Sometimes when I start to drive my car the speedo needle goes from running ok to jumping all over the place. Afer a while, or if I slow down to under 10 mph, it goes back to being ok again. Please help, again, and thanks in anticipation.

christopher,

My 1986 190E 2.3-16 has done that for the last 10 years every winter. I think something inside must wear to the point that there is an instability like a half frequency whirl in a fluid film bearing. Anyway, once my car warms up the problem goes away. I figured trying to fix it might make it worse, so I elected to leave it alone and turn the heat up a little until it goes away. It is a pretty nasty snapping around, bouncing off the pegs at each end of the speed range. If it breaks it will force me to fix it. It actually seems to be getting better, meaning it has to be really cold to happen now, and it responds quickly to the heat. I will watch this thread to see what the recommended course of action ends up being. Good Luck, Jim

__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)