Rough Idle and Rough Stops

Hello

I'm having some problems with an 09 Cobalt LT

After the car has been running and is up to temp, when I restart the car it tends to have a rough idle...it seems to have a misfire but the tach isnt jumping....once the car is in gear it seems to smooth out

Also when coming to a stop, it acts like it wants to stall but so far has not

any ideas what could be the cause? I have done the regular maintenance

Car is a 09 Cobalt LT Automatic with 108,000 miles...its daily driven mostly highway miles

Thanks

Clean the throttle body.

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Quick question

is the throttle body located off the air filter box or at the front of the motor?

Thanks '

Trussell said:

Quick question

is the throttle body located off the air filter box or at the front of the motor?

Thanks '

Click to expand...

throttle body is sitting on top of the intake manifold and underneath the intake system.