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#1
09-01-2004, 03:53 PM
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Climate Control not functional after new 617 engine
I recently put in a "new" engine on my 300D. The climate control always worked fine including AC before this and now the fan doesn't even turn on. The connection in the back of the climate control unit is tight.
I was hoping someone might suggest a place to start looking for the problem (I checked the fuses first). Also, the two wire (red & blue) connection to the AC compressor is different on the engine. Could anyone tell me (if I am looking down at the compressor) which wire would be above the other; red or blue? Hope that makes some sense.. Will Sanderson 1982 300D Turbo 270k SVO/Hydrogen Injection 1980 Scout II (TD) 107k SVO 
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#2
09-06-2004, 08:24 PM
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I guess climate control threads are not very popular, so this one dropped like a brick to page 4 with no replies.
Dont have auto cc on my primitive 240D, but can suggest that many electrical problems end up being based on poor ground connections, that's the best that I can offer. Btw, congratulations on your successful engine swap!
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#3
09-06-2004, 08:53 PM
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Hmmm
#1. Check grounds engine to body.
#2. Check vacuum routing. #3. Check power and ground at A/C compressor. #4. Check heater pump, if it blew, the controller may be toast. #5. Check all wires that where disconnected have been reconnected. #6. Replace all fuses with new, even if they look good. #7. Check all wires that where disconnected have been reconnected. Now you are ready to start diagnosing the real problem.  Sounds like it will be something simple.
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ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/
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#4
09-06-2004, 09:46 PM
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Make sure you have good fuses and that you didn't fail to connect something. I'm not sure where all the wiring is on the W123, but it's very possible you pulled something loose while changing the engine.
Peter
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1972 220D ?? miles 1988 300E 200,012 1987 300D Turbo killed 9/25/07, 275,000 miles 1985 Volvo 740 GLE Turobodiesel 218,000 1972 280 SE 4.5 165, 000 - It runs!
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