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Ruff engine at idle

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Old Mar 4, 2003 | 10:48 PM
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From: Bayville NJ
Default Ruff engine at idle

Took the vette out to work today for the first time.. noticed while at idle, the whole car seems to shake.. It may be that I am not used to it, Is this normal? :confused:
:steering:
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Old Mar 4, 2003 | 10:57 PM
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Default Re: Ruff engine at idle (P626808)

my car did the same thing until i got the blackwing intake, and everyone suggested to do a idle relearn. now it idle's nice. go to search and look up idle relearn. it is a simple procedure. :jester
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Old Mar 4, 2003 | 11:05 PM
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Default Re: Ruff engine at idle (Muff)

my car did the same thing until i got the blackwing intake, and everyone suggested to do a idle relearn. now it idle's nice. go to search and look up idle relearn. it is a simple procedure. :jester
I have not done any mods? will this still help? :confused:
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Old Mar 4, 2003 | 11:07 PM
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Default Re: Ruff engine at idle (P626808)

A stock C5 has a light shake. If it's a rumble, have it checked.
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Old Mar 5, 2003 | 10:41 AM
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From: Freestate Corvette Club! Elkridge, MD
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Default Re: Ruff engine at idle (P626808)

My 2003 MN 6 has a slight lump in the idle too - it runs perfect, just a tad rough in the idle. It seems normal after, I test drove another '03 at a dealership, it had the same idle as mine. If it is really bad, like car shaking bad, I have read that a plug may be to blame.
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Old Mar 5, 2003 | 10:46 AM
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Default Re: Ruff engine at idle (P626808)

:iagree:
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Old Mar 5, 2003 | 11:20 AM
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Default Re: Ruff engine at idle (P626808)

Plugs, wires or coils could be bad. Take it to the dealership and let them check it over. If they dont find anything wrong, Replace the plugs and wires yourself. THen take a timing light and hook it up to each plug wire and see if each coil is working like it should. The way you do that is to watch the strobe and see if you have a steady spark. If the spark is eratic then you know that coil is bad. I had this problem on my car for 3 years and we finally found it using this technique.

It is best to find the problem now, if you start modding the car and take it to the dealership, they will only blame the mods for the problem.

vetterdstr :cheers:
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Old Mar 5, 2003 | 09:36 PM
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Default Re: Ruff engine at idle (P626808)

Mine all of a sudden got rough as well. It turned out to be a vacuum hose connection came loose. Check to see if you threw a code. Turn the key to ON and push the fuel button four times while holding the options button down. This will cause the computer to do a diagnostic check that shows in the DIC. If you throw any code numbers write them down and post on the Forum. Someone will then likely be able to post the service manual info for your particular code(s).

It may be something you can check for yourself. If not, at least you'll have a clue as to what is wrong.

:yesnod: :cheers: :lol:
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