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Rough idle

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Old Jun 30, 2009 | 10:01 AM
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Default Rough idle

New member/owner saying hi. I have a few items on my newish vette.
1. Roof rattle. The previous owner cracked a small chip in the targa and the dealer I bought it from sent a replacment, so I will be getting these done a the same time.

2.Popping in the rear while turning. I will get them to do the TSB while at the dealership

3. Rough idle. It is a very "sharp" lope almost a pop. It will do it all the time at idle hot or cold. Is this normal? My ls1 z28 had a small factory lope but it wasn't as sharp as my vette. No check engine light.

Sorry if this has been asked a million time.

2008 with z51, 1LT, A6, targa top, 20k miles, 93 octane
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Old Jun 30, 2009 | 10:05 AM
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St. Jude Donor '21-'22-'23-'24
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3. A very sharp lope is not normal. Mine has a very slight vibration at idle.
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Old Jun 30, 2009 | 10:30 AM
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Originally Posted by JimTN
3. A very sharp lope is not normal. Mine has a very slight vibration at idle.
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Old Jun 30, 2009 | 11:58 AM
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My 09 has a very sharp lope on cold start but evens out in about 30 seconds. Is this normal?
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Old Jun 30, 2009 | 02:01 PM
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Is it possible that the previous owner added some extra parts? Maybe a cam?
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