LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

LOUD clunking noise! Need HELP!!

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Old May 9, 2003 | 09:01 PM
  #1  
mike445's Avatar
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From: Wasaga Beach, ON (formerly Ft. Lauderdale,FL)
Exclamation LOUD clunking noise! Need HELP!!

Hi y'all,
Tonite while I was driving I heard a loud clunking noise coming from dead center of the car, sounded like right under the center console. It only happens on hard acceleration, not flooring it but not just tapping it. It shakes the whole passanger compartment. At speed there is no noise or problem. Only from a stop under hard acceleration. Any ideas? We put the car up on jacks and the noise was not there when we tested it. Once we dropped it we heard it again. I can drive around ok if I don't hit the accelerator. ANY help would be great! Thanks!

Mike
Old May 9, 2003 | 09:03 PM
  #2  
Rodrigues's Avatar
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From: Bloomfield Hills MI
Replace the tranny mount, its aprox 15 min install.
Old May 9, 2003 | 09:18 PM
  #3  
mike445's Avatar
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From: Wasaga Beach, ON (formerly Ft. Lauderdale,FL)
Tranny mount huh? What is the best one to go with? Some one said the 1LE tranny mount is the best if it needs to be replaced. What is the part number for the 1LE tranny mount? Is it safe to drive the car in the mean time as long as I don't slam the accelerator? Thanks again!

Mike
Old May 9, 2003 | 10:16 PM
  #4  
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From: Somewhere between a shotgun barrel, and a blood spatter on the wall.
yeah you should be fine driving it for a little while... long as you go easy on it... as fa as the 1le mount... i've heard some good, some bad... i keep using stockers... and im going thru em at about 1 every 7 weeks
Old May 9, 2003 | 10:22 PM
  #5  
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From: West Lafayette, IN
have you recently installed a new catback?? i had that happen when i installed my hooker catback and it was just the ipipe hitting the cross member. Got everything welded down and its fine. If you got a new catback....i would check that first....
Old May 9, 2003 | 10:57 PM
  #6  
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From: Wasaga Beach, ON (formerly Ft. Lauderdale,FL)
I put a new catback on last year but just had the problem start tonite. Scared the crap outta me. I thought the bottom of my car fell out. I'm getting a new tranny mount on Monday. I'll look up how to do it on the net, prolly Shoebox or Brent Frankers site. Should be easy enuf. My uncle has ALL the tools needed. Just nned a guide. I'm parking the car tonite when I get home till it's fixed. THANKS!!!!

Mike
Old May 9, 2003 | 11:20 PM
  #7  
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From: Cookeville , TN
trust me its the mount (tranny)
Old May 10, 2003 | 12:35 AM
  #8  
mike445's Avatar
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From: Wasaga Beach, ON (formerly Ft. Lauderdale,FL)
I'm gonna get a new tranny mount first thing Monday. Since the 1LE is no longer made I want an LS1 tranny mount. I have a 95 A4. What part number do I need? I also heard I need to order the bolts seperately? I guess I'll also need the part number for those. Thanks y'all.

Mike
Old May 10, 2003 | 01:54 AM
  #9  
SteveZ Z-28's Avatar
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From: St. Louis, MO
Sounds like a tranny mount to me. 2 ways to be for sure:

1. Best way is to jack up the car and look and see if the mounts looked ripped or torn. If you got the car on stands, you can jack up the tranny by the tranny oil pan, and you should be able to see the mount separate.

If you have an automatic:
2. Another easy way to check, but definately not the safest. Have someone get in the car, put on the parking brake, and hold their foot on the brake. Rev the car up SLOWLY, and look underneath the car. At a certain point you should be able to see the tranny torque up. BE CAREFUL. If it seems like the tires are going to break loose, get away from the vehicle. You should be able to see the tranny torque up a good time before the wheels break loose (unless you have really bad rear brakes, I guess).
Old May 10, 2003 | 07:54 AM
  #10  
danner's Avatar
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From: sumter
Originally posted by SteveZ Z-28
Sounds like a tranny mount to me. 2 ways to be for sure:

1. Best way is to jack up the car and look and see if the mounts looked ripped or torn. If you got the car on stands, you can jack up the tranny by the tranny oil pan, and you should be able to see the mount separate.

If you have an automatic:
2. Another easy way to check, but definately not the safest. Have someone get in the car, put on the parking brake, and hold their foot on the brake. Rev the car up SLOWLY, and look underneath the car. At a certain point you should be able to see the tranny torque up. BE CAREFUL. If it seems like the tires are going to break loose, get away from the vehicle. You should be able to see the tranny torque up a good time before the wheels break loose (unless you have really bad rear brakes, I guess).
what he said - plus check your TA bracket
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