Greetings all,
I have aquired a rather nice 300CD but have fought with the climate control system from the beginning. The car is equipped with the archaic Chrysler servo system but it does have the GM R-4 compressor. I am at the point I am ready for a change. I have access to a 1981 300d that has the Mercedes style ACC system and was wondering has anyone ever converted a Chrysler style setup to the better Mercedes setup. I realize that it would involve a lot of wiring changes and possibly even an evaporator case change but I feel that the work would be welcomed with a properly functioning climate control system. I have considered replacing the servo and the amplifier but the cost is so great that I can buy an entire junk car cheaper. Any other ideas on getting this thing to work again without spending a heapof money? Winter is approaching and heat would be great.

Aaron

I have a 78 and replaced the servo with one of the metal bodied ones so it won't fail again. The CC has been fine since and I think in the long run is better than putting in a later model CCU with it's own list of failings. If you can't swap in a manual system from a 240D then fix your existing one with the metal servo for $600.

John

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John Hughes, was in Landstuhl, Germany but currently in San Antonio, TX


1978 280CE Astral Silver now 59,xxx miles and counting "Silber-Kugel"
1986 300E Black Pearl Metallic 143,xxx miles 5-spd daily driver w/ blk leather "Schwarz-Schönheit"
1989 190E 2.6 (euro) 5-spd Desert Taupe 112,xxx kms Had to leave behind in Germany!!! "Helga"
1983 300D Pastel Beige now 312,xxx + miles SOLD

OBK#24

Thanks for the reply. I think i'm going to go ahead and bite the bullet and buy a reman servo and new amplifier for my ACC and see what happens. I have found that all the vacuum motors still work and the car is very much worth fixing as it is rust free and only has 176,000 miles on it. I could probably find a 240D in the salvage yard to rob all the manual parts from but I like the ACC feature if only it would work right. I beleive the servo I have is the alluminum housing type as the entire middle section of the thing is aluminum while the very bottom and the very top is black plastic. Anyone ever seen one of these?

Aaron

I replaced my servo with aluminum body, it works well. I discarded the amplifier, and used extra sunroof rocker switch in the switch panel to bump temperature up or down. Dead reliable.