Vibration @ 80 MPH
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From: Portland OR
Vibration @ 80 MPH
Can some of you guys give me your thoughts on this: I have a 2002 coupe with 25K miles.......400 RWHP (Heads & Cam & Headers) stock driveline except for Exedy Single Disk. I have a vibration at 80 MPH and it stays the same at higher speeds as well. The vibration is felt in the steering wheel as well as the seat. When the clutch is disengaged the vibration is still there. Things I have done to date:
1) Load Balanced all the tires
2) Detailed inspection of the rack and tie rod ends (nothing is loose)
3) Wheel bearing run out is nothing on the fronts
4) 4 Wheel alignment - all good
This is all leading me to the rear end Drive axles or what?
HELP!
Too-Tall in Detroit
1) Load Balanced all the tires
2) Detailed inspection of the rack and tie rod ends (nothing is loose)
3) Wheel bearing run out is nothing on the fronts
4) 4 Wheel alignment - all good
This is all leading me to the rear end Drive axles or what?
HELP!
Too-Tall in Detroit
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From: gilbert az
Have you switched the brake rotors ?....a friend of mine bought the aftermarket drilled GM rotors and after chasing a vibration at high speed, Chevy found it was one of the rotors causing the problem...worth a look.
Le Mans Master
Joined: Feb 2004
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From: Living the Taxation Dream Indiana
Do not drive over 80mph 
Sorry could not resist
Seriously, have you had the tires and rims checked for run-out. They could be balancing but still have too much out of roundness (not sure if that is a word). When they are balancing them on the wheel balancer check for wobble or up and down movement along with being sure that you do not have a broken belt in any of the tires. Check to be sure no moisture has collected in the tires (enough to form a small puddle). Also be sure that the wheels are mounting up flush to the hub. Be sure there is no corrosion or anything on the mating surface. Good luck
Sorry could not resistSeriously, have you had the tires and rims checked for run-out. They could be balancing but still have too much out of roundness (not sure if that is a word). When they are balancing them on the wheel balancer check for wobble or up and down movement along with being sure that you do not have a broken belt in any of the tires. Check to be sure no moisture has collected in the tires (enough to form a small puddle). Also be sure that the wheels are mounting up flush to the hub. Be sure there is no corrosion or anything on the mating surface. Good luck
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From: Portland OR
The Rotor issue is interesting..........because I did put new D&S rotors from Dana on them (I think they make the GM part as well).
On the other note I had the full gamet on the wheels and rims. Aligned the spots on wheel and rim, balance with 700 lbs of down force, and run out checked as well.
On the other note I had the full gamet on the wheels and rims. Aligned the spots on wheel and rim, balance with 700 lbs of down force, and run out checked as well.
Le Mans Master
Joined: Feb 2004
Posts: 5,482
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From: Living the Taxation Dream Indiana
Originally Posted by Too-Tall
The Rotor issue is interesting..........because I did put new D&S rotors from Dana on them (I think they make the GM part as well).
On the other note I had the full gamet on the wheels and rims. Aligned the spots on wheel and rim, balance with 700 lbs of down force, and run out checked as well.
On the other note I had the full gamet on the wheels and rims. Aligned the spots on wheel and rim, balance with 700 lbs of down force, and run out checked as well.
