GP964

Hi All,

Finally decided to post this question that i've been holding off for a bit. I have a 90 964 C2 with PSS9's and stock sway bars. Every time I take a corner (left/right) i can her what sounds to be a rubbing sound in the back of the car. It only sounds when you take extreme turns (like trying to fish tail the back end). I took off both rear tires, inspected the rims/tires and wheel well, but nothing at all. I check the right rear oil line and that has no rub marks, not see any body/tire rubbing.

Spoke to TRG and they suggested maybe the rear bearings. What are those??
What are the symptoms of bad rear bearings?

Thanks
GP

GP964

I was think of that, what are the symptoms of a bad rear wheel bearing?

ttAmerica RoadsterAWD

wheel bearings tend to "hum" while driving at normal speeds. the "hum" is exacerbated (louder) when there is load on them such as when taking a corner.

Jaime

clubrcr

That sounds a lot like CV joints. I had one go bad on me at the track, it was fine on the straight but it sounded awful in the turns. I would check that first. Easy fix if it hasn't destroyed anything else.

forklift

I am having the same problem on left hand turns. Getting it fixed next week.

mark964

If you have power steering is the fluid topped up? I rebuilt an engine an forgot about refilling the power steering fluid. Got a very nasty sound on turns - mostly left as I recall. Took a little while to figure out, but 3 bucks worth of power steering fluid was all it was. I too thought wheel bearing or CV joint. But nope, it was indeed the (lack of) power steering fluid.

Mark

GP964

Hi Marks,

Thanks for the input, but it doesn't "hum" when turning the steering wheel left or right. It only "hums" when you try to fish-tail on a left hander. How would one check the CV or right rear bearing?

Thanks

GP964

Fish Tail= Oversteer

Thx

mark964

FWIW ... my reference to power steering fluid. No noise turning the steering wheel. But a nasty noise when the CAR is in a turn. Hard turns might suggest it's just low and not empty. I'd check it anway. Believe me, it was not a nice noise and I was completely convinced it was something serious.

Mark