well guys the problem is that my lady got her self a 89 dx ef already converted to mpfi with a d15b non vtec. But the car has a problem its seems like its a tps problem or an injector cuz the car runs fine and idles fine but it jerks between 1500 n 3000 rpms any help or info plz guy said it ran fine but threw a skunk2 manifold n it started to do it

 

Doesn't the skunk2 manifold eliminate one of the sensors? I'm not sure but I thought I remembered reading about it.. Might be a place to check or your iacv

 

aight and for the ppl to say the mounts or clutch the clutch is fine and so are the mounts it just does that at certain rpms one pass 3500 it rund smooth n strong also i have to take of at 3500 just so that it wont jerk =/

 

it doesnt bro i unpluged the tps n it reved up nicely but it misfired at 2000 rpms n would rev up

 

o2 sensor fixed my jerking problem

try switching out the tps and bang ur firewall out so it doesnt hit it

 

http://www.youtube.com/watch?v=eUGyAHSQhpo

 

agreed on the iacv. disconnecting it on mine causes the car to 'jerk' from around 1500-2000.