2001 Ford Explorer clunk during turns, especially inclines or bumps

Question

I have an early-model (it has 2000 model brakes) 2001 Ford Explorer that demonstrates a noticeable (tactile and somewhat loud) clunk occasionally during turns.

It seems to be much more likely when the turns involve bumps or inclines/declines.  
I can consistently reproduce the problem by pulling into my driveway at moderate speeds (a 90 degree left turn and a reasonable decline from street level)
I can consistently prevent the sound by slowing down and taking the turn much more gently.
I will have to check my records, but I believe I have had the U-joints replaced about six months ago, due to vibration at highway speeds which was fixed by the replacement.

What could be causing this clunk?

Kevin L. · Accepted Answer

Upon examination it became immediately obvious what the issue was; the front passenger sway bar link had snapped off at the top, losing its head and both top bushings. The clunk was presumably caused by the remnants of the sway bar link (still attached to the lower control arm) impacting the sway bar during turns with bumps or inclines.

A replacement sway bar link solved the issue completely.

PearsonArtPhoto · Answer

Most of the time when you have a clunking sound when turning, it means one of two things.

The power steering fluid is low.
The alignment is out of whack.

Buy some power steering fluid and pour it into the correct spot. If the problem goes away, you're done. If it doesn't, check the alignment.

Troggy · Answer

Other than what has been mentioned, the other part I would check out is your CV Axles. Check the boots at both ends for cracks or any grease leaking out. If they start leaking and lose the grease, they can start making continuous noise or show up when making turns.

If they have cracked, the grease can make a mess if it has been driven long on them.

kkeilman · Answer

Ball Joints.

The clunking you describe is symptom of them being worn out.

It's a known service item on Exploders.  All ball joints wear/fail eventually, it just seems the Explorer goes through them quicker than others.

paul wie------- · Answer

In a tight turn the steering knuckle is pushing on the steering stop and any vertical motion of the body could create a thumping or squeaking noise as the knuckle rubs against the stop.

2001 Ford Explorer clunk during turns, especially inclines or bumps

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