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why is there a thump when i backup?

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Old 11-16-2007, 12:02 PM
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why is there a thump when i backup?
is that normal?
 
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Old 11-16-2007, 01:07 PM
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Normal when you run over the mother in law...
 
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Old 11-16-2007, 04:40 PM
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same here, 2008 Gt3, with a thump on backup, took it to the dealer, they said nothing wrong, but its annoying, to say the least.
 
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Old 11-16-2007, 04:54 PM
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neighbor's cat?
 
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Old 11-16-2007, 06:42 PM
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nope. it's neither my mil or my neighbor's cat. there's no dead midget in the trunk either.
 
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Old 11-16-2007, 06:49 PM
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You must have some electronics in the car using Energizer Batteries...

 
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Old 11-16-2007, 08:18 PM
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oh it's only a single thump when backing up. it doesn't keep going and going and ...
 
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Old 11-16-2007, 09:38 PM
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don't set your handbrakes too tight when storing for long periods. could be your brake pads releasing after a long tight set.
 
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Old 11-16-2007, 10:06 PM
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Mine does the same but more like a boing sound coming from the coilovers. Took it to the dealer and they said its normal and after break in you will hear more noise
 
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Old 11-16-2007, 10:34 PM
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Originally Posted by oak
don't set your handbrakes too tight when storing for long periods. could be your brake pads releasing after a long tight set.
I second this. Esp. after washing your car and the rust builds up on the iron rotors and the car's been sitting for a while. You don't even have to have the handbrakes on. The build up will still cause a boink.
 
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Old 11-17-2007, 12:11 AM
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something with the reverse gear?
 
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Old 11-17-2007, 09:50 AM
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Originally Posted by P97
I second this. Esp. after washing your car and the rust builds up on the iron rotors and the car's been sitting for a while. You don't even have to have the handbrakes on. The build up will still cause a boink.
If it just sits overnight it will do that after a wash. I've never seen the handbrake cause a problem.
 
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Old 11-17-2007, 04:30 PM
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yups oak is right... Might be that. If you're in Fremont and you're still worried you can always come by and let Dr. James listen to it.
 
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Old 11-17-2007, 09:47 PM
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sharky, thanks! let me know when would be a good day/time to swing by your facility. would also like to hear your muffler bypass system in person. sounds like a great mod!
 
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Old 11-18-2007, 06:38 AM
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i hear it i think its the brake ... i hear alot less noises in the 7 as i did with the 6 ...lol
 
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