I own a 90 GTUs. And sometimes when it gets to its optimum temperature the idle will drop down. Now sometimes it idles just fine at around 700 rpms, but sometimes it drops down to 500 and sometime stalls... I'm thinkin TPS but does anyone else have any suggestions. Also sometimes I'll be driving and it feels like i lose power, I mean no acceleration for a brief second, then it comes back. Anyone know what that might be either?

 

not to steal ur thread but it happens to me too...
i own an 87 turbo
and im tryin to figure it out
if i get anything ill let u kno

 

naw its cool, I just want to know what I have to replace. I work for a carparts store, so if its a matter of a TPS sensor I can get it for $110. Anyways can you all please help?

 

check you BAC.