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rear end grinding noise Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Engine and Car Noises tigerpaw New User Jul 28, 2009, 5:36 AM Post #1 of 4 (4754 views) rear end grinding noise Sign In   To whom it may concern: This is my first post. I have a 1997 Trans Am WS6. The problem i have is around the rear end, that once i have driven the car for a while it sounds like loud popping, gears grinding together. it only does it when i am either turning left or right. if i drive straight, there is no sound and drives just fine. when i come to a stop and turn either left or right, it sounds like loud crackling, popping in and around the rear end. i have looked under car and can't find anything loose or cracked. i have replaced the rotors and brakes, also just put in 410.1 gears about a year ago. the whole rear axle has all new bearings. the weird thing is that when i first start driving the car it does just fine weather i turn left or right, no noise. it usually take about 20 to 30 miles before the noise starts and like i said only when i am making turns. just a note, i have taken the tires of and the pumpkin cover. the gears look brand new and i could not find any wear on them, the axle's are tight and when i spin them everything is nice and quiet. no loose play. i also checked the drive shaft and it is solid with no loose play. I AM STUMPED. can you help. Thank You, Tigerpaw Hammer Time Ultimate Carjunky / Moderator Jul 28, 2009, 7:54 AM Post #2 of 4 (4747 views) Re: rear end grinding noise Sign In That's easy. You have a limited slip differential and the clutches are chattering. Drain all the gear oil and refill it again but add a bottle of differential friction modifier. You cqan get it at most any auto parts store. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. tigerpaw New User Jul 29, 2009, 1:41 AM Post #3 of 4 (4736 views) Re: rear end grinding noise Sign In Thank you very much. looks like that was the problem. Hard to believe that all that noise came from the wrong type of oil used. Thanks again for your help, job well done. Hammer Time Ultimate Carjunky / Moderator Jul 29, 2009, 2:32 AM Post #4 of 4 (4732 views) Re: rear end grinding noise Sign In Glad we could help ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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