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My 2001 Mercedes S430 squeaks when I turn the steering wheel and when I go over bumps. What could this be. I checked the power steering fluid reservoir and its full.

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6ya6ya
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Posted on Jan 02, 2017

dgjtex
  • 405 Answers

SOURCE: 1997 pontiac grand prix gtp power steering

I had this exact car and I had all the same problems your talking about, The pump although I can't tell you for sure is on the left side of the engine as your looking at it. If it is whining it is because it is low on fluid, also when topping it off fill it to the full mark while it is running. If it is foamy turn the steering wheel all the way left and all the right a few time to help get rid of the air. You may have to let it sit a while to let the bubble escape, check and do this again, it could be a bad pump also. The overheating problem I had with mine was a bad temp sensor for the computer. It has two temp guages and the computer uses on to activate the fan as needed. I also had another problem with mine, on the front of the intake is a small plastic elbow for a heater hose and this goes bad. Had to replace mine. Wasn't hard, and the part was cheap. Hope this helps you!

Posted on Jan 07, 2009

  • 6982 Answers

SOURCE: steering wheel squeaking

they do that sometimes...Usually if you take some silicone spray and squirt it all around the area where you can hear the squeak,it will go away.

Posted on Mar 20, 2009

  • 2 Answers

SOURCE: squeaking noise in steering wheel

check your CV joint

Posted on Mar 30, 2009

jmgldsmth
  • 1869 Answers

SOURCE: abs sensor light won't go out after brakes been replace s430 2001

if you can; return to your dealer as i can not be sure on this site if your wheel sensors have been damaged or, misadjusted or, if the strobe plates have oil or, grease on them and can not reflect
I assume that you have reset the abs module

Posted on Apr 28, 2009

appman67
  • 33 Answers

SOURCE: S430 Mercedes - Front end shaking at 55+

It sounds like you have either a broken steel belt in your tire or a worn out idler arm in your steering assembly. Other causes may be a bent wheel, a flat spot on the tire or worst case your brake rotor / wheel hub may be loose. If the rotor / wheel hub is loose you may have severly damaged wheel bearings. Good luck...

Posted on May 03, 2009

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1 Answer

S430 2002 is making noise when steer left or right, but goes away what could it be?


If its a groaning noise and its worse when cold it might be the power steering fluid is low, as the vehicle warms up the level rises and the pump stops sucking air, check the power steering fluid first

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My 94 mercury grand marquis makes a very loud squeaking noise when i turn the steering wheel or hit a bump, it sounds like its coming from the passenger front.


There are several possibilities that could be causing your problem.
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  • Bad steering box
  • Bad tie rod end
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Assuming the power steering fluid is full, bring the car to any brake shop or repair shop that does front end alignments to diagnose the problem further. I hope you find this points you in the right direction. Thank you for using Fixya! Greg

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Is most likely make noisy from ball joint please check both front lower and upper boll joint and replace one which is faulty one. is this information helped you?

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1 Answer

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You need some power steering fluid. Fill to line markers on power fluid tank while car is off. Start car turn steering wheel all the way to the left then all the way to the right until squealling stops.If it does not stop check fluid level and if it needs add more.Put a cardboard box flat under the car to check for leaks. If no leaks continue filling to line marker until squealing stops.

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