1996 LS400 123000 MILES I HEAR THUMPING NOISE ...

  • Tiny
  • Anonymous
  • 1996 LEXUS LS 400
  • 123,000 MILES

1996 LS400, 123,000 miles - I hear thumping noise from the front right side of the car only when I go over a small bump, either while turning on to my drive way (over a small lip above the road surface) or other small road humps. I have replaced both the front struts, strut mounts, lower control arm. Upper link arm. My auto mechanic could not locate the problem. Can you help diagnose the part(s) that need to be looked at for replacing them.

Saturday, October 27th, 2012 AT 3:38 PM

2 Replies

  • Tiny
  • KHLow2008
  • EXPERT
  • 41,983 POSTS

Quite often noises as per symptom description are not from the struts.

The sway bar bushes and links are more likely to be the cause. If the noise is more of a rattle, the steering rack and its linkages are likely to be the cause. Have them checked.

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Saturday, October 27th, 2012 AT 4:02 PM
  • Tiny
  • Rivermikerat
  • MEMBER

You might also want to check the ball joint. Make sure the rack and pinion mounts are secure as well.

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Wednesday, October 31st, 2012 AT 11:29 PM

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