Vibrating

Venom351R · Jun 24, 2012

When its a U joint issue it will usually vibrate at specific RPM such as from 2,500-4,000 for example and anytime out of that range it will smooth out. So what I'm asking is does it do it at a specific RPM range? If so then its probably your U joints. Thats exaxctly the symptoms mine had when the U joints whent bad on my 95 GT. Was the perfect time to upgrade to an Aluminum DS

Nacho_SC · Jun 24, 2012

U-joints, center bearing(if its a 2 piece ds) maybe a stretch but how's the wear on your tires?

miss2slocoupe · Jun 24, 2012

no it does it when it pleases, i did try to see if there was a patteren. But i will say this again and see if when one see what i am say... WHY DOES IT ONLY DO IT WHEN IM ON THE GAS PEDEL?

Nacho_SC · Jun 24, 2012

Ok it vibrates under a load at hwy speeds correct? How long has it been since you've rotated and balanced your tires? Reason I say is because besides everything else stated sounds like you just need to rotate and balance your wheels miss.

Hope that helps.

JLG21611 · Jun 28, 2012

I just had this issue with mine... I had two issues...
Had a harmonic balancer that was starting to separate and after I installed a SFI that wont do that again, I noticed that around 60 mph i had a vibration while on the gas in the 60 mph range. Ran it up to 110 mph and it was HORRIBLE.... Then the vibration moved after a few days... it became a decelaration vibration only... and it didnt go away with clutch engaged or not so i knew it wasnt a throw out bearing....

Then I did the smart thing and jacked up the back end to check out my u-joints... yeah they were bad and I changed them out. Took about an hour and now we are back to smooth cruising... cheap and easy fix!

Hope this helps honey!!!

miss2slocoupe · Jun 28, 2012

Thank you! the vibration is getting worse, It does it at any speed now but it gets worse at faster speeds. And now it does it when/off the gas

JLG21611 · Jun 28, 2012

Then Im pretty damn sure its U-joints shug.... get em checked before the driveshaft comes out....

miss2slocoupe · Jun 28, 2012

JLG21611 said:
Then Im pretty damn sure its U-joints shug.... get em checked before the driveshaft comes out....

i will when i find a jack first.. LOL i hope its this, i was think it was the transmission at first but it shifts great and no problems with it, then i thought it was the rearend... i dont know, gotta figure it out soon though

RonBurgandy · Jun 28, 2012

im gettin the same thing after replacing my pilot and throw out bearing. around 65mph + it feels like the car is shaking apart. alot of vibration in the shifter and clutch pedal. i need to jack mine up and check the drive shaft.

miss2slocoupe · Jun 28, 2012

RonBurgandy said:
im gettin the same thing after replacing my pilot and throw out bearing. around 65mph + it feels like the car is shaking apart. alot of vibration in the shifter and clutch pedal. i need to jack mine up and check the drive shaft.

if it was the throw out bearing it would make alot of chattering

MustangChris · Jun 28, 2012

*insert dildo joke here*

seriously get your driveshaft checked, wheels balanced, and ensure lug nuts are tight.

miss2slocoupe · Jun 28, 2012

already checked lugs

MustangChris · Jun 28, 2012

pull your shaft (bow chika wow wow) and have it balanced. one of the counterbalance weights may have fallen off.

miss2slocoupe · Jun 28, 2012

MustangChris said:
pull your shaft (bow chika wow wow) and have it balanced. one of the counterbalance weights may have fallen off.

how bad would it vibrate though if it was off? I mean this shit is bad

MustangChris · Jun 28, 2012

bad.

it spins at a gajillion RMPs. if its a few ounces off that gets amplified. Look at how small the weights on your wheels are, same concept. that small of an off-set can make a difference ....

CC'S95GT · Jun 28, 2012

I have a the same problem with mine following a tranny rebuild. I replaced the trans mount. no help. then replaced the u-joints on my alumnium DS. No help. I also removed the tranny again and changed the pilot bearing again. no help. What made it better was clocking the DS at the axel 90* at a time till I found a sweet spot. I still have the vibs but not till I get to 85mph.. It might also be my engine mounts too causing the DS misalignment.

MustangChris · Jun 28, 2012

take your driveshafts in for balance people. theyll check the u joints, ensure its not bent, and balance it all for like 45.00.... plus they even painted mine (which pissed me off because it is aluminum....)