New rearend rebuild grinding noise
#12
I truly thought my differential was ruined and was going to need to be rebuilt or replaced. It sounded BAD!
Erroneously, I thought that using the high dollar synthetic fluid would be better, but it actually caused MAJOR problems in my case.
Let us know what happens at the shop!
#13
from a stop turn your steering wheel sharply to the left or right all the way then go ahead and take off and note if theres any clicking or grinding noises from the rear.
jack the rear up and spin the wheels and try to hear for anything abnormal.
and finally what I would do is to bounce the rear of the car several times while its in park real good and see if you hear anything, this way you can try to narrow it down to the cause.
jack the rear up and spin the wheels and try to hear for anything abnormal.
and finally what I would do is to bounce the rear of the car several times while its in park real good and see if you hear anything, this way you can try to narrow it down to the cause.
Probably NOT the same issue for you, but my AuburnPro diff began making a TERRIBLE clunking/grinding noise and sounded like it was going to come apart at any moment when maneuvering at lower speeds. It turns out that the fluid I was using was WRONG!
I had installed Royal Purple Synthetic 140-85(I think). I spoke with an engineer at Auburn, the diff was designed to run a non-synthetic 80/90 fluid plus Ford Friction Modifier. I drained/flushed the Royal Purple and put the basic 80/90 dino oil in and the noise went completely away. I was shocked!!!
I share this just to make a point that the diff was designed around a certain fluid and using something else could cause terrible results. Note: my noise did not begin immediately either. It took a couple of weeks for the noise arise.
GOOD LUCK figuring this issue out!
I had installed Royal Purple Synthetic 140-85(I think). I spoke with an engineer at Auburn, the diff was designed to run a non-synthetic 80/90 fluid plus Ford Friction Modifier. I drained/flushed the Royal Purple and put the basic 80/90 dino oil in and the noise went completely away. I was shocked!!!
I share this just to make a point that the diff was designed around a certain fluid and using something else could cause terrible results. Note: my noise did not begin immediately either. It took a couple of weeks for the noise arise.
GOOD LUCK figuring this issue out!
Reason for saying everything above... I have an appointment to get my rear completely rebuilt Friday. I'll be doing most of it. I'll also be using that same fluid and if I have any problems I'm going to point to the fluid. Someone PM me in a week or 2 if I forget to post up my findings. Hopefully what I find will help someone else out.
#14
I have a horrible noise from my rear while turning. I've had Amsoil Synthetic in mine for about 25k miles and had the noise for about 10k.
EXACTLY the noise I have.
I put in 75-140?? I think Amsoil without the modifier. Seemed fine for about 15k miles.
Reason for saying everything above... I have an appointment to get my rear completely rebuilt Friday. I'll be doing most of it. I'll also be using that same fluid and if I have any problems I'm going to point to the fluid. Someone PM me in a week or 2 if I forget to post up my findings. Hopefully what I find will help someone else out.
EXACTLY the noise I have.
I put in 75-140?? I think Amsoil without the modifier. Seemed fine for about 15k miles.
Reason for saying everything above... I have an appointment to get my rear completely rebuilt Friday. I'll be doing most of it. I'll also be using that same fluid and if I have any problems I'm going to point to the fluid. Someone PM me in a week or 2 if I forget to post up my findings. Hopefully what I find will help someone else out.
#15
#16
so I'm sitting in the lobby and of course things always turn out this way - can't make the noise come up again. And I guarantee once I take it back out it'll make it again after a few minutes.. Well the guys initial diagnosis was that it may be the front wheel bearing. But I've heard all kinds of problems with the wheel bearings and I'm sure it's not it, because it only happens the split second before stopping or making a 90 degree right turn
#17
so I'm sitting in the lobby and of course things always turn out this way - can't make the noise come up again. And I guarantee once I take it back out it'll make it again after a few minutes.. Well the guys initial diagnosis was that it may be the front wheel bearing. But I've heard all kinds of problems with the wheel bearings and I'm sure it's not it, because it only happens the split second before stopping or making a 90 degree right turn
#18
Having just gone through this last week, the best way to test for a bad bearing is when the car is on the lift. Grab the top and bottom of the tire, and see if it will rock back and forth. If it does, you should do both bearings because they fail almost simultaneously.
#19
Well guys apparently its me tires scraping against the inside of the plastic fenderwell. There's this bulging spot where we believe the washer fluid bottle is. So when braking hard or turning the wheel its scraping against it. I'm hoping its as simple as that. I'm going to drive and let it where it out. But I'm not sure if lightly scraping against the fenderwell is going to cause that bad of crunching noise. Now comes the waiting game
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KingRando
2005-2014 Mustangs
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10-02-2015 08:06 AM