it starts sruggling around 2500-4000 then u can see the tach like move like it was stuggling like a small back and forth motion, then u can feel start to pull again around 4000-4500 then starts to stuggle again i dont know what eles to do

i did tune ups,fuel filters, msd coil, removed the cat and still dont know whats going on no one seems to know wtf is going on

 

tpi? try the TPS. Sometimes they get gumed up and don't report to the computer right. Happened to me once. If there is a parts store close by, sometimes some parts stores and test them.

 

sorry yea its tpi and i noticed that when i wiggle the plug itself that goes in to the tps the eng idle changes or stumbles but whould that be casuein the prob? is that normal?

 

the connection must be tight and clean.. Also check the mass air flow sensor, that might also be giving you problems.

Most of the time the tps inside goes out. It doesn't read right.