I have a 2005 ss/sc. At a stop light on my way home from work today my car did something odd. I began accelerating & at about 5000 rpm my engine kicked down as if it had hit the limiter. When I gave it gas it began chugging as if it was going to stall. When this happened, a message saying engine power reduced came on my information display. The engine then stalled while I was trying to accelerate. I was able to restart the engine while I was coasting, but it again was barely running & was shaking & chugging as if it was going to stall. I pulled over & idled for a few seconds then tried to take off again, it was still not right. I finally shut it off & looked under the hood & didn't see or smell anything out of the ordinary. After a couple minutes I started it back up & it ran fine except my engine light is on. I had to drive it home & will have to drive it to the dealer tomorrow. Does this sound familiar to anyone?

 

i had something sort of similar happen with the car dying, restarting and chugging, dying again, then running fine with CEL, but i never got the reduced engine power. i did get the fun of my tach not working, though. based on the parts that are the same, it could be an issue with the crank position sensor, but given that you didn't lose the tach and got the reduced power message, can't say for sure.

 

This has happened to a bunch of the ppl on here. I don't remember what the problem was though.

 

do u have an afrmarket radio b/c wehn i had mineput in they messed somehitng up and short my ecu so ur ecu ight be shot

 

No, I haven't done anything to the stock stereo system.

 

Yeah from what you said, and from what other people have been saying, it seems to me that you have a fried computer chip. Go to the dealer as soon as possible.

 

my 05 did that one time, at about 5000 mile mark. i had to shut off the car and wait for it to start back up cause it didnt want to restart. the dealer said it might have had a glich with the onstar system and the onboard computer system???? i said OK, WTF.. but they reset my onstar and i have never had the problem again. could be all bs from the dealer for all i know, but like i said, 27k miles later, never had it happen again!

 

Thanks guys, I hope the dealer finds what's wrong.

 

this has happened to me under hard acceleration. the same exact thing and the dealer ship wouldnt fix my car because because they blamed it on the intake. if you find what the problem is, let me know so i can tell my dealership.
-Brian

 

yea ur computer is deff fried mine took a week and a halfto get fixed and my wires for my air bags got fried

 

On a very cold morning (colder than 0 farenheit degrees), the same thing happened to me, reduced power mode also. The check engine light get on because of a P0606 code, a kind of problem with the PCM.

https://www.cobaltss.net/forums/problems-service-maintenance-69/dtc-p0606-control-module-internal-performance-12683/

 

that happend to my parents cobalt, in the middle of BFE Wyoming and it didnt clear itself out, lucky the next town only 5 miles away had a chevy dealer so they went in and chevy reset the comp and the car was fine but they drove home anyways and swaped it out for our ford escape just in case.

 

yes...we do have an onboard computer


it monitors fuel range and fuel milage and all that stuff

 

Actually, depending on your engine/trans and optional content a 2006 Cobalt can have up to 13 on-board computers all networked together. Almost anything electrical on a Coblat is operated by one of the computers.

HTH
WopOnTour