Join Date: Jan 2009
Location: Burkeville/Farmville VA
2008 Cobalt LS 4dr "Chuggling" problem
Hey guys I went to the dealer on this and they couldn't figure it out. Between 35 and 48MPH on deceleration only, not braking but just foot off of the accelerator and coasting, my car will feel like it's kicking down a gear for about 4 seconds. The transmission stays in the same gear, but the RPMs plummit and the Instant MPG will go from 30-45 up to 99. To me it feels like the ECM is shutting off the fuel injection completely, causing engine braking. I'm not sure on this though. I doubt it is a serious problem, as there is no CEL or even a minor code being stored in the computer. However, it is an annoyance. the car has roughly 16,000 on it and has done it since new. Dealer can't find a "problem." Any ideas? BTW I have the 4spd auto tranny.
Last edited by vpr5703; 01-16-2009 at 01:45 PM.
Reason: Forgot transmission. Minor detail!