car stalling on highway or idling , at stops..etc. on Chevrolet Cobalt

Average mileage: 100,781 (50,045–157,000)
Engine affected: 2.5L 4 Cylinder
6 model years affected: 2005, 2006, 2007, 2008, more2009, 2010
30 people reported this problem
19 people shared problem details
My car keeps shutting off every time I come to a stop or when idling and sometimes when I'm slowing the car to turn a corner. I hate it! Its really scary! Now I have to take it to a shop because I know nothing about cars and with all the different opinions I've been getting from everyone, I just don't know what the heck to think. Big bummer that's 4 sure.
2006 Chevrolet Cobalt134,000
My cobalt runs great until you stop are slow down to almost a stop. It start trembling and pulsating sometimes it shut off. I changed the gas cap it did't solve the problem
2007 Chevrolet Cobalt130,000
At a idol it starts at 1000 then bounces back down to around 500-400, it does that four a few seconds then dies. Also at a complete stop or when I start to come to a complete start it dies.
The speedometer fluctuates erratically when driving or idling. One time while idling, the speedometer went to 110 miles per hour and then back to 30 then it stalled out, the car was not moving. When on the highway the speedometer acts erratically and the car keeps jerking. I don't feel it is safe to drive. I have taken it to the dealer but they replaced the ignition for the second time and the car is still doing the same thing. They say they don't know what is really wrong with it, but I have read other reviews that states similar problems. I just paid my last payment on it today after five long years I bought this car brand new and I have tried to take good care of it. I am not happy right now.
Engine Stalls while idling at a Stop sign.
2006 Chevrolet Cobalt151,000
Every time i come to a light it idles and most of the time it shuts down...
2008 Chevrolet Cobalt117,000
My car is constantly shutting off when u pull up to a stop sign or just simply idling. I have replaced the throttle body and the wiring to it and followed by several sensors such as air flow crank idol control ect I don't remember then all plus it's been at the shop 4 different times. I'm clueless to what it could be any help would be appreciated
2005 Chevrolet Cobalt109,000
Car stalls when the clutch is engaged while stopping when it cold outside has been happening for over two years. In December 2013 had the whole pedal with sensor and throttle body with sensor replaced. This fixed the problem until November 2014. The stalling started again and it's also gone into reduced engine power mode.
Car idle varies sometimes shuts off. Ignition switch is in run position.
My engine light comes on give a mesage engine power reduce have it at the dealer and they have not found what the problem is almost 2 weeks please help
2006 Chevrolet Cobalt100,000
Car wont start after getting gas car was running fine and then wont start keeps bogging down really hard
2010 Chevrolet Cobalt- 2.5L 4 Cylinder106,000
Car stalls at stops. Took to shop. They couldn't replicate problem. No fix.
I too had a problem with my Cobalt stalling, someone told me to check gas cap and replace..I stop the STALLING!!..yee haw! problem down..
Car dies when I slow down or make a complete stop. I slowed down to let a guy turn and car dies. Occasionally all my lights on my dash lights up and work erratically, car jerks, sometimes no power steering, but other days it runs perfect. Other then the car dying of course. Does anyone know why?
My car shuts off all the time and keeps doing it after I try to turn it on!
Came to a stop light and it just shut off on me as the light turned green and I went to go it just turned off. Then at stop signs it's does the same thing.
2005 Chevrolet Cobalt124,620
When I stop at a stop sign my car cuts off and when I'm on the highway in traffic it cuts off
poo10 failed emission test
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