Ron Uminium
New Member
- Posts
- 19
- Location
- New Malden, Surrey
Hi again, sorry, this is my last new thread today I promise (bloody newbies ![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
When I recently bought my latest beast (1992 RR classic 3.9 auto) it was making a strange drivetrain-related grinding noise above about 35mph when throttled off / coasting. The noise stops if you throttle back on, OR if you brake, and comes back again if you coast again.
So I asked a few people who I thought should know, and they sucked in air and said, "Ooooh that'll be your diff" and when I spoke to the seller he said he thought it was the rear diff. It was difficult to identify exactly where the noise was coming from.
Being not a terribly proficient mechanic, I wondered whether to get someone to do the work, like I usually do, or try and do it myself. Feeling brave, I chose the second route, so I sourced a rear diff, read up about how to do it and all that, and did it. It all went really smoothly - I was dead chuffed!
Until I took it for a test run.
The noise is still happening, exactly the same.
Do the symptoms I've described sound like a diff? I.e. the damn front diff!
Or if it could be something else, what else?
I am slightly loathe to try and change the front diff because it looks a whole shedload more difficult than the rear, mainly because freeing the half shafts to pull them out a tad looks way complicated. Unless folk hereabouts can persuade me otherwise..![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Thanks again in advance.
Ron
When I recently bought my latest beast (1992 RR classic 3.9 auto) it was making a strange drivetrain-related grinding noise above about 35mph when throttled off / coasting. The noise stops if you throttle back on, OR if you brake, and comes back again if you coast again.
So I asked a few people who I thought should know, and they sucked in air and said, "Ooooh that'll be your diff" and when I spoke to the seller he said he thought it was the rear diff. It was difficult to identify exactly where the noise was coming from.
Being not a terribly proficient mechanic, I wondered whether to get someone to do the work, like I usually do, or try and do it myself. Feeling brave, I chose the second route, so I sourced a rear diff, read up about how to do it and all that, and did it. It all went really smoothly - I was dead chuffed!
Until I took it for a test run.
The noise is still happening, exactly the same.
Do the symptoms I've described sound like a diff? I.e. the damn front diff!
Or if it could be something else, what else?
I am slightly loathe to try and change the front diff because it looks a whole shedload more difficult than the rear, mainly because freeing the half shafts to pull them out a tad looks way complicated. Unless folk hereabouts can persuade me otherwise..
Thanks again in advance.
Ron