mindaugas

First time I have taken her on the highway since I got her. At nearly exactly 60mph the car begins to vibrate like I am rumble strips. The vibration is NOT in the wheel. It is the entire car. It eases up if I press down on the throttle and gets worse when I let off. Maybe drive shaft?

Js88lx

Harmonic balancer, driveshaft, somewhere in the driveline. Is it t5 or aode? If its a t5 will it do it lets say top of 3rd or 4th? Are your wheels and tires good?

mindaugas

Sorry, what is t5 or aode?
Tires and wheels are new, I experienced it just after I left the shop. I have never taken it on the highway though so I don't think it's anything they did.

95gtconvert

t5 is manual aode is auto

dawson1112

If its not making any vibrations at all while in neutral and revving the engine, then its not the Harmonic balancer.

Speed related vibrations are drive line related. I suspect you have a Ujoint that is bad/frozen up. That's what my 94 felt like at about 65 and the rear Ujoint was locked up on one of the sides.

mindaugas

Thanks, it's an Auto.

Are there any other symptoms for a bad ujoint?

95gtconvert

I know on trucks they sometimes squeak or they actually do seize up like dawson said

mindaugas

Really sounds like Ujoint, finding posts online with similar symptoms. Looks like it may not be that hard to replace.

http://www.allfordmustangs.com/forum...-symptoms.html

http://www.stangnet.com/mustang-foru...joints.433281/

blueboosted95

It's your torque converter shuttering. Go to advance get a tube of shutter fix forgot actual name put it in ur dipstick tube..

mindaugas

Wouldn't it go away though if it were that? This doesn't go away, just gets a little bit better if I give it some gas.