so when the a/c is on and i put the car in neutral the rpms drop to about 4-500 then bounce back up to about 1500 and back to idle... why is it doing this? it only does it when the a/c is on... anyone else havin this problem?

 

yeah me too same exact problem. I havent taken it in yet cuz i have no time but im sure its a simple fix.

 

A/C compressor and clutch assembly.


Just my first guess.. and it wont be too cheap. kindof odd on a newer car though.

 

anyone ever find a solution to this?

 

i was actually thinking about making a thread about this a few days ago, mine does this too. earlier this week we had days of 96-100, windows down wasn't cutting it. It feels so weird, it does make me actually stop at stop signs so i can wait for the idle to come back up though.

edit: jesus i didnt realize how old this thread was

 

im thinking the a/c compressor but not sure...here's to a long summer!!

 

It's compensating for the load u put on it ( turning the a/c on )

It's compensating for the load u put on it ( turning the a/c on )

 

the extra pressure put on the engine, while trying to keep the a/c going, it happens to me to might be with all cobalts

 

mine does this all the time too!!! even stalls sometimes.....

 

clean the throttle body fixes this problem completely.