Noise,


Noise on W123's is been a hot issue for a long time. First, these cars WERE not loud new. Only anoiance at highway speeds suggest deterioration in weatherstripping, firewall seals, and engine insulation.

My car, there was a very small tear in the floor board and it made the drivers side hugely noisy- drop of sealant and it's quiter. Every hole in the firewall has a seal. AC lines, gas pedal, speedometer cable, wiring, oil pressure line. If you start digging around, I bet some or all of these have deteriorated. You can replace them or some people use some silicone to seal them.


You can email me directly, I've done some of this to several cars.

Michael

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Michael McGuire
83 300d
01 vw A4 TDI
66 Chevy Corsa
68 GMC V6 w/oD
86 300E