Hello everyone.
I wonder if anyone could help with a problem I'm trying to diagnose: vibrations in the drivetrain..I think.
In 2nd gear from about 3.5k to 4k there's a distinct vibration/grumbling from what feels like the back end but it mildly shakes the steering wheel too.
It then disappears.
The same thing happens in 3rd but at 2.5k to 3k ... And again disappears beyond that rpm. So not the same rpm though these figures do correspond to the same/v similar road speed.
Other gears seem generally fine though I think it's occasionally apparent.
Firstly, I have to admit this seems to only have appeared after putting on some new Bridgestone Potenza Sports 1000 miles ago, so my feeling is that there's something peculiar to the carcass of them that's causing this or maybe it's simply a straight up wheel balance issue which I'll get checked later this week (although one of the wheels has already been rebalanced after a repair on the (brand new) tread thanks to a feral nail)
It didn't show up straight away but after perhaps 6 to 700 miles.
I've swapped out the diff oil, the previous oil had only been in about 1000 miles but I thought it might have been something to check.
I guess aside from the obvious stated above, and given the vibration occurs at specific road speed it's most likely drive train related? Could a wheel imbalance only resonate at particular speed ... Wouldn't it just get worse and worse with rising speed?
Cheers, and sorry for the lengthy post
Forgot to say (though I think T-Tony's advice is likely the correct course to follow first), boot floor has been fixed already, with new diff hanger.
I wonder if anyone could help with a problem I'm trying to diagnose: vibrations in the drivetrain..I think.
In 2nd gear from about 3.5k to 4k there's a distinct vibration/grumbling from what feels like the back end but it mildly shakes the steering wheel too.
It then disappears.
The same thing happens in 3rd but at 2.5k to 3k ... And again disappears beyond that rpm. So not the same rpm though these figures do correspond to the same/v similar road speed.
Other gears seem generally fine though I think it's occasionally apparent.
Firstly, I have to admit this seems to only have appeared after putting on some new Bridgestone Potenza Sports 1000 miles ago, so my feeling is that there's something peculiar to the carcass of them that's causing this or maybe it's simply a straight up wheel balance issue which I'll get checked later this week (although one of the wheels has already been rebalanced after a repair on the (brand new) tread thanks to a feral nail)
It didn't show up straight away but after perhaps 6 to 700 miles.
I've swapped out the diff oil, the previous oil had only been in about 1000 miles but I thought it might have been something to check.
I guess aside from the obvious stated above, and given the vibration occurs at specific road speed it's most likely drive train related? Could a wheel imbalance only resonate at particular speed ... Wouldn't it just get worse and worse with rising speed?
Cheers, and sorry for the lengthy post
Forgot to say (though I think T-Tony's advice is likely the correct course to follow first), boot floor has been fixed already, with new diff hanger.
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