ParadiseMJ Posted January 20, 2012 Share Posted January 20, 2012 I have been having a grinding, rolling sound under the MJ. Sometimes it does it when just sitting there idling, sometimes when taking off from a stop, sometimes when coming to a stop. It does not coincide with RPM or even coasting. I've checked the bearings, I've checked the brakes, driveline etc, I've spent a considerable amount of time laying under the Jeep looking for loose stuff...nothing. Until this morning. My exhaust is just laying on the cross member...looks like it belongs there, but I know it doesn't. It only moves about an inch any direction. It's not really clanging around. It's more like just riding the cross member and when the engine is running, well, it moves around. It's finally raining out here, and it's really raining and I do't have a dry place to look at it...so...is there a fix besides just strapping the pipe up. Do I insulate it. :dunno: I'm ecstatic that i found the source of the noise...now all I need to do is fix it...the right way. Suggestions?? Link to comment Share on other sites More sharing options...
cody4359 Posted January 20, 2012 Share Posted January 20, 2012 new rubber for your stretched exhaust hangers (rear hanger/t-case hanger) :dunno: Link to comment Share on other sites More sharing options...
JeffN Posted January 20, 2012 Share Posted January 20, 2012 New transmission mount, they get old and let the trans sag enough to cause that Link to comment Share on other sites More sharing options...
Jeep Driver Posted January 21, 2012 Share Posted January 21, 2012 New transmission mount, they get old and let the trans sag enough to cause that Link to comment Share on other sites More sharing options...
cruiser54 Posted January 21, 2012 Share Posted January 21, 2012 Very common and can be traced to the things already mentioned. Link to comment Share on other sites More sharing options...
carnuck Posted March 7, 2012 Share Posted March 7, 2012 cat rattling like popcorn? Link to comment Share on other sites More sharing options...
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