Anybody know why my 95 GT sporadically vibrates at 1000 rpms? It doesnt do it all of the time, but most of the time, and only at 1k rpms. I've changed plugs and wires, fuel filter, air filter.
Sounds like your harmonic balancer is going bad. Check to see if the rubber is poking out on either side. Do a search and you will see this is a common thinng on our cars.
I upgraded to a Pioneer pn 872030 which is sfi approved and needs no spacer when mine went bad.
If you use a stocker or another cheap replacement you will just have to replace it again. I've seen some on this board say they went through two or three of them trying to save money before moving up to a quality balancer.