3rd Gen / L98 Engine Tech 1982 - 1992 Engine Related

AHH! Banging noise comming from the iroc

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Old Nov 5, 2003 | 09:34 AM
  #1  
dj haf's Avatar
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From: Miami, FL
AHH! Banging noise comming from the iroc

after i put on my pulleys, i was driving around town by myselfand what not and ran into a new bullitt mustang that embaressed me the other day with 3 of my friends in the car when he tried to race me and pulled a little more than a car on me (mind you, i had 3 other people in my car). he and i launched right off the green light and by 100 mph i had a good car and a half on him.... he got so pissed that he wanted to run it at the next light, so when we ran it again, i noticed a banging noise comming from my car. it sounds like if my tranny mount was bad, but i checked it out and it's not. it only bangs off the hole, and when it shifts from first to second. if i drop it from neutral into drive with a little gas, it'll bang (i dont normally put it in neutral and then in drive... only did it to see if it would make a noise). any suggestions? i looked at the tranny mount and it's fine... i had my friend look at the motor mounts while i moved it from park and drive and he said the motor mounts look fine, even though a mechanic told me about a month ago that my motor mounts need to be replaced. what could it be? it only happens in hard acceleration, and it honestly sounds like it's a mount cuz thats almost the same sound i heard when i busted my tranny mount. could it possibly be the rear end? my friend used to own a 300zx and whenever he'd shift at hard acceleration, it would make the same banging noise. he said it was his differential bushings though... oo, and i still beat him the 2nd time... lol

Last edited by dj haf; Nov 5, 2003 at 11:59 AM.
Old Nov 5, 2003 | 12:31 PM
  #2  
Z28SORR's Avatar
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From: Friendswood, TX, USA
Could still be the motor mount. Most late model cars have the safety mount which doesn't allow the engine to flop around when broken like the old ones did. You have to get your head in there and look closely at the drivers side mount.
Old Nov 5, 2003 | 05:32 PM
  #3  
dj haf's Avatar
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its the tranny mount. i was trying to take it off, but DAMNNN, the bolts that connect the mount to the tranny wont come off no matter how much force i put into it. wtf, im really not in the mood to take it to someone to do it for $$$ when i can do it for free, lol

and the mount that broke is a poly trans mount that i bought at advanced auto... im going to see if my friend who works at a chevy dealer can get me one from the dealer

any idea on how to take out the damn bolts? they seriously feel stuck, i dont know how the dude i paid $10 to install it made them so tight! (ehh... i didnt have a jack stand and he said he'd do it for $10 so i let him, lol).. thanks guys
Old Nov 5, 2003 | 05:41 PM
  #4  
c1989rs's Avatar
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From: quakertown pa
use a breaker bar and get an energy suspension mout from auto zone it will out last ur gm one
Old Nov 5, 2003 | 06:23 PM
  #5  
Z28James's Avatar
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From: Jacksonville, Florida
and if that doesnt work at least you can hit stuff with the breaker bar. I know i gave my trash can hell when my oil filter wouldnt come off and my breaker bar was laying on the ground :P
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