08 Corvette sputters in CL, ok in OL
08 Corvette sputters in CL, ok in OL I have an 08 auto vette. Since I drove it off the dealers lot it has had a bad idle. I installed headers and now the sputtering or misfire has magnified where it's noticeable while driving in 5th and 6th gear light throttle. With any load at all it clears. I can program open loop and idle and part throttle is perfect. I've replaced both 02 sensors to no avail. Doesn't it have to be 02 sensor related? What am I missing?
Had it ran this bad before the headers I would have taken it back to the dealer. I read where the 08's typically idle bad so I dismissed the idea. Not the case.
Had it ran this bad before the headers I would have taken it back to the dealer. I read where the 08's typically idle bad so I dismissed the idea. Not the case.
TECH Enthusiast
Joined: May 2007
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to me it sounds like an oxygne sensor issue. If someone detialed the vehicle prior to delivery with a high silcone content product it could have poisned the o2 sensors.
I have an 08 auto vette. Since I drove it off the dealers lot it has had a bad idle. I installed headers and now the sputtering or misfire has magnified where it's noticeable while driving in 5th and 6th gear light throttle. With any load at all it clears. I can program open loop and idle and part throttle is perfect. I've replaced both 02 sensors to no avail. Doesn't it have to be 02 sensor related? What am I missing?
Had it ran this bad before the headers I would have taken it back to the dealer. I read where the 08's typically idle bad so I dismissed the idea. Not the case.
Had it ran this bad before the headers I would have taken it back to the dealer. I read where the 08's typically idle bad so I dismissed the idea. Not the case.
I would think an 02 sensor too but as I've metioned I've replaced both already. No detailing, washing or any prepping was done to the car at the dealer per my request.
Here are two logs I ran to verify the miss in my engine. The first is in OL looks good but does show a couple misfires. The second is CL. Mega misfires.
Working on getting them to upload....
Working on getting them to upload....
Last edited by Larry; Oct 25, 2007 at 05:00 PM.
