mirrabucca
Well-Known Member
- Joined
- Nov 26, 2019
- Messages
- 336
- Reaction score
- 257
- Points
- 63
- Age
- 72
- Location
- Canberra
- Members Ride
- VX S pack (Devil Yellow)
VX V6 auto. Noise started about 500 k's ago. Started as a moaning nolise coming from under the car at about 40 kph when starting from cold. Noise disappeared after abour 5 k's. I did a 300 k's trip and no problem or noise. Then over the days, it got worse. Lasting about 10 to 15 k's into my journey, but only from a cold start.
Now it comes in at about 40 k's, disappears as I speed up, then comes in at 50, goes away at 60. Back to about 70, and quiet at 80. But still only from a cold start.
When the noise is apparent, it doesn't change if I coast, decelerate or slip into neutral. I had a passenger in and they said it sounds like its coming from the rear left hand side. But as I drive it seems to be coming from nearer the middle. Hard to tell.
I jacked the car up and put it on stands under the body. Spinning the wheels by hand there's no noise. Start the car (making sure I set TRACTION to OFF!) no noise at idle, either in gear or in neutral. Revving it up to 40 k's and the noise is there, same at 70. Same as on the road.
If I block either rear wheel, the noise is still there at the same speeds. But I still cant tell where it's coming from.
If it was wheel bearings, blocking that wheel would stop the noise. I dont suspect diff wear as the noise is constant, accelerating, decelerating and coasting.
I had the tailshaft centre bearing replaced about 15000 k's ago. Maybe a dud bearing? Or diff pinion bearing? Or Gearbox output shaft bearing?
Maybe up on a hoist would make it easy to sort out where the noise is coming from.
Yes, I am taking it to a transmission specialist, but I thought I'd see if anyone had a similar experience.
Now it comes in at about 40 k's, disappears as I speed up, then comes in at 50, goes away at 60. Back to about 70, and quiet at 80. But still only from a cold start.
When the noise is apparent, it doesn't change if I coast, decelerate or slip into neutral. I had a passenger in and they said it sounds like its coming from the rear left hand side. But as I drive it seems to be coming from nearer the middle. Hard to tell.
I jacked the car up and put it on stands under the body. Spinning the wheels by hand there's no noise. Start the car (making sure I set TRACTION to OFF!) no noise at idle, either in gear or in neutral. Revving it up to 40 k's and the noise is there, same at 70. Same as on the road.
If I block either rear wheel, the noise is still there at the same speeds. But I still cant tell where it's coming from.
If it was wheel bearings, blocking that wheel would stop the noise. I dont suspect diff wear as the noise is constant, accelerating, decelerating and coasting.
I had the tailshaft centre bearing replaced about 15000 k's ago. Maybe a dud bearing? Or diff pinion bearing? Or Gearbox output shaft bearing?
Maybe up on a hoist would make it easy to sort out where the noise is coming from.
Yes, I am taking it to a transmission specialist, but I thought I'd see if anyone had a similar experience.