ZeusXClassic

96 Xj 4.0

Im getting a rattling noise from the back of the Jeep but its not my tranny, axle, or brakes. Im trying to figure between the exhaust and my e brake.

The noise only occurs when I turn sharply or hold around 1900rpm. It sounds like my exhaust, but Ive had a new cat and 2 different mufflers installed.
What could it be?

ZeusXClassic

Also if I start the truck with the e brake pulled all the way itll make the same rattle at idle.

But nothin is touchin!

please help me

DaddyCat

I had a rattle that was hard to pin point, happened only sometimes. Turned out to be the rubber exhaust hanger had an enlarged hole so the metal hook vibrated in the rubber hole. I found this by having the jeep in gear, e-brake on and pushing up on the muffler from under the jeep. Only try this if you trust your e-brake.

93XJRay

this is one of the best ways to do it. try to get under it when its running and move it around a bit and see if you can get it to make the noise.

ZeusXClassic

what would be the best fix?

Ditchin the rubber hanger for a solid one or replacing the bushing?

DaddyCat

I would suggest you confirm where your rattle is coming from before you do anything.

What I did untill warmer weather is to move the rubber hanger part way off the top metal hook. The metal hook has a bulb end that keeps the rubber from falling off. The bulb end of the metal hanger is now inside the rubber piece and the larger part of the metal hanger stops the parts from vibrating (untill I can replace rubber and metal hangers). I used a bottle jack to move the rubber over about 1".

JJaycXj

Its an exhaust hanger I have a broken hanger and the rattle is caused by thAt. The symptoms you have are exactly the ones o did untill I found the problem