Rear end gear grinding

dthem370 · 01-27-2010, 08:11 PM

Hey guys i was driving up a steep incline at my school and then while making a right turn into the parking garage (which is also a steep incline and smooth surface) my car wouldnt go up the hill...it just would rev and the wheels wouldn't spin and it was making a weird grinding noise. i put it in reverse and then drive again and gave it some more gas and it finally went up. the traction light came on and it sounded like the gears were grinding or something when i finally made it up the parking garage entrance. Is this normal and just the traction control kicking in?

ChrisSlicks · 01-27-2010, 08:18 PM

The traction control doesn't make grinding noises, it typically makes no noise at all.

It sounds like there is a potential problem in the works with your automatic transmission, I would get it checked out.

dthem370 · 01-27-2010, 10:27 PM

the noise didnt sound like it was coming from the transmission. It felt like it was coming from the rear end. Could it have been the posi transferring more power to the outer wheel?

spearfish25 · 01-27-2010, 10:49 PM

Nope. I've never heard such a noise and I guarantee you would have seen a 1,000+ post thread about this by now if they all did it. Maybe your rear diff has an oil leak or other issue.

ChrisSlicks · 01-28-2010, 09:09 AM

Quote:

Originally Posted by dthem370

the noise didnt sound like it was coming from the transmission. It felt like it was coming from the rear end. Could it have been the posi transferring more power to the outer wheel?

It's a viscous LSD, it should never make noise unless it is severely damaged, i.e. from extended track usage.

The only noise I've heard out of these units in faint clicking of the axle shafts, but this had no effect on drivability.

01-27-2010, 08:11 PM	#1 (permalink)
dthem370 Base Member Join Date: Sep 2009 Location: San Diego Posts: 163 Drives: Nissan 370Z Rep Power: 16	Rear end gear grinding Hey guys i was driving up a steep incline at my school and then while making a right turn into the parking garage (which is also a steep incline and smooth surface) my car wouldnt go up the hill...it just would rev and the wheels wouldn't spin and it was making a weird grinding noise. i put it in reverse and then drive again and gave it some more gas and it finally went up. the traction light came on and it sounded like the gears were grinding or something when i finally made it up the parking garage entrance. Is this normal and just the traction control kicking in?

01-27-2010, 10:49 PM	#4 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1856	Nope. I've never heard such a noise and I guarantee you would have seen a 1,000+ post thread about this by now if they all did it. Maybe your rear diff has an oil leak or other issue. __________________ 2013 Cadillac V-Wagon, RIP Z

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01-27-2010, 08:18 PM	#2 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 653	The traction control doesn't make grinding noises, it typically makes no noise at all. It sounds like there is a potential problem in the works with your automatic transmission, I would get it checked out.

01-27-2010, 10:27 PM	#3 (permalink)
dthem370 Base Member Join Date: Sep 2009 Location: San Diego Posts: 163 Drives: Nissan 370Z Rep Power: 16	the noise didnt sound like it was coming from the transmission. It felt like it was coming from the rear end. Could it have been the posi transferring more power to the outer wheel?