What's up guys I got a 91 trans am with a 350 tpi. I barely bought the car. I didn't know if the ac worked so I charged it and it worked perfect. But after I charged it I noticed my idle jumped up for some reason it idles close to 1200 rpms with the ac on or off. Before that it ran great and idled great. I checked the codes all I got was a code 33. Any ideas would be awesome Thanks.

 

You probably moved or busted a vacuum line. Otherwise....http://chevythunder.com/map_code_33.htm

 

I didn't really touch anything when I charged it. It just all of a sudden went up in idle and never came back down. If I drive it slow it sputters and at a stop it wants to go by itself.

 

Ok fine. Look for vacuum leaks.

 

Thanks that's what's next on my list to do it was super random and it shifts hard too. Thanks though

 

That all sounds like a vacuum leak still. As brittle as those plastic vacuum get and the nature of the older ecm's, it normally is super random. Especially when you only charged ac.

 

Yes I know. I will buy some carb spray and spray around the lines see if something pops out. If it was the tps I'm guessing I would get a code or something for that