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My car vibrates excessively when idle. Specially when the rpms drop like when I turn on the AC. I have a SRI, HP race headers, high flow cat & magna flow cat-back. Can any of these mods be creating the problem? Can it be a balance isssue since the header weighs more than the stock manifold?

 
Rep Power: 376

I have the same mods as you do and i dont believe they would cause the problem unless they were installed wrong...take it to the dealership if all else fails...as for the balance issue...it shouldnt be an issue at all the header should be bolted down and wouldnt cause the vibs when idle...

 
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I have a SRI, DC header and pulleys. It also idles rough at times. It sometimes feels like it could stall.[IMG]i/expressions/face-icon-small-confused.gif[/IMG]

 
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hey, my car will somtimes vibrate at idle too...its kind of like a tremor for a second or too and then goes away, i think its the motor mounts

 
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I believe this is the A/C kicking in...but also check for a clogged air filter...you might want to try a fuel injector cleaner, depending on your accumulated mileage.

 
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i have injen sri and magnaflow catback... i have the same problem too and i only have 15k miles and just cleaned my air filter... still feels like it's going to stall at times.

 
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it could be the catback hitting your rear bumper. . . does it get louder when you turn on the a/c?

 
Rep Power: 351

your may have a broken motor mount. same things where happening to me on my last car. turned out rear right motor mount was broken

 

ok, my car doesn't vibrate while idling, but i noticed just the other day that my idle is high. i just got my 10k service done (i got 15k now) and it is idling at about 1000 rpms. what could be causing this, and how can i fix it?

 
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It may be the air/fuel ratio not mixing correctly. A friend of mine had the same problem in his civic and the apexi air/fuel controller solved that problem.

Then again it may be other htings also. *shrug*

 
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I have an AEM cai, pulleys, DC header, and cat back. I also had the same problem with a rough idle.
My car eventually stalled out every time I stopped at a light. I took my car to my mechanic and he raised the idle slightly and that solved the problem. I think it does have something to do with the air/fuel ratio. But after he raised the idle no more problems.

 
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mine is stock except for irridium plugs and AEM cai and I have the same problem when the air is on just happend last night for the first time. then again it is also the first time I hav used the AC since I got my car [IMG]i/expressions/face-icon-small-smile.gif[/IMG]