Knocking or Bumpy noise from front suspension - 97 EB Expy

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Jan 1, 2009 | 09:57 AM

pcguy760

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Knocking or Bumpy noise from front suspension - 97 EB Expy

While driving, I started to hear / feel this knocking / bumping sound coming from somewhere in the front suspension. It gets louder at lower speeds (less than 30 mph) but I can barely hear or feel it at 60mph. The knocking also stops when I make turns but starts again when I am driving straight. Seems like it has got louder after a 15 miles journey too.

What do you guys think it might be?

Thanks,

Mo

Jan 1, 2009 | 11:55 AM

alloro

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From: 0,0,1

A worn front axle CV joint would be my best guess.

Jan 1, 2009 | 12:47 PM

pcguy760

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Hmmm - I thought a bad axle would do that while turning also? It does not knock while turning...wierd.

Jan 1, 2009 | 09:24 PM

WALJON

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From: THUNDER BAY

I would check out your front torsion bars I had one break and it did the same thing.

Jan 1, 2009 | 10:51 PM

Gevans17

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mine was due to both front shocks were broken where they attach to the lover control arm.

Jan 2, 2009 | 10:33 AM

Icefan71

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From: Central PA

I had a broken sway bar link that caused a knocking sound like you described.

Jan 2, 2009 | 11:55 AM

alloro

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From: 0,0,1

Quote:

Originally Posted by pcguy760

Hmmm - I thought a bad axle would do that while turning also? It does not knock while turning...wierd.

Just the opposite. While turning, you are putting more of a load on the CV joint causing any slack within the joint to be taken up. The joints are at their loosest when they are straight.

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Jan 2, 2009 | 05:00 PM

pcguy760

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Well I just checked everything under the front suspension and everything appears to be in good condition. Nothing looked broken. As for the axles, both "appeared" to be normal...

I took it out for a drive and the noise was gone for about 1 minute and then it came back for good. I am no expert at suspension stuff - any ideas what else I should do or check? Thanks!

Mo

Jan 2, 2009 | 05:59 PM

#10

FOUNTAIN 1

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From: wi

Check youre bumper , just a thought

Jan 2, 2009 | 07:52 PM

#11

Oldtrucknut7077

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From: PA

Probably wouldn't hurt to have the alignment checked. A good trustworthy place should be able to find whats loose.
Doesn't hurt to just crawl around the engine compartment and underneath grabbing stuff looking for a loose part. Good luck