Grinding & Rubbing in the rear end
#1
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I have an 04 a4 gto, everytime I turn in reverse or make sharp turns in drive the is a rubbing or grinding sound in the rear. Has anyone else experienced this? If sp can you give me some insight as to what it might be. I took it to a local mechanic shop, and they told me it was the bushing that had gone bad so there was a lot of play on the rear, so I had them change them all and $1000 later I still have the problem. Any help would be much appreciated!
#5
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You likely need friction modifier in your diff or a diff rebuild-I speak from experience and have built dozens of them.
The quick fix is a good quality 85w140 dino oil such as Castrol and the proper friction mod. Many have had good luck with the new GM stuff. Torco rgo is common in GTO circles but I have seen the least wear protection in diffs using that oil on a consistant level.
Driveshaft and exhaust should be checked too.
The quick fix is a good quality 85w140 dino oil such as Castrol and the proper friction mod. Many have had good luck with the new GM stuff. Torco rgo is common in GTO circles but I have seen the least wear protection in diffs using that oil on a consistant level.
Driveshaft and exhaust should be checked too.
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#10
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I had the same noise on my car. Came to find out my exhaust pipe was rubbing against my spinning driveshaft rubber connector when the car slightly squatted.. It was obnoxious
#13
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The odd noise I was experiencing sounded like something in my trunk was shifting around and it turned out to be rubber failure in my multi piece drive shaft. BMR one piece and it is gone.
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When i bought the car the previous owner had royal purple in it and after i had it around 3,000 miles i started to get low speed noises when turning like described. Switched to torco and have had no problems in 20,000 miles. What is your "expert" opion on what oil is best or should be used?