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Old Jan 10th, 07, 08:32 AM   #1 (permalink)
 
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Loud bang when I punch it =(

I just bought a 94 camaro last night...Everything seemed okay when I test drove it, but last night I was driving and I punched it...and it made a loud bang from underneath the car...It sounded like a bowling ball shot up from the ground and hit the bottom of it! It does that everytime I punch it...Does anyone know what that could be?
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Old Jan 10th, 07, 08:38 AM   #2 (permalink)
 
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Loud bang when I punch it

I just bought a 94 camaro last night...Everything seemed okay when I test drove it, but last night I was driving and I punched it...and it made a loud bang from underneath the car...It sounded like a bowling ball shot up from the ground and hit the bottom of it! It does that everytime I punch it...Does anyone know what that could be?

Last edited by DjD; Jan 10th, 07 at 03:14 PM.
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Old Jan 10th, 07, 08:40 AM   #3 (permalink)
 
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Loud bang when I punch it

I just bought a 94 camaro last night...Everything seemed okay when I test drove it, but last night I was driving and I punched it...and it made a loud bang from underneath the car...It sounded like a bowling ball shot up from the ground and hit the bottom of it! It does that everytime I punch it...Does anyone know what that could be?

Last edited by DjD; Jan 11th, 07 at 04:36 PM.
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Old Jan 10th, 07, 08:46 AM   #4 (permalink)
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Re: Loud bang when I punch it

Congrats on the Camaro purchase. Tell us more about your car, auto or stick, v-8 or v-6, etc. Where is the noise when you punch it, does it sound like the engine compartment or does it sound like it is coming from under the passenger compartment or does it sound like it is coming from the back of the car. First guess - trans mount or motor mounts. Post some more info and youll prob. get more responses. - Rob
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Old Jan 10th, 07, 08:51 AM   #5 (permalink)
 
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Re: Loud bang when I punch it

Its a 350 v-8 automatic. The noise sounds like it is coming from the very middle...Maybe a little more towards the front.
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Old Jan 10th, 07, 09:02 AM   #6 (permalink)
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Re: Loud bang when I punch it

Red 94 I am not familiar with those computer controlled car's it could be just about any thing with them from the opti spark ,plugs ,clogged cat does any codes come up ,I had a 97 z-28 and really I think you may have better luck at z-28.net…here is the link …good luck and Happy Motoring
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Old Jan 10th, 07, 09:02 AM   #7 (permalink)
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Re: Loud bang when I punch it

Check the transmission mount.If it is broken the torque arm pushes the trans. up into the floor of the car.
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Old Jan 10th, 07, 09:04 AM   #8 (permalink)
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Re: Loud bang when I punch it

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Originally Posted by 67 Plum View Post
Check the transmission mount.If it is broken the torque arm pushes the trans. up into the floor of the car.
I second that. A friends does the same thing because of the trans mount.
Either that, or you need a tune-up.
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Old Jan 10th, 07, 09:05 AM   #9 (permalink)
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Re: Loud bang when I punch it

Red 94 I am not familiar with those computer controlled car's it could be just about any thing with them from the opti spark ,plugs ,clogged cat does any codes come up ,I had a 97 z-28 and really I think you may have better luck at z-28.net…here is the link …good luck and Happy Motoring
http://web.camaross.com/forums/
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Old Jan 10th, 07, 09:21 AM   #10 (permalink)
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Re: Loud bang when I punch it =(

I would check the transmission mount first, good luck.
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Old Jan 10th, 07, 09:27 AM   #11 (permalink)
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Re: Loud bang when I punch it =(

Check The Read Mite Need New Suspension Bushings
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Old Jan 10th, 07, 09:37 AM   #12 (permalink)
 
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Re: Loud bang when I punch it =(

My third generation firebird had a "torque arm" running from the rear end to the side of the transmission...
I used to break the mounts at the trans... when I would hit the gas, the torque arm would hit the bottom of the car....
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Old Jan 10th, 07, 09:40 AM   #13 (permalink)
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Re: Loud bang when I punch it

Yeah, I concur on it probably being a bad mount. Put it up on lift, then put in gear, with foot on brake, and rev engine up. You will probably see something move that's not supposed to.

I would also look at all other chassis components while under there. Could be something weird, like broken spring, bad shock, u-joint ready to fall apart, etc, etc......

Nice thing is: it should be easy to spot the problem!

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Old Jan 10th, 07, 10:16 AM   #14 (permalink)
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Re: Loud bang when I punch it

I had a '71 vette with almost the same problem. Because vette's hood open the other way, I was able to see the problem easily. Let me tell you....when your are not expecting that, it can be quite a site to see your motor almost come out of the car!!

The only problem is that depending on hood clearance, I think you would probably hear that problem more when you let off the gas and it slams back onto the pad rather than it hitting the hood. East fix though.....just get a friend to stand in front of the car with the hood open and do the old "gas and brake" at the same time. That will tell for sure if it's a broken motor mount.
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Old Jan 10th, 07, 10:21 AM   #15 (permalink)
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Re: Loud bang when I punch it

Friends 97 Camaro did it too. Transmission mount. Sounded likke it was coming thru the floor.
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