Ok so i dont have a mustang but i have a 1987 pontaic trans am GTA, i have a surge problem while im driving or setting stopped in gear it does not do it in park or neutral. It surges about 300 rpm and its driving me crazy. I have changed plugs put diff gas in it, it has new MAF and new tps oww sryy car is 350 tpi with 700r4 tranny!!! What do u guys think the problem is dirty injectors, 02 sensors, plug wires, tranny goin bad idk what do u all think.


HELP ME PLZ

 

I think you will get the answer your looking for on a trans am forum.

 

have a gm tech install tech 1 on to check for codes in the ecm