Could be a lot of things. Does it run at all? If it won't actually start, might be the fuel pump. Turn the key to the run position without trying to start it. You should be able to hear the pump running for a couple of seconds. If you can hear it its fine, if not then do some more trouble shooting in that direction. If it runs but won't accelerate, have the codes read to find out what the computer is telling you.
06 cobalt won't stay on, turns over then when I try to rev it, nothing happens
2006 Chevrolet Cobalt LS Sedan FWD
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Maintenance & Repair
I have a 07 Cobalt with a 2.2 I pulled the motor out and put in a 06 2.2 and now it only cranks dose not start I did notice that the 06 dose not have a can seansor but the 07 dose is there somethin...
2007 Chevrolet Cobalt
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Maintenance & Repair
07 cobalt LS 2.2 overheats, replaced thermostat , radiator ( twice) drilled 2 holes in thermostat, replaced head gasket ( coolant in oil , which is when all this started ) I had a 50/50 ( yea right...
2007 Chevrolet Cobalt LS Coupe FWD
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Maintenance & Repair
I have a 2009 chevy cobalt lt 2.2 litre engine. It has many mods that were not done by me, I'm the second owner. It has 105000km. It has a supercharger, coolant for the supercharger, some gauges tha...
2009 Chevrolet Cobalt LT Team Canada Edition Coupe FWD
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Maintenance & Repair
2006 cobalt 2.2 The fan stays on even when car is off, removed fan 2 relay to turn it off replaced relay same problems. The car doesnt get hot enough to require fan to be on. I let it set over night...
2006 Chevrolet Cobalt LS Coupe FWD
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Maintenance & Repair
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