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#1
10-03-2004, 02:03 AM
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popping noise coming from steering wheel...
I am speaking of my 1979 300SD. I first noticed this about a month ago. When I am sitting still and turn the wheel, there was a "pop" noise that came from under the hood it seemed. Now, it has gotten much worse. When driving down the road, if I hit the smallest bump, I hear a pop in the steering wheel itself. Also, I don;'t know if I'm just noticing this recently, but when driving, if I let go of the wheel, it slightly rocks back and forth. Is it suppose to do that? It isn't in real substantial amounts, and it stops if you hold onto the wheel. Does anyone have any suggestions on things to look for? I do have quite a bit of play at the wheel. Would the pop noise have anything to do witht the play, or could the pop be from some sort of steering coupler or steering box/both?
Thanks David
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_____________________________________________ 2000 Honda Accord V6 137k miles 1972 300SEL 4.5 98k miles _____________________________________________ 
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#2
10-03-2004, 04:42 AM
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Educated guess:
Quote:
Please take it to an alignment shop for inspection.  Ask them to start by checking the Steering Cloumn Couplings.
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ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/
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#3
10-03-2004, 08:11 PM
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Look for my recent post on my cars steering. I had a bad tie rod end that made a clunking noise. I would sudjest replacing both tie rods and the center link, and rebuild the idler arm. It will make your steering so much better!
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1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200
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#4
10-03-2004, 09:17 PM
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Whole front-end was rebuilt within the past 6 months. It included tie-rods, b/joints, idler arm, etc. The whole bit.
Thanks David
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_____________________________________________ 2000 Honda Accord V6 137k miles 1972 300SEL 4.5 98k miles _____________________________________________
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#5
10-03-2004, 10:28 PM
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Listen to whunter it's the steering column couplings. They are kind of like miniature flex discs, and when they deteriorate you get metal to metal contact that makes that popping sound. My old 79 SD did the same thing when I bought it. If you keep on going like that, soon your steering wheel won't be connected to anything.
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TXBill Former owner of a few diesel MB cars 1998 Lexus ES 300 In Chicago We Trust
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#6
10-03-2004, 10:45 PM
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So it it the steering coupler that fastlane has listed for $120? Or maybe it was $114, as if that much of a different mattered. Would this get rid of much steering play? It is difficult to replace? How about alignment issues, or just aligning the steering wheel with the tires?
Thanks David
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_____________________________________________ 2000 Honda Accord V6 137k miles 1972 300SEL 4.5 98k miles _____________________________________________
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#7
10-04-2004, 08:37 AM
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Hmmm, answers
Hello David
FastLane 1979 Mercedes Benz 300SD Part: Steering Coupling Price: $132.80 Hmmm,failure to replace it will kill you and/or others.... It is a knuckle buster, but very simple. This should get rid of most of your steering play. This is one steering part where wheel alignment is not needed, unless the wheel being cocked bothers you. Last edited by whunter; 10-06-2004 at 01:23 AM.
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#8
05-30-2006, 05:21 PM
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take the advice given here please
Do inspect the steering coupler.. I get the same noise from my 1980 300sd w116. I just went through an entire front end rebuild, steering tie rods (entire assemblies), upper control arms, lower bushings, new shocks, new lower ball joints, etc., .. there isn't much that I didn't go through.. still had popping noise and sloppy steering...
Had my 6 year old sit in the seat and rock the steering wheel back and forth, I inspected from the top w/ flashlight and saw the 'almost failed' steering coupler. This is a very obvious fix (not so easy DIY so far). good luck.. and just to restate, IF I WERE YOU, I WOULD NOT BE DRIVING THE CAR AT THIS POINT.. IT COULD GO AT ANY POINT AND YOU'D BE PRAYING FOR A LEFT DRIFT WHILE YOUR CAR GOES OFF THE ROAD TO THE RIGHT....
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#9
05-30-2006, 08:07 PM
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Threads two years old, David sold that car awhile ago.
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1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200
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#10
05-30-2006, 08:48 PM
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Yes, but there's real educational value gained from resurrecting these threads for folks that weren't around two years ago, like me.
Bob '82 300D
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