Vibration issues 02GT Auto

[rwood126]

I just got a 02 GT all stock with over 100k miles on it. I've had it only 3 days now....and notice a slight vibration up past 2k rpms.
I can put the car in park and rev the engine and feel it...so I know its not a driveshaft or rear end issue. Any help where to start would be great.

 

[Jhussey1280]

What kind of vibration? Does it shake the whole car? Is it constant? Does it get faster as the engine RPMs go up? Did you put the car in park, pop the hood and rev the engine to see if anything is wobbling or making a sound?

 

[rwood126]

It's slight vibration....and as the RPMs goes up the vibration stays steady till about 3k. Didn't notice any visable movement in the engine compartment. I drove it on the hwy yesterday for the first time since I got it....and noticed at 70 mph it's more noticable. But it's not a vibration that shakes the whole car....I just feel it in the seat.

 

[Jhussey1280]

Well I'm not too sure what it could be since it happens in park too. Possibly a crank shaft imbalance or the harmonic balancer has gone bad