My 84 300D is doing some peculiar things. First, only one windshield wiper works (the driver side, thankfully). The passenger side wiper moves only slightly. Second, when I start my engine (after the glow plug light goes out) my one working wiper wipes once. Whats up with that?

Passenger side linkage maybe disconnected. As to why it cycles once when you start the car, I would check the wiper lever, especially where it goes into the steering wheel.

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1985 300 D T - Rauchsilber (Smoke Sliver Metallic) with MB Tex Quartz 155 = Cream interior - 320K and counting!

1999 E300 TD - Silver - Just got her 3-13-15 !

the 2nd '83 300SD - Brown Metallic - traded away

1985 Limo Diesel aka "Stretchy" - Sliver - Blue Int - Sold but still in Athens

1983 300SD - Brown Metallic - Sold April 2008

1982 300 D T - Royal Blue with Tan interior - Sold

thought I would bump this up to the top..I am having what sounds like the same problem with my passenger side windshield wiper. Anyone have any insights, thanks

Pull off the plastic air intake grilles, you'll see the motor and linkages to both wipers under there. One of the joints on my driver side linkage just fell apart one rainy afternoon, it wasn't fun. New linkage and all is well.

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1985 300D, 237k.
1994 F-350, 6.9 diesel, 5 spd manual, Banks Turbo. 261k.
Sold: 1985 300CD- 267K

Also see if you can mmake the non working wiper sweep the windshield with your hand. If you can, check the tightness where the arm is attached to the post, and also check your linkage like advised earlier.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Raise the right wiper arm up till it stays up. Lift off the black plastic cover where the arm attaches at the cowl. Tighten the nut on the shaft! I think its a 12 mm or 10mm. If the arm just falls over because its so loose then lower it and align the wiper blade to the base of the windshield then tighten nut.

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81 300CD (sold) 1972 280 SEL 4.5 (sold) 1966 250 S 4 spd (sold) 1974 450 SL (sold) 86 BMW 325ES (sold), 1973 280C (sold) 1988 300 SE.