Cold start misfires. I think this is more serious than I thought! - Page 14 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

10-12-2012, 10:39 AM

#183

WxGawd

Drives: 2010 LS Camaro w/RS Victory Red

Join Date: Nov 2009

Location: Springfield, VA

Posts: 24

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Quote:

Originally Posted by Mach

Bemore.. I got a CEL during a cold start last winter. It was a misfire CEL and it was really cold. The engine at the time didn't have a tune. I took it the dealer and they updated the computer to run at a higher rpm during choke to prevent misfires. Good since then. There is a TSB for this.

I know your situation is different but maybe raising the rpm during choke mode may fix your problem.

@Mach: Same thing happened to me this week. Mine is at the service department today having the ECM re-flashed per the TSB.

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