Loud clunking noise

[andrewwynn]

Originally Posted by Maruzo

Hi Andrew, mine does not appear to have any crack or leak on both upper and lower rubber. I also tried to move it by hand and found it pretty much fixed in position.



I will replace both all the same since it doesn’t look that difficult of a job and it’s one less likely culprit eliminated.



But I am really worried that I’ll activate the air compressor when I jack it up again. Last time I did that the compressor came on and tried to lower the car as I was pushing it up with the jack.



I also seem to have a faulty FRM module after unplugging the battery!

If your level sensors are working properly the self leveling system should deactivate when lifting off the ground. If you think about it when lifting the system would try to let air out to lower the car if you lift.

The rule with suspension joints is 19 times out of 20 you can't manipulate by hand to find loose joints. They make special 6' long testing bars you bolt onto the lug mounts to be able to test for loose ball joints. Once you can manipulate by hand they are long long gone.

I've replaced noisy sway bar links that didn't show wear they just taped Morse code. I was able to confirm with the tight tape wrap test but that only works on the top joint. I would try a hose clamp on the lower joint if it was suspect.

The noise is very distinct. I would be able to tell from a recording most likely. It will happen from very subtle road undulations and more noticeable at speeds closer to 15-20 mph.