Strange clunk over bumps and sometimes on turns

[ascruggs]

For the last few months I've been hearing a slight clunk in my engine Bay Area when hitting bumps and taking turns. I figured it was my Cobb RMM and the cold. Here recently in the last week or two it's been getting much worse. I have acces to a full service garage so I lifted the car to tighten the mount and everything was tight. So, I figured maybe it's the rack and pinion because I read in a thread someone had that issue on their car. But agin the rack was tight. Now I'm confused, I've been working on cars for years and can't seem to figure out where it's coming from. The only mod I I've is the Cobb RMM. If anyone has ran into this issue and resolved the problem please let me know what I need to do. ITS DRIVING ME CRAZY! Thank you for any suggestions!

 

[Jvepps]

Factory exhaust hangers? If so wiggle it and see what happens. Stock are super sloppy.

 

[ascruggs]

Factory exhaust hangers? If so wiggle it and see what happens. Stock are super sloppy.

Thank you! I forgot about that! Might have to order some stiffer hangers tonight!

 

[ThaiFiesta]

Front sway bar / ARB bushes tend to go on these and make a clunk on bumps also

 

[ascruggs]

Front sway bar / ARB bushes tend to go on these and make a clunk on bumps also

Sorry, not sure what the ARB bushings are. Also I check the sway bar and rack when the car was lifted the other day so don't think its the sway bar. but i could be wrong, I have been wrong before a few times.

 

[ThaiFiesta]

Sorry, not sure what the ARB bushings are. Also I check the sway bar and rack when the car was lifted the other day so don't think its the sway bar. but i could be wrong, I have been wrong before a few times.

ARB - anti-roll bar. Another term for sway bar.

Suspension top hat / bearings are also a source of “clunks” according to a UK site

 

[ascruggs]

ARB - anti-roll bar. Another term for sway bar.

Suspension top hat / bearings are also a source of “clunks” according to a UK site

My car has just over 20k on it, wouldn't think it would be the top hat / bearing but I'm not sure. Driving into work today it didn't make a peep, other days it sounds like the RMM is falling off.

 

[M-Sport fan]

I take for granted that you already thoroughly checked the other engine/transaxle mounts besides the RMM, correct?

 

[draxxus131]

Check the passenger side motor mount. The bolt is known to sheer, mine did even though I baby my car around town. A simple jaunt onto the freeway has been known to break the main bolt.

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[LaserWhisperer]

+1 for pass mount

 

[ascruggs]

Check the passenger side motor mount. The bolt is known to sheer, mine did even though I baby my car around town. A simple jaunt onto the freeway has been known to break the main bolt.

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I only check the RMM because the noise sounds like its under the car, but i will check the passenger side mount tonight. Thanks for the input!