Is it my rear?
Thread Starter
Joined: Feb 2006
Posts: 322
Likes: 12
From: Tampa Bay Area
Is it my rear? So yesterday while making a left turn, I got down on the throttle a bit (around 3k). I had a bit of wheel spin followed by a grind and a bang. Now, if I drive normal, everything seems fine. No grinding or whining. If I go heavy on the throttle from a stop, there is a loud banging coming from the back of the car. Where do I start looking? Or is this a common sign of the posi letting go?
is it an 'inside something' muffled 'bang' or unmuffled hitting the body/frame bang ?
I would think there would be no difference in 'bang' comparing normal throttle vs heavy throttle with the rearend internals. A 93 would have an Auburn 'posi' and it's internals 'should' make an identical noise (if broken) under various throttles.
Time to drop cover of rear and do a visual.
I would think there would be no difference in 'bang' comparing normal throttle vs heavy throttle with the rearend internals. A 93 would have an Auburn 'posi' and it's internals 'should' make an identical noise (if broken) under various throttles.
Time to drop cover of rear and do a visual.
Thread Starter
Joined: Feb 2006
Posts: 322
Likes: 12
From: Tampa Bay Area
Yeah, that's the part I dread the most. I hate the gear oil mess that usually leaves behind.
Yes mine banged too when i turned right and hit the gas. it was the tranny mount,, mine was half ripped but allowed the tranny to move enough to make the noise,,, I put a new mount from gm on it and its quiet now.
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Dood that crack in the tranny mount is a dead give away. Its your mount from what I can see, and yes I have had that same thing happen to me a FEW times, and every time it sounded like it was coming from the rear. Sound is just like water as far as it will travel the lest resricted way, so it can fool you.
Last edited by theskitztikwon; May 9, 2011 at 11:47 PM.
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yah crack in the front end of the mount i see,,,,,, place the car on stands, put the jack under the tranny pan (with a large block of wood to distribute weight on the pan) and slowly jack up youll see the travel the mount has,,, way too much,, it will eventually hit the floor. The mount is attached at the front and back,, only one needs to be cracked for the transmission to hit the floor. This trick is also how you change and replace it.
Thread Starter
Joined: Feb 2006
Posts: 322
Likes: 12
From: Tampa Bay Area
Thanks guys. Replaced trans mount and noise gone. Glad I didn't have to soak myself in gear oil again.
Here's what the mount looked like when I lifted the trans.
Here's what the mount looked like when I lifted the trans.
