I have a 1985 euro 300td with the three dial style climate controls. I bought the car this summer and the blower has not functioned since I bought it. I have not really investigated further, but found yesterday that if I have the fan switch turned on when I first turn the key to the glow plug position, the blower works. As soon as I turn the key further and actually start the car, the blower turns off and will not work anymore. Any ideas about what is going on here?
Thanks!
Shane

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1985 Euro 300TD Turbo

Bad key switch?

Sixto
87 300D

My 240d blower motor would not work. Checked all the fuses, no blown fuses. Removed blower and hooked it up to 12v and it worked great. Put it back in and replaced the fuse even though it looked good. The blower worked and has been working for 2 years now. Blower resistors could be shot .

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'83 240D 264k on 100% biodiesel/ 31mpg
83 300D 217K the $800 gem
'82 300D 267K the new WVO project car finished and driving for free
International tractor B275 on B100
Ford 555 backhoe on B100
Sargent 25 ton Rough Terrain crane on B50

If you have a tach, klima reads tach signal from ash can on fender on 300sd. Bad tach signal and no heat or air. With engine not running, suppose system goes to default and allows heater blower to run. Hope this helps.

Regards

Run-Em

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1983 300SD - SPARKY THE DIESEL
2004 Audi TT 3.2 Quattro Roadster
1999 SLK - aka - LIL RED
1956 Chevy Nomad - aka - REAL MAD
1940 Ford dbl dr. Deluxe - aka - ORANGE U GLAD
1998 Kawasaki Nomad bike --