pro5.0stang

my car runs really ruff and shakes between 1200-1500 Rpm. 1500 and up it runs fine. then at 4000 rpm it shakes and runs ruff again. any help im thinking the TPS.

bmorrisj

check your motor mounts, also pull the spark plugs off the dist. cap one at a time to see if it changes the engine rpm at all....if one doesnt change the rpm you mave have a prob with that cylinder...like a bad injector or blown head gasket...

VertStangGT86

Pull the spark plugs off the distributor cap huh? JK, I'm sure he means spark plug wires.

bmorrisj

crap i meant wires... i need some coffee...

and check your balancer too

EmptyEvergreen

there could really be a lot of other things that this could be, could be the clutch or the flywheel, the previously mentioned are the most likely but have you replaced your flywheel recently also it could be you rearend but since its a ford thats unlikely