Greetings All,

Just thought I would share this with ya’ll.

The bane of our W123’s seems to be the ACC. Duh!!! Of course, mine is not working correctly. Here is what I did to get good heat and A/C. If the temperature control amplifier (behind the glove box) is unplugged, my ACC head will control the heat and fan speed. I placed a switch on my compressor so that I can turn it off when not needed.

Now that I need my A/C, I turn the switch back on, on the compressor and I put a valve in my hot water heater line so that I can stop the flow of hot water through the heater core. Soooooooooooooooo, for $10 bucks for the valve and an old toggle switch, I can control the heat and cold in my car.

It ain’t perfect, but it does the job. Recap: switch on A/C compressor to turn off power to it, disconnect the temperature control amplifier, put a water shutoff valve in the heater hot water input line.

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Wayne

the triumph of evil requires only that good men stand by and do nothing

13 Audi A3 TDI, the Wife's!
85 190D 5 speed, 195,000 miles
75 Triumph TR 6 w/Toyota 5 speed
2000 Ford F-250 powerstroke
03 Ml500, 109000

...123's have a separate switch for the a/c compressor?

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Der Panzermann und Fraulein Fahrvergnuegen

1991 420SEL 201K "The Big Blue One"
1985 300DT 205K chassis/285K engine nee California emissions "Goldbug"
1983 300TDT 255K "The Womble"
1983 300 DT 214K "Sea Sprite"-Rear-ended a truck
1983 300SD 285K "The Donor" Gave his life so that others can live
1980 500SL Euro 105K "Der Panzer"

File this one under "One step closer to the junkyard."

It's ok, really, we need the parts cars.

Let's see, pull and resolder CCU Control Panel: Labor 1.5 hr. Parts $0

I don't see where "rigging" up a switch is cheaper. Even the diaphrams are very inexpensive. www.autoluxmb.com

Have you done any testing with a mightyvac? It's actually a very nice operating system once a few minor, inexpensive repairs are made.

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Sam

84 300SD 350K+ miles ( Blue Belle )

LOL.........science teacher, thinks too much

Danny

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1984 300SD Turbo Diesel 150,000 miles

OBK member #23

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Yeah, how would you like to be the next owner and have to straighten out this mess. There's nothing worse than a car that's been owned my Mr. Wizard.