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MikeHarrison 02-06-2021 12:10 PM

Occasional left-front knock sound
There's no play in my steering, no steady friction noise, just an occasional knock from the left-front, usually when going over a bump (such as a recessed manhole cover). I'm guessing ball joints?

If so, what would a replacement cost estimate (typical range) be? And, should all of them be replaced at the same time?

Bill Murray 02-06-2021 05:54 PM

Re: Occasional left-front knock sound
Best to get it up on a lift where you and/or a tech can take a close look.

The 07 Ion I purchased last year had a random problem like this and it turned out to be the brake pads. Whenever the previous pads were installed, someone had applied CRC "brake quiet" liquid damping material that's supposed to go on the BACK face of the pads on the tabs where the pads slide in the caliper. This kept the pads from moving properly, getting hung up in the caliper and randomly making noise.

Deathjam4 02-09-2021 10:40 AM

Re: Occasional left-front knock sound
The clunk is control arm bushing. They get worn out then bohnce enough that the control ar hits the body where the bushin is located. Mine in my 2007 have copletly sepersted so it thunks all the time. I have my parts but my bolts are toast so i been waiting fo replacments.

nickson 02-15-2021 03:41 AM

Re: Occasional left-front knock sound
Had the same experience and it was a ball joint problem.

ddemier7 02-27-2021 10:07 AM

Re: Occasional left-front knock sound
What was the noise?

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