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Anonymous Posted on May 08, 2017

My 1997 Lexus LS 400 makes a loud thunk in the right front suspension when hitting a pot hole or low spot in the road. The sound occurs most often when braking and/or turning left so that the weight o

My 1997 Lexus 400 makes a loud thunk in the right front suspension when hitting a pot hole speed bump or low spot in the road. The sound occurs most often when braking and/or turning left so that the weight of the car is moving toward the right front wheel. The sound also occurs more often with people in the back seat. Even hitting a deep pot hole at a very slow speed will cause the sound. I have recently had both lower ball joints and struts (front) replaced. Wet or dry days and high or low temperature seems to make no difference

5 Related Answers

Anonymous

  • 51 Answers
  • Posted on Oct 08, 2008

SOURCE: suspension groans when making a left turn

sometimes the noise is in the steering wheel the plastic is rubbing together causing that sound.

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Anonymous

  • 2559 Answers
  • Posted on Feb 04, 2009

SOURCE: Loud squeaking noise from front end wheel or axle area.

It can be from both the struts and any piece of frame or body that has a rubber mount.(most likely struts and A arms making the noise)


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scott

  • 532 Answers
  • Posted on May 08, 2009

SOURCE: problem with shaking tires

replace the idler arm that connects the steering linkage to the frame on the passengers side,heavy duty part is about$90.00

Anonymous

  • 7353 Answers
  • Posted on Nov 23, 2009

SOURCE: Front driver side suspension knock over bumps

See if you can bounce car and replicate the noise. If you can, you should be able to find it, and put your hand on it. Stabilizer bushing are a place to look, both at the lower a arm and on the frame. If you narrow it down to the strut, it will need to be replaced. The front trans mount also goes bad, try putting it in drive with your foot on the brake and give it some gas and see if the engine moves an excessive amount.

Anonymous

  • 855 Answers
  • Posted on Nov 25, 2009

SOURCE: front suspension rattles

It could be, but check shock bushings, control arm bushings, sway bar and brackets. There are anumber of things that can cause a rattle. The first thing to be done is jack the truck up mput it on stands and start checking before replaceing parts. Pay close attention to shocks bushings and anything rubber.

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Hello and welcome to FixYa!

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