95 cobra runs rough help

[seths99cobra]

hey guys got a bud who has a 95 cobra with basic bolt ons. problem is the car idles rough and when you rev the motor it dont do anything for a moment or two then it finally revs but busts up real bad and when you let off the accelerator it revs and thats when it busts up. he took the whole intake system off from the filter to the intake manifold to clean out carbon build up put new gaskets back on and now he has these problems. has no vaccum leaks we checked by spraying starter fluid over vaccum areas and the intake manifold to see if it ran different. he left the distributer on so we dont think its a timing problem. all hoses and plug are plugged in. so any inputs would be appreciated. thanks guys

 

[seths99cobra]

replaced the tps and the car still does run right it wont rev over 2100 rpm

 

[COBRA90GT]

Has he tried replacing the distributor or more specifically the PIP/stator ?

The symptom of not being able to rev past a certain RPM seems pretty similar to another tech thread where the solution wound up being a bad PIP/stator.

The PIP/stator seems to be a likely culprit - the individual part itself can be replaced or he could try a new distributor if he doesn't feel like tinkering with small parts.

I bookmarked this write-up (on sn95forums.com) that I saw someone else post in another thread:

How-To: Rebuild Your Distributor and Replace the Stator


Give that a try, g'luck.

 

[seths99cobra]

the dist is brand new that was put on a few weeks back and been running fine. but i will let him know and we'll check that. is the pip is it an electric part?