still have a vibration
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New User
Joined: Mar 2004
Posts: 5
Likes: 0
From: big springs ne
still have a vibration
need some help with a vibration at 2100-2800rpm have good mounts and no vacuum leaks in a 74 f-100 4x4 with a 390 np 435 trans and an np 203 transfer case any one with any ideas please help
Laughing Gas
Joined: Jan 2004
Posts: 913
Likes: 2
From: Pensacola, FL
maybe drive shaft....everytime i had an rpm specific vibration, either the counter weight had come off of the drive shaft, or it had been dented. costed me about 75 bucks to get it rebalanced every time.
Elder User
Joined: Jun 2001
Posts: 913
Likes: 0
From: Canada
If the vibration occurs when driving - the cheapest and easiest is to have your tire balance check.
If it does it in park, then you've got to look into the motor as far as I know - flywheel, balancer, crankshaft, etc.
If it does it in park, then you've got to look into the motor as far as I know - flywheel, balancer, crankshaft, etc.
