02 With Vibration
#1
02 With Vibration
New here so bear with me. Just purch. an 02 ssei w/71k on the clock. My vibration is at idle, and at 35mph and 45mph - after the torque converter locks up. My dealer isolated the trans (torque conv) and even removed the serpentine belt - vibration still there.
There was a lot of movement in the rear motor mount. Is this fluid filled? The rear mount looked almost new. They replaced it, and a front mount, both with aftermarket mounts. The vibe is still there.
They disconnected the dogbone in front, checked and found a frequency vibration of 185. GM says 35-70 is acceptable. They loosened the mount slightly, and it fell to 80, still high. Put it all back together, and it feels slightly better.
QUESTIONS:
Is my prob in the mount or should I look for something else.
If the mount, should I go to factory OEM, or is there a better aftermarket available?
Any help is appreciated.
Thanks
*** Moved to it'* own thread for better visibility ~ Kevin ***
There was a lot of movement in the rear motor mount. Is this fluid filled? The rear mount looked almost new. They replaced it, and a front mount, both with aftermarket mounts. The vibe is still there.
They disconnected the dogbone in front, checked and found a frequency vibration of 185. GM says 35-70 is acceptable. They loosened the mount slightly, and it fell to 80, still high. Put it all back together, and it feels slightly better.
QUESTIONS:
Is my prob in the mount or should I look for something else.
If the mount, should I go to factory OEM, or is there a better aftermarket available?
Any help is appreciated.
Thanks
*** Moved to it'* own thread for better visibility ~ Kevin ***
#2
Senior Member
True Car Nut
Please describe the vibration. The 35 and 45 can be a number of things, but vibration at idle rules out a lot of the drive train. Is the car shaking? Do you feel it in the brake pedal? Do you feel it in the seat of your pants? Can you hear an unusual noise? Is the vibration audible? Can you walk around the car and determine a general area where the vibration is coming from?
Describe everything that comes to mind.
Describe everything that comes to mind.
#3
The vibe seems to be totally chassis - steering whl, seat, gas pedal, floor. No noise. No general area. The mech first thought it to be what he called a chassis ground.., such as vibrating exhaust, brakes lines, etc. Could find nothing.
#4
Retired Senior Admin
Expert Gearhead
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Likes: 0
Received 28 Likes
on
24 Posts
I would check the isolators on the motor and trans mounts. Can you feel the vibration in your hand if you place it on the engine? Could be a bad harmonic balancer.
#5
Senior Member
True Car Nut
Check the chassis to frame mounts and vibration dampeners. You might have a missing or broke bolt, or a dampener torn.
#6
With in gear, much more noticeable. Remember, it is still there with trans isolated from engine.
#7
#8
Senior Member
True Car Nut
The engine frame has isolation and insulators as well. I believe there are 6. They need to be tightened to 141 ft lbs if found loose.
#9
Anywhere the chassis bolted to the frame there is a bolt and a puck like dampener. Not sure if your term and mine are the same, but I think there are more than 4. It'* too damn cold in the garage to go jack the car up and count them. But, when you get under the car, take a trip up each side of the frame rail on a creeper and check them.
The engine frame has isolation and insulators as well. I believe there are 6. They need to be tightened to 141 ft lbs if found loose.
The engine frame has isolation and insulators as well. I believe there are 6. They need to be tightened to 141 ft lbs if found loose.
Thanks
#10
Senior Member
Posts like a Supercharger
Join Date: Dec 2005
Location: the 'swha
Posts: 155
Likes: 0
Received 0 Likes
on
0 Posts
just to add check the rear tierod-links. Its sounds like the same problem i have. I also have a complete car shake, first thought it was the front end...but its totally the back.