help, yesterday, A/C and everything worked. Today, no instruments, nor A/C work. Fuse blew, replaced and blew again.

I have no experience in a lot of electrical testing, but if this is a known problem for the 1981 240d’s , I hope someone would shed some easy fixes for me.

Bob

sounds like a short. or could possibly be a locked up blower motor.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

yesterday all I had on hand were american type fuses. Put a new 5A in, and it blew.

today, on the way home purchased some german 5A and 8A and some 'red' ones. put the german 5A in, and now everything works.

why?

More than likely its your blower motor for the AC/Heat system going bad. They tend to blow fuses as the get bad. If it blows again, disconnect your blower motor and try another fuse. If it still blows. Let us know. If it does not blow drive it for a while and test it. If it is OK then reconnect it and see what happens. If it blows after connecting the fan then you should replace the brushes and check the bearings.

Dave

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1970 220D, owned 1980-1990
1980 240D, owned 1990-1992
1982 300TD, owned 1992-1993
1986 300SDL, owned 1993-2004
1999 E300, owned 1999-2003
1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD
1988 560SL, 100,000mi, owned since 1995
1965 Mustang Fastback Mileage Unknown(My sons)
1983 240D, 176,000mi (My daughers) owned since 2004
2007 Honda Accord EX-L I4 auto, the new daily driver
1985 300D 264,000mi Son's new daily driver.(sold)
2008 Hyundai Tiberon. Daughters new car