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06-28-2010, 07:09 AM #1
right rear clunking over bumps.bearings?
hello.i have a 98 ta.i have reaplced the springs with some lowering ones.after i replaced springs,i noticed that my right rear quaterpanel gets an annoying rattle going over bumps.pretty consistant.i made sure it wasnt my springs,its not s loose shock mount,its not the speaker,or the amp or the alarm sensor.i raised my car on a lift and was able to get quite a bit of play in the rigjht rear wheel.just like a bad wheel bearing.but i do not hear a growl.maybe its cause my exhaust is too loud.lol.could a bad bearing cause this type of clunking without the typical wheel bearing growl?
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06-28-2010, 08:07 AM #2
- Join Date
- Jan 2009
- Location
- North Jersey
- Posts
- 11,496
Phantom Black Metallic- 2004 GTO M6
Have you checked your exhaust to see if the rear end is contacting the muffler/pipe? You should have a growl with a bad wheel bearing. Have you checked the brakes on the right rear as well? Also, have you checked to see if your spare/jack are tight?
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06-28-2010, 09:54 AM #3
also that exhaust comes extremely close to the panhard bar on that side. There are also a plethora of exhaust shields in that area. Might check all that stuff over. Does it sound like a rattle or is it a more solid sound?
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06-28-2010, 09:57 AM #4
I just noticed a similar thing with mine right after I got the Koni/Strano's on. When I hit a larger bump it feels like the ass-end is bottoming out. I already have the UMI relocation kit for the PHB so I know it isn't that...
Subscribed to see what others say about your situation as it might pin-point something with mine.
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06-28-2010, 10:10 AM #5
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06-28-2010, 10:14 AM #6
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06-28-2010, 12:07 PM #7
its definatley a rattle. its not a solid thump.i have bmr panhard and bmr lca,s.bought the car without the spare tire and jack.i didnt think about the brakes.as much play as there is when i shake the wheel,one would think the lugnuts wernt torqued!what im saying is..i think my wheel bearing should be growling pretty good considering the amount of play i have in the wheel. which tells me to put a torque wrench on the lugs when i get home.i will definatley pull my wheel back off and go through everything with a fine tooth comb.i didnt think about the panard bar or the heat shileds.or my muffler hitting the axle.the latter sounds very accurate.i will keep yall posted .thanks for the advice.i have no doubt we will get to the bottom of this.
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06-29-2010, 03:56 AM #8
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07-03-2010, 12:30 PM #9
ok.after a long hard week,i was able to get my car on some jack stands to see what the deal was.i took my wheel off and brake rotor.the axle hub DOES NOT HAVE UP AND DOWN PLAY,BUT IN AND OUT PLAY.what the heck could that be?i try to shimmy it up and down but there is no slack or play.but it will pull in and out about a quarter inch or so.enough to not be normal i believe.could it be shims or something? when the wheel is on,it appears to be worse.i think that is where my clunking is coming from.i dont think its the wheel bearing cause likei said earlier its not growling.please chime in.thanks
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07-03-2010, 04:17 PM #10
- Join Date
- Jan 2009
- Location
- North Jersey
- Posts
- 11,496
Phantom Black Metallic- 2004 GTO M6
Sounds like the rear is shimmed too far to the left. You might need to add shims to the right and remove some from the left to center the differential. If and when you DO shim the rear, examine the fluid for any metal flakes. Hopefully you haven't damaged the ring/pinion. There is a writeup in this month's issue of GMHTP about a diff swap and shimming it.
And since you lowered the car, have you examined the panhard bar's bushings for wear?
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07-03-2010, 05:00 PM #11
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07-04-2010, 04:19 AM #12
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07-04-2010, 04:21 AM #13
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07-04-2010, 05:04 AM #14
thats what i was thinking.this clunking is driving me nuts.now im not sure if its the axle making the clunking noise or not.it sounds like its right behind the speaker panel on the right rear seat.gonna take the trim panel off today and have someone ride in the rear seat.well,that explains why im not getting a wheel bearing growl.cause its not the bearing.
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07-04-2010, 02:51 PM #15
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07-04-2010, 03:24 PM #16
you said that it sound like a rattle... check the that the heat shield is not touching the bottom of the fuel tank and/or the top of the muffler. When i bought the car I had a rattle and it was the muffler hitting the panhard bar. The panhard bar had been notch by the muffler pretty bad so it was an indication that its been going on for a while. I just had to loosen up the exhaust parts and reposition/adjust everything.
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