So i have a 91 rs and when ever i have it running and i rev it up when it in neutral it revs up fine but when it comes down it acts like its going to die and the lights in the car dim a bit and then it comes out of it and idles fine. I have no clue as to what is causeing this. Any help would be great (:

 

Have you checked the Alt? Battery Cables? Battery itself? Make sure the basics are checked and also same thing goes with codes.

 

Ya the alt is fine. Battery is a optima red top that i got about 3 months ago brand new. The wires are all fine with nothin cut or anything like that.