Vibration

[1999GT]

Ok guys..i think i may have asked this question here before becuase it has been a problem with my car for the lasy 1.5 years but i don't think i had any responses so i'll ask it again.


Between 800-1500 there is a slight vibration coming from the motor. While it is being reved up to 1500 you can feel it but you can feel it even more while the rpms are coming back down. When stopped and in N it is the most noticable. I've brought it to Ford and first they said it was my under drive pullies and i was liek WTF? Wouldn't the vibration get worse as it reved higher? So i took the pullies off. Then next they said it was my C&L. So i took that off and put the whole car basically back to stock so when i bring it in this time they won't have anything to B*tch about.

What do you guys think it could be? TPS sensor?

edit; nothing shows on fords ECU reader.

 

[xtrm281gt]

it probally couldn't hurt to give your intake manifold a nice once over if you haven't done so already

 

[94greenmile]

check you rharmonic balancer. I had the exact same problem and jacked my car up and the rubber seam of the balancer was separating causing vibration. I also changed my motor mounts because the were worn. I'd check the balancer. There is a slight seam where the rubber joins but it is like a slight opening.

 

[1999GT]

Thanks guys. I also forgot to mention teh first time i brought the car in to Ford they re flashed the ECU and the problem went away but came back about 2 months later.