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Question: 2009 Corvette Idle Issues

Runner1954

New member
Joined
Dec 11, 2016
Messages
3
Location
Duarte, Ca 91010
Corvette
2009 Corvette
I have a 2009 corvette base model. I have 49,000 miles on the vehicle. All vehicle maintenance services complete. At 47,000 miles I took it in for an oil change and to check a rough idle issue. I've changed spark plugs, coil and wires. Completed the engine flush to clean values, etc. Completed the fuel tank flush. Replaced MAF sensor. Compression is fine. The vehicle was put on the computer, no codes. Gas mileage good. Changed fuel to Chevron and added additives with no luck. The idle is better when its cold. Warm sometimes it good and sometimes the RPM needle bounces with a very rough idle. I contacted GM and they say its a characteristic of that vehicle. From 0 to 47,000 miles it was fine. Any ideals?
 

Toms007

Moderator
Joined
Sep 24, 2004
Messages
6,489
Location
Southwest Kansas
Corvette
2007 Atomic Orange Coupe
First off, I see this is your first post, so I want to welcome you to CAC. :w We have many great troubleshooters who can help you with your issue. I'm keeping an eye out on this thread as this is just about where my 007 is, mileage-wise, although I am not experiencing this issue, with it, it sounds a little like what my 09 Silverado is experiencing. :thumb
 

bill81vette

Moderator
Joined
Jan 17, 2004
Messages
4,321
Location
Troy,NY
Corvette
1981 dark blue metallic
Welcome to CAC!!!!
enjoy!!!
 

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