Just went to an awesome snowboarding trip, when realized that my car has no heat.
All day we were freezing in the car with just warmish air coming in.
When temperature knob set to max heat, the air comes cold, when defrost button pushed, cold or just warmish air, when the temp knob set to half way heat, warm air start coming in.
Any ideas?
thanks guys

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1987 300SDL
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Pic of this car:
http://www.gigapipe.net/300SDL/index.htm

mono valve

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82 300D....went to MB heaven
90 350 SDL....excercising con rods

How do I check/replace that?
Thank you

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1987 300SDL
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Pic of this car:
http://www.gigapipe.net/300SDL/index.htm

Passenger side of firewall. Four flat head screws. There is a rubber diaphragm that usually rips.

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

What was your water temperature?? If it was under 80C he thermostat could be the problem.

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All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic