Clank/clunk when braking and accelerating

Clank/clunk when braking and accelerating

Postby Sharkey51 [OP] » October 5th 2016, 5:56am

Hello, new to the site. Ton of good info here so thanks everyone!

Hoping for some feedback on a problem...

Can't figure out where a clank sound(metal on metal type) is coming from. I've had it for a while now. It only happens when first braking hardish while going slowish and when accelerating a bit fast from a stop. Like with forward g force and backward g force. Feels/sounds like it's coming from under my feet behind/beside driver front wheel well. Not too loud but noticeable and unpleasant. Don't hear it when going over bumps, turning hard or turning hard over bumps. With the front on jacks my wheels, steering and suspension components feel pretty solid. Checked the caliper for play, that felt solid too. Recently put on 2" body lift with pucks, new subframe bushings and bolts torqued to spec, so that should be solid. Can't figure it out? Any suggestions would be much appreciated! Thanks.
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Re: Clank/clunk when braking and accelerating

Postby Ksmith » October 5th 2016, 11:28am

I had a similar issue with my '96... I had the front shocks replaced and the mechanic hadn't tightened the shock mounts... that was it, simple fix, just tighten up 1 mount and it was done.

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Re: Clank/clunk when braking and accelerating

Postby Sharkey51 [OP] » October 5th 2016, 3:35pm

Hmm, I put new shocks in a while ago, had a little trouble getting the top nuts tight. Thought they were good in the end, but maybe not? I'll check that out... Thanks.
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Re: Clank/clunk when braking and accelerating

Postby TurnNburn » October 5th 2016, 6:12pm

Motor mounts and transmission mount are also worth checking out. can you make that noise happen if you do a brake stand while stationary? Or do you have to be moving?
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Re: Clank/clunk when braking and accelerating

Postby Mmusicman » October 5th 2016, 7:55pm

Oddly, I've had ball joints do this
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Re: Clank/clunk when braking and accelerating

Postby Sharkey51 [OP] » October 5th 2016, 10:33pm

Thanks for the response.
Checked/tightened shock mounts, motor mounts and
transmission mount. Doesn't make the sound with brake stand. Can make sound easy by going forward slowly and hitting the brakes and then backward slowly and hitting the brakes. Sometimes it's a single and sometimes a double clunk/clank. Feels like it's right under my feet. Was thinking it had to be brake related but I double checked calipers and pads for any play. While I had it up I rechecked for any play in the steering and suspension.
Could the ball joints feel solid by hand but still have play when driving?
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Re: Clank/clunk when braking and accelerating

Postby Sharkey51 [OP] » October 7th 2016, 3:35am

Okay I'm an idiot!
It was my subframe bolts. Just put new bushings and bolts in recently and torqued them to spec. Thinking back, there was no clunks for a couple days and then it came back. Guess before it was the spent bushings and then the loose new bolts. Not sure how they came loose or if the bushings just settled down some? I'll have to keep an eye on them.
Oh well, at least I thoroughly checked every other bushing and ball joint and they look good.
Thanks for the input!
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Re: Clank/clunk when braking and accelerating

Postby TurnNburn » October 7th 2016, 4:56am

Yeah that's pretty common for bushings to settle. Even metal can "relax".. Good advice for any one doing there own work, especially when lifting(or lowering), to recheck all of there work after a hundred miles or so.
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