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  #1  
Old 09-27-2020, 03:23 AM
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What is squeaking on my car?

(Edited now with new question since Shertex probably gave the correct answer that it's the ball joints. What's the best brand of ball joints to get? Advance Auto carries Moog).

For the first time ever, my car has been squeaking lately. When I turn the steering wheel, or go over a bump, or if the car is just sitting in the driveway and I push it up or down, there's a squeak. Lucky for me, when I was coming home last night it was getting worse just in the last mile or so where the speed limit is 25 mph. Especially when I was coasting to a stop, the car was limping, as though one tire were out of round (even though they're not), causing the car to go up/down slightly.

Is that necessarily the shocks or could it be other parts that move like sway bar or tie rods, etc.? I replaced the shocks about 8 years and 80,000 miles ago with Bilsteins. I doubt they'd wear out at just 8 years.

1991 300d 224k


Last edited by jbach36; 09-27-2020 at 11:49 AM.
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  #2  
Old 09-27-2020, 04:10 AM
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From your description most likely candidate is ball joints.
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  #3  
Old 09-27-2020, 11:31 AM
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Get a piece of Broomstick and put one end on the suspected part and the other at your ear or use a mechanics stethoscope. Have someone else do the pushing up and down on the fender. You will soon hear where the noise is coming from.
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Old 09-27-2020, 11:51 AM
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Shertex probably gave correct answer

After watching this video, this is exactly what my car sounds like....
https://www.youtube.com/watch?v=HfvIY9InKSA

If that's the case, what are the best brand of ball joints to get? Advanced carries Moog brand.
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  #5  
Old 09-27-2020, 12:07 PM
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If there is no wear when testing. A syringe with a larger needle and grease might be injected into the boot of the identified one. Heating the grease up will make it flow easier.


After a day or so if the squeak is gone. Recheck the ball joint for tightness. If all is well take some laquer thinner and clean off the injection point. A dab of silicone then will reseal the boot.


Remember to take the spring load off the ball joints before testing them for wear. Catching things early sometimes you can save them. Sometimes not.
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Old 09-27-2020, 12:26 PM
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Are the ball joints on a W124 a royal pain in the ass to change out? If not, I think I would just go ahead and replace them. Looking on Rock Auto, they have a plethora of them ranging from $2 to $22 each. Your call. I am all for repairing things rather then replacing, but in this case, I think I would replace if it is not a huge undertaking with this particular model.
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Old 09-27-2020, 01:55 PM
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A factor in some things I do. Is the pathetic quality of some replacement parts. If the original quality is available I tend to go for it.


Especially on front end parts. Parts built to sell rather than to have much serviceability or quality are very common today.
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Old 09-27-2020, 02:19 PM
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Lemforder would be a good choice. Kind of thing you might want to get from FCP Euro because of free lifetime replacement.
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06 E320 CDI "Benson", Platinum Blue, 187k mi, Stage 1 tune, tuned TCU
06 E320 CDI "Rutherford", Black, 160k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 138k mi, wastegate conversion

19 Honda CR-V EX 45k mi
Thirteen other MB's owned and sold
1961 Very Tolerant Wife
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  #9  
Old 09-27-2020, 02:49 PM
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I agree with both Barry and Shertex
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1998 Volvo S70 T5 Turbo 185K (kids)
1994 Ford F150 4WD 245K (wood getter)
1983 Mercedes 300D 369K (diesel commuter)
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Old 09-27-2020, 04:07 PM
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Quote:
Originally Posted by psaboic View Post
Are the ball joints on a W124 a royal pain in the ass to change out? If not, I think I would just go ahead and replace them. Looking on Rock Auto, they have a plethora of them ranging from $2 to $22 each. Your call. I am all for repairing things rather then replacing, but in this case, I think I would replace if it is not a huge undertaking with this particular model.
Lemforder Ball Joints are made in Germany and reasonably priced.
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  #11  
Old 09-28-2020, 02:40 AM
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I have had good luck with Moog. repackaged Lemforder and Corteco typically. Depends on the part.


I would spray the suspension springs with silicone before doing any work. Its often just the springs rubbing against the rubber cushions on the body side.

If the sound stops... you've found your culprit... but if not, then the other messages are correct.

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