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Premium Member
2008 Forester XT Sports
1,705 Posts
Discussion Starter · #1 · (Edited)
Lately I have been hearing a clunk coming from my front end under heavy acceleration or deceleration. If the clunk happens under braking then I can't get it to make the sound again until I accelerate hard as it seems to be something that is shifting location. Any ideas? My car is factory with 30k on the clock. I am also going to drop it off at the dealer and see what they say.

I really want to get this taken care of under warranty before I do my suspension upgrades.

While driving my car this morning it seems that the clunk when under deceleration only happens when I downshift and allow the engine to slow me, doesn't seem to happen if I just get on the brakes.

2002 WRX
136 Posts
It took me forever to figure out my front end clunk and other associated noises, so here's the list of things to check:

- Sway bar is in the proper orientation
- Sway bar bushings are in good shape (there is a TSB for new ones, also some people grease them)
- Sway bar endlinks are tight and not bent or damaged
- Outer tie rods are OK (jack up the car and wiggle them / look for damage)
- Ball joints are OK (jack up the car and wiggle the wheel)
- CV joints are OK (not sure how to check this)
- Strut top mounts and their bearings can make clunking noises
- Struts can clunk, I don't understand the mechanism for this, but it is common for STI takeoffs
- All your lug nuts are tight (no brainer)
- Front control arm rear bushings are OK (evidently cause a clunk when braking)
- Assorted brake parts are tight and not damaged
- Check for signs of interference between anything that moves
- Engine and transmission mounts are tight and in good condition (I was missing an engine mount nut)
- Steering rack bushings are in good shape, not torn, and brackets are tight

I think that covers everything I went through before I found the loose engine mount nut.
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