Loud Clank from the Front end... - Toyota FJ Cruiser Forum
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#1 (permalink) Old 12-21-2008, 04:36 PM
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Loud Clank from the Front end...

I have a 3" leveling made by RevTek. Ever since putting it on, I have been getting a loud "THUNK" or "CLUNK" noise from the front end. This usually happens when I back up, turn the wheel, and apply the brakes (backing out of a parking space), or when I am pulling up to a stop sign going down a hill.

It only happens once per drive, but as soon as I put the truck in park and then back up, we are at it again. The Toyota Dealership who installed it has looked and looked for the cause of the problem and we cannot find anything. We have tightened and torqued everything we can find that is not supposed to move, and greased/lubed everything that should.

All I know is that prior to the lift, no unhealthy CLUNK, and now, it sounds like there is some serious metal fatigue going on in there. I can feel it in the gas pedal (if I am turing onto my driveway) the brake pedal, and the steering wheel.

Has anyone else had this problem? I hate it, but if it keeps up I am really thinking about dropping it back down and downsizing tires...I cant help but think that there is really really wrong down there!

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Last edited by ArmyMedic; 12-21-2008 at 04:48 PM.
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#2 (permalink) Old 12-21-2008, 04:57 PM
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Re: Loud Clank from the Front end...

If you have larger tires might be hitting the body mount. Had the revtek since 2006 and no problem just loose bolts on top at the beginning.Try caliing them if Randy is still there you should get an anwser. They run the kits on their trucks and the trail team too.
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#3 (permalink) Old 12-21-2008, 05:23 PM
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Re: Loud Clank from the Front end...

Quote:
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If you have larger tires might be hitting the body mount.
Thought about that so I took a silver paint marker and drew all over the body mounts on both sides. No rubbing

Just found a bunch of stuff on lower control arm bushings...makes me go HMMMMMM

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#4 (permalink) Old 12-21-2008, 05:59 PM
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Re: Loud Clank from the Front end...

Could it be the brakes? Seaarch on brake noise.

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#5 (permalink) Old 12-21-2008, 06:02 PM
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Re: Loud Clank from the Front end...

It's normal. I have checked everything on mine 50 times and got tons of suggestions from tons of people, still havn't found out what it is.

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#6 (permalink) Old 12-21-2008, 06:03 PM
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Re: Loud Clank from the Front end...

The brakes can make noise and a bad ball joint too check your rubber boots had one busted it jams once you start driving seams ok.
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#7 (permalink) Old 12-21-2008, 06:43 PM
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Re: Loud Clank from the Front end...

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Could it be the brakes? Seaarch on brake noise.
X's 2 on that. Whenever I would get into the FJ first thing in the morning, or leaving from work, (after it has been sitting for a while) the brakes would squeek whenever I backed up, and as soon as I applied the brakes I would hear the "thunk" nosie your talking about. Not sure if this is what your problem is or not, but I took mine to the dealer recently after searching this site and finding that it was a tsb issue, and they fixed the brakes under warranty.....no more "thunk noise" after that either

Last edited by TxFj85; 12-21-2008 at 06:47 PM.
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#8 (permalink) Old 12-22-2008, 08:11 AM
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Re: Loud Clank from the Front end...

Check the clearance of your sway bar links on each side. It's entirely possible that the dealership removed the sway bar during the install and re-installed it slightly offset (with one side closer to the coil spring than the other).

It could be something as simple as re-aligning the sway bar and preventing contact of a link end striking the coil spring (or cup on the bottom of the coil)...

Edit: Here's another source (that happened to me): Check the bottom of the shock, where it attaches to the lower control arm. When I had the coil springs compressed to attach the upper cap on the shock, the shop that did the clocking of the top plate turned the shock slightly, so that the shock sat just a tad angled in the slot in the lower control arm. Even with the bolt tightened, I'm sure it was shifting slightly when compressed. Eventually my 'clunking' went away, after I re-tightened the lower shock bolt. Anyway, just throwing possible causes out there for elimination...

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#9 (permalink) Old 12-22-2008, 08:37 AM
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Re: Loud Clank from the Front end...

I am hearing the same noise, I found that my lower a-arm bushing are on their way out thus causing more movement than there should be.

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#10 (permalink) Old 12-22-2008, 11:29 AM
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Re: Loud Clank from the Front end...

Quote:
Karpi71 previously said: View Post
I am hearing the same noise, I found that my lower a-arm bushing are on their way out thus causing more movement than there should be.
Thats where I'm gonna check next, one of the SoCalers just had to have his replaced cause they were shot, they replaced em with stronger aftermarket bushings that are supposedly gonna last longer.

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Yup thieves are stupid, that's why they are thieves.
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