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C5 Rough Idle

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Old Apr 21, 2009 | 09:29 AM
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Default C5 Rough Idle

A while ago i noticed my car idles somewhat rough, not very bad, small enough that a passenger can barely feel it when sitting at a light. But to me its feelin like the world is rockin and i could feel it a mile away. (that bond between man and his corvette ) Anyways i have changed plugs and wires, and have run several bottles of fuel injector cleaner. (the wal-mart stuff) nothing has really worked yet. My car is a 02 with 70,000 miles. Any ideas or advice would be nice.
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Old Apr 21, 2009 | 10:07 AM
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Check out this thread:

http://forums.corvetteforum.com/c5-t...or-mounts.html
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Old Apr 21, 2009 | 11:05 AM
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My '99 never idled perfectly smooth. I was told early on that its due to the cam in the engine and so on, so it really never bothered me. My '07 does the same thing.
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Old Apr 21, 2009 | 11:12 AM
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Originally Posted by dgrant3830
My '99 never idled perfectly smooth. I was told early on that its due to the cam in the engine and so on, so it really never bothered me. My '07 does the same thing.


Mine shudders ever so slightly at idle. It just feels like a very very minor cam lope.

Now crank up my '76 and she'll show you what REAL cam lope feels like.
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Old Apr 21, 2009 | 11:34 AM
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Default thank you all

Thank you all for the info, il stop worrying about the shudder and will try to relax a bit about every squeak and groan with my baby
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Old Apr 21, 2009 | 11:48 AM
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Originally Posted by jonwymore
Thank you all for the info, il stop worrying about the shudder and will try to relax a bit about every squeak and groan with my baby
It is probably normal, but you may want to see if the MAF and throttle body are dirty.
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Old Apr 22, 2009 | 12:02 AM
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how can i do that? is it something i can do at home or do i need to take it in?
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Old Apr 22, 2009 | 01:02 AM
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Originally Posted by jonwymore
how can i do that? is it something i can do at home or do i need to take it in?
Its very easy, just 3 bolts to TB may be 10mm or 12mm, flat screw driver, a rag, electronics cleaner bottle, and thats it, u can easily do at home in ur driveway or garage.
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Old Apr 22, 2009 | 09:35 AM
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Originally Posted by sami85L98
Its very easy, just 3 bolts to TB may be 10mm or 12mm, flat screw driver, a rag, electronics cleaner bottle, and thats it, u can easily do at home in ur driveway or garage.


Its easy. You just have to be very careful with the MAF. There are thin wires that you don't want to break. Some people spray electrical contact cleaner on them, others carefully use a Q-tip to do it. Just be careful either way.
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Old Apr 22, 2009 | 04:15 PM
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you can buy an "MAF" cleaner at advance auto or auto zone. Just spray it on the MAF wires - DO NOT touch the wires .You can also spray your TB with it.
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