money. Atleast with checking the vacuum leak you will eliminate one of the options without spending money.