Sixto has a point . . . metal wear and corrosion in the key switch could cause poor contact. That switch is not very expensive, less than $50, IIRC.

Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

I should note that my blower motor was chirping today before all this started happening, right after I started the car and the AC in fact. It went away quickly and I didn't think anything of it, until mention of a shorting blower motor.

Hi folks

and what to do if the tacho signal is only 1.9V square measure behind the Cockpit rpm plug under load as well as on the dianoses connector. same car 1995 E300TD non AC

BR
Bob

The manual tells that you should be seeing about 3 volts at idle speed - 1.9 is a bit low, have you tried cleaning out the sensor - its on the transmission bellhousing.

btw is your tach inoperative?

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)