Help: Drive train noise--speed dependent
Thread Starter
Safety Car
Joined: Sep 2002
Posts: 4,030
Likes: 6
From: Maryland
Help: Drive train noise--speed dependent
I have a high pitch whine in the drive train (not engine) which occurs:
1. Only above about 52mph
2. In 6th, 5th, 4th gears (3rd maybe, engine is too loud to hear)
3. At various rpm's (1300-2000 in 6th, over 2000 in 5th, over 3000 in 4th)
4. never when the clutch is in at any speed
Can this be something easy like a speedo cable? Or is it a diff. bearing?
I have had this for a long time now. Keep putting off taking apart the diff. just for this.
1. Only above about 52mph
2. In 6th, 5th, 4th gears (3rd maybe, engine is too loud to hear)
3. At various rpm's (1300-2000 in 6th, over 2000 in 5th, over 3000 in 4th)
4. never when the clutch is in at any speed
Can this be something easy like a speedo cable? Or is it a diff. bearing?
I have had this for a long time now. Keep putting off taking apart the diff. just for this.
Team Owner
Joined: Jan 2004
Posts: 22,185
Likes: 65
From: NJ
Re: Help: Drive train noise--speed dependent (sothpaw2)
Its tough to say without hearing it, it could really be anything. The rule is that a "speed dependant" whine is usually in the rearend or tailshaft of the trans. You didnt mention the year of your car, but I doubt you have a speedo cable (did nay C4's?). If its a wheel bearing the noise should change if you swerve side to side sharply due to loading and unloading the bearings.
