OK i have a 1987 Pontiac GTA 5.7l tpi. It wants to surge when either in town or out on highway going about 55-65. when i first bought the car it surged about 600 rpms, it has a new tps, new MAF, new plugs, new wires, fuel system cleaner added also have added tranny additive and now it only surges about 200 rpms and was placed on computer and its not showing anything. Also when i stop at a light it fells like its pulling, and when cruising aroun it like kicks when it surges. it is getting really annoying but i dont know what it is. What do u all think. there are no vaccum leaks either it ONLY does it from 1300-2000 rpms

Any help would be much appreciated as this is my only vehicle.

 

could it be the torque conveter or trannsmission

any info is useful

 

Bump

 

well i had the same problem it was a pick up coil in the distributor.might be your answer

 

anyone happen to know how to change these or how much they are

 

Does 12 bucks sound right through GMpartsdirect.com

 

yeah sounds right, you have to pull the dis, and take is part to put that thing in it , not excatly sure how to do it sorry

 

would this being bad make it surge at idle b/c mine ONLY does it from 1300-2000 rpms that all more or less it good

what about the egr could this be a problem can i disconnect it and not run it at all

But wouldnt it throw a code if egr was bad? NEED HELP

 

bump