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10-06-2008, 07:48 PM
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#1
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12 Second Club
Join Date: Aug 2004
Location: Oradell
Posts: 8,369
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rear thump
i think i blew sumthin in the rear on the 95Z. under any kind of acceleration other than coasting, when the trans shifts into 2nd theres a massive thump from the rear end.... the harder u accelerate, the harder the thump. guess its goin to the shop tomarrow, gotta break out the 88 for daily driver duty for a while
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88 Camaro
95 Impala SS
97 Trans Am WS6
98 Blazer ZR2
00 Corvette
04 CTS-V
04 Grand Cherokee
07 Sublime Charger Daytona
09 Grand Cherokee Limited HEMI
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10-06-2008, 07:51 PM
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#2
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,153
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Maybe the trans mount?
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Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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10-06-2008, 08:36 PM
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#3
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12 Second Club
Join Date: Aug 2004
Location: Oradell
Posts: 8,369
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Quote:
Originally Posted by BonzoHansen
Maybe the trans mount?
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nope... just had the trans done a few months ago.... i wish it was that easy, and i had replaced that just prior to the trans going
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88 Camaro
95 Impala SS
97 Trans Am WS6
98 Blazer ZR2
00 Corvette
04 CTS-V
04 Grand Cherokee
07 Sublime Charger Daytona
09 Grand Cherokee Limited HEMI
12 Tahoe LT
17 Malibu LT
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10-06-2008, 08:38 PM
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#4
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,342
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ya, take the trans mount off and check it. you can't really see it on the car. i replaced mine and broke it within a week. just been driving it like that for now. eyeball your rear suspension though. maybe get a friend and power brake it?
Last edited by sweetbmxrider; 10-06-2008 at 08:39 PM.
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10-06-2008, 09:37 PM
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#5
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,900
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Your spare tire come loose?
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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10-06-2008, 10:59 PM
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#6
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10 Second Club
Join Date: Feb 2008
Location: Eatontown
Posts: 1,647
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I had the same symptoms in my old 95 firebird where a constant thumping would come from the rear under acceleration. Sounded like it was coming from right underneath the rear seats when you were inside the car. Turned out that I overloaded the suspension with too many people in the back seats. Do any heavy hauling lately?
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1999 C5 FRC: 12.7@114
2008 TBSS: 12.48@108
2017 Silverado 2500 do you even lift breh?
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10-06-2008, 11:03 PM
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#7
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11 Second Club
Join Date: Feb 2008
Location: Edison, NJ
Posts: 4,619
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Torque arm bushing?
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1999 Z28 Convertible. 6 speed swap, wide cowl hood, full hockey stripes, and a whining 10 bolt.
2008 Sierra Vortec Max. 6.2 swapped, headers, Magnaflow catback, GMPP CAI, NHT optioned tow package.
2006 GTO, 11.48 @ 118.3
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10-06-2008, 11:46 PM
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#8
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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I would check the tranny mount too. It's a 2 minute check, just get under the car and push up on the back of the trans. If the mount is busted enough to let the trans whack the floor, you should be able to push the trans up enough to see that the mount is toast.
It may not be it, but if it is, it'll save you the hassle of taking it to the shop.
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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10-07-2008, 11:46 AM
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#9
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Join Date: May 2006
Location: Midland Park, NJ
Posts: 1,389
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Broken spider gears
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10-07-2008, 01:08 PM
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#10
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The Mayor / 2009 Member of the Year / Moderator
Join Date: Jan 2005
Location: Northwest
Posts: 8,867
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That happened when ours broke the trans mount. It only happened above 2300 rpm, and only on 1-2 shift.
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1995 Z28 Convertible A4 13.78 @ 100 (CAI, high flow cat, catback, 160 thermo, hypertech, Strano springs, Koni yellows, sway bars, 3 pt. UMI SFC)
2018 Sea Doo GTX - 3 cylinders and das boooooost
Quote:
Originally Posted by BonzoHansen
Is English your 2nd language? Did you graduate high school? Your posts make my head hurt.
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 Team FARM 
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10-07-2008, 09:28 PM
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#11
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Join Date: Jul 2005
Location: Medford, NJ
Posts: 502
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+1 on tranny mount.... broke 4 factory ones before going to energy suspension mount FTW!
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1993 Trans Am ---> LT1 bolt ons (Sold)
2002 Firehawk Trans Am ---> SLP 400HP kit, LS6 intake, LS6 block (Sold.... Miss her)
Current Vehicle
2002 Chevy Silverado 1500
2005 GSXR 750 Street Fighter Flat Black Red Rims
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10-08-2008, 01:23 AM
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#12
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12 Second Club
Join Date: Aug 2004
Location: Oradell
Posts: 8,369
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yeppp was the trans mount AGAIN lol
__________________
88 Camaro
95 Impala SS
97 Trans Am WS6
98 Blazer ZR2
00 Corvette
04 CTS-V
04 Grand Cherokee
07 Sublime Charger Daytona
09 Grand Cherokee Limited HEMI
12 Tahoe LT
17 Malibu LT
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10-17-2008, 11:09 PM
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#13
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,900
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haa
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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10-19-2008, 07:51 PM
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#14
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,153
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I win! I said it first!
My 82 T/A blew a trans mount every spring.
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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10-19-2008, 09:59 PM
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#15
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Resident Camera Guy
Join Date: Aug 2004
Location: North Jersey
Posts: 10,971
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I've had the trans mount bolt back out before causing the similar sound.
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