Re: Burrrrrrrrrr-no heat! 1987 300E

Could be a few things, but my first guess would be that the monovalve
has failed. This is the electrically controlled valve that controls
whether or not coolant flows through the heater core. I jsut replaced
mine in my 82 300 TDT this fall and it made the heat work a lot better.

I had put in rebuild kits in my old valve in the past, and that sort of
fixed the problem, but with the new one the fine control that lets you
ride along with the temperature steady has returned. It was $80 or
something more than just the kit, but well worth it in the increased
comfort in the car.

http://mercedes.thebenzbin.com/?year=1987&make=MB&imageField22222.x=33&imageField22222.y=10

Paul Fretheim
Independence, CA

We just set a record low temperature of 10 F the other night and it
feels like it will be at least as cold tonight!

papashey wrote:
:(
I have a 1987 mercedes 300E and my heat is not working. the engine
gets warm. my air works fine. the blower is fine. for some reason,
this winter, i can't get the heat to come on. it just blows cold, even
with the dial in the the red all the way to the dot. any suggestions
would be greatly appreciated. thanks! papashey

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