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Strange knocking sound, left front V70-XC70 2002

Been living with a strange knock in the driver's side front. We (Dealer and I) starting to get frustrated. Here's the scoop.

When going over sharp bumps particularly when turning right (loading the left side) there is sharp knocking sound from the left front side.
The dealer cannot locate it. We have managed to eliminate:
Sway bar links
Tie rod ends
Shock tower bushings
Left Front shock - replaced it with a new one - no change
Wheel bearings
Any and all suspension parts - it is tight.

We have started to pull off front bumper cover and poke around for loose components but no luck yet.

Any suggestions?

2002 V70 2.4 116,000km Other than this irritant, flawless performance so far.








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Strange knocking sound, left front V70-XC70 2002

*Update*

Had it back to my dealer. Gave them some suggestions from Brickboard and also VVspy.
They checked those out but found that the coil spring rubs against it's bottom collar very slightly upon compression. Apparently the coil expands in diameter slightly causing it to contact a part of the collar mounting it to the bottom of the shock.
The fix was to bend a small portion of the collar out of the way. All is quiet now.

If you do a search on strange front end noises you will get at least 10 or so different causes. Here's #11!

Thanks for your advice.








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Strange knocking sound, left front V70-XC70 2002

Dirkster,

Mine turned out to be a broken top shock mount. It made a rattling noise going over bumps and in turns. Pop the hood; on the side where your noise is coming from see if you can turn the two-inch diameter rubber cap on the top of the shock by hand. If you can, I had mine replaced at an Indy shop for 125USD including labor. Good Luck!








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Strange knocking sound, left front V70-XC70 2002

I have the same problem coming from passenger side front end. I have replaced both sway bar links and all of my control arm bushings but the "thud" is still present. Have not investigated the shocks yet. All of the other components seem tight however.

V70 T5 2001








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Strange knocking sound, left front V70-XC70 2002

Try the rear insulators of the motor cradle / crossmember. They are like a cone rubber bush located behind the wheel against the chassis.








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Strange knocking sound, left front V70-XC70 1998

No suggestions, but I have the same issue. Hope someone has an answer for you.







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