Bad Vibration in Car
Thread Starter
Heel & Toe
Joined: May 2002
Posts: 24
Likes: 0
From: Humble TX
Bad Vibration in Car
I have a bad vibration around 3000 rpm to 3500 rpm. The problem is still there even if you bring engine to the same rpm's while in neutral or with the clutch released. The problem get worse with the ac on but the rpm is still the same. it will get worse as engine heat increases .
Any help would be great .
Thank You :cry
Any help would be great .
Thank You :cry
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
The good part is that you have narrowed it down to something rotating, the bad part is what?
If I were you I would take the serpentine belt off of your car and start it. You can run it safely like this for 1-2 minutes. Just be sure to monitor your coolant oil temperatures. Just do this long enough so that you can bring the rev's up to 3000-3500 a couple times to see if the vibration is still there.
If it is, then it is the engine or tranny. If it is not there, it is one of the accessories. You said it is worse with the AC on? Could your AC compressor clutch bearings be biting the dust?
If I were you I would take the serpentine belt off of your car and start it. You can run it safely like this for 1-2 minutes. Just be sure to monitor your coolant oil temperatures. Just do this long enough so that you can bring the rev's up to 3000-3500 a couple times to see if the vibration is still there.
If it is, then it is the engine or tranny. If it is not there, it is one of the accessories. You said it is worse with the AC on? Could your AC compressor clutch bearings be biting the dust?
Burning Brakes
Joined: Jun 2000
Posts: 1,148
Likes: 48
Re: Bad Vibration in Car (thode)
Sounds like a harmonic dampener to me. Take your belt off and if you still feel vibrations I'd start there. It may also be your flywheel but hopefully you're aware of what condition it's in through maintenance records.
