The front passenger seat of my 1992 400e rattles whenever I accelerate past 40 mph. I had a mechanic check it out and he believed it was the seat belt. It went away for awhile but now it is back. When I put my arm around the passenger seat as though I hugging the passenger chair real tight the rattling stops. Somebody help me. It's driving me nuts...

If it is a rattle, and not a squeak it could be one of a few things. You can take off the seat back and see if there is a stray bolt or screw hitting something. Also there are some wires under the seat that should be kept in place with wire ties. They can rattle. Are your tires out of balance?? This will make any car rattle.

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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope :)
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Benzmac:
If it is a rattle, and not a squeak it could be one of a few things. You can take off the seat back and see if there is a stray bolt or screw hitting something. Also there are some wires under the seat that should be kept in place with wire ties. They can rattle. Are your tires out of balance?? This will make any car rattle.

<HR></BLOCKQUOTE>

Thanks for the information. Prior to getting your response I took a hand cloth folded it and placed it between the plastic base and leather on the left side of the front passenger seat. This stopped the rattling
noise. However, this is temporary and it doesn't look good but I have some temporary peace. I will take your advice about taking off the seat back (however, I am mechanically deficient, so I will be careful). If I can't figure it out I will take it to a certified MB mechanic.

Thanks for the information. Prior to getting your response I took a hand cloth folded it and placed it between the plastic base and leather on the left side of the front passenger seat. This stopped the rattling
noise. However, this is temporary and it doesn't look good but I have some temporary peace. I will take your advice about taking off the seat back (however, I am mechanically deficient, so I will be careful). If I can't figure it out I will take it to a certified MB mechanic.