RickyMartinZ28

iTrader: (5)

Alrighty, when I first finished my exhaust was smacking everything under the car. The Pass side was hitting the floor pan, fixed it. Exhaust tip was tapping the rear of the car, fixed it. Now I've got another bump I can't find... Whenever I'm in 1st or 2nd and romp on it a bit it rubs the bottom of the car somewhere... I thought it was hitting the brace under the seat that the y-pipe has the notch for so I put a high temp rubber spacer in it, it fixed the problem. But I can put it in gear and hold the brake and touch the gas and that's not where its rubbing, even though the spacer fixed it. It sounds like its coming from around the front of the transmission??? But there is nothing right there... Anyone have any Ideas??? I'm out of things to try here...

If the spacer is there it doesn't do it, but whenver I take it out it immediatly does it again. But when the spacer isn't there it doesn't touch anyways... just to be clear.

-Rick

RickyMartinZ28

iTrader: (5)

Oh yeah, its Pacesetter LTs with the ORY and and DMH right after the Y going into a factory style catback....

I gotta find this, I can't step on the gas until this stops, sounds like its gonna hurt something...

-Rick

DeltaT

iTrader: (5)

Fold up a piece of header wrap or even use a wedge made of wood, and start putting it into a spot, then test to see if the bump goes away. If it doesn't, move it a foot backwards and try again. You'll find it soon enough.

Expect to lose a couple pieces of wrap or wood during the testing. I'd start on the passenger side since it moves up when the motor torques over when revving.

Jim

RickyMartinZ28

iTrader: (5)

I think it may be rubbing the torque arm that runs from the Tranny to the rear end... I don't see it moving from side to side that far back though, theres only about a 1/2 inch of clearance though...

But we even put this thing up on the lift and my dad stood underneath and looked around, couldn't hear it outside the car, and saw nothing...

-Rick

LT1

iTrader: (1)

Look underneath for a worn out area, from that bump hitting repeatedly.

RickyMartinZ28

iTrader: (5)

I've been trying to find a spot, can't seem to find it...

-Rick

LT1

iTrader: (1)

im almost wondering if its your transmission mount broken, makes a big Thud or bump type noise and you can feel it hit the underbody on heavy acceleration. but since it doesnt happen all the time probly something else.

RickyMartinZ28

iTrader: (5)

We've already checked all the mounts and they all look good. I'm just gonna have to get back under there this weekend since it'll be decent outside...

-Rick

RickyMartinZ28

iTrader: (5)

Well, whatever it is it happened the instant I installed the LTs

-Rick

Houdini

iTrader: (2)

Did you check around the headers themselves? Steering shaft?

Do you have rubber or poly mounts on your motor/tranny.

I had the same thing happen to me, ended up being my transmission mount causing all the problems. It was the stock rubber unit, to look at it you would think it was fine (only 23,000 miles on it), no apparent wear or tears... but let me tell you, that bitch was shot! Replaced it with a poly mount and all my troubles went away.

RickyMartinZ28

iTrader: (5)

Well while looking under the car while its on the lift and torquing the engine there is not excessive movement, not enough to make anything touch anything else, yet there is still the noise inside the car. I'm gonna get back under it tomorrow and check the torque arm, it seems excessively close to me.

-Rick

RickyMartinZ28

iTrader: (5)

It also seems that the 6speeds tear them up more frequently than the autos... Tranny Mounts I mean...

-Rick

95 bright teal

my auto has been through 3 trans mounts, put a energy supesion in, worked great, but i didnt want to stress the tailshaft so found a stock rubber one with a better design and havent had problems.

When it happened the second time i spent 3months trying to find the problem but it was the mount all along

RickyMartinZ28

iTrader: (5)

I think I found it today, I'm pretty sure its rubbing against the torque arm right after the transmission.

-Rick