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#1
08-16-2010, 01:53 PM
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Three questions, temperature 1984 300SD
1984 300 SD
1/ The switch on the thermostat housing is it normally open when cool 2/ At what temperature will it switch. 3/ Will it turn on the Aux fan when engine goes a higher than safe temperature. OK I lied, 4/ Does it have anything to do with the heating system.
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1984 300SD turbo 126 "My true love" God made me an atheist and who am I to question His wisdom Last edited by The Gears; 08-16-2010 at 05:24 PM. 
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#2
08-16-2010, 02:59 PM
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I was thinking name, quest, unladen velocity.
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CC: NSA All things are burning, know this and be released. 82 Benz 240 D, Kuan Yin 12 Ford Escape 4wd You're four times It's hard to more likely to concentrate on have an accident two things when you're on at the same time. a cell phone. www.kiva.org It's not like there's anything wrong with feeling good, is there?
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#3
08-16-2010, 03:03 PM
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Dont forget 'favourite colour', and..." is that an African or European Swallow? "
/Hijack
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85 300D 3 pedal. Current project. 83 300TD (need rear wiper assembly dead or alive) 84 300SD Daily driver 85 300TD almost 400k miles and driven daily. 98 E300D *sold 86 300SDL *sold and made flawless 10 hour journey to new home. 
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#4
08-17-2010, 12:19 AM
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Quote:
1) Correct. 2) 50°C.........IIRC 3) It does not run the auxiliary fan.........it runs the blower in the cabin.........prevents it from dumping very cold air on the driver and passenger. 4) Yes, it does.
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#5
08-17-2010, 01:01 AM
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Thanks Brian. I was hoping there was a way to get the Aux fan to kick in when the engine starts to get to 100c.
What are Moon161 and Renntag going on about?
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1984 300SD turbo 126 "My true love" God made me an atheist and who am I to question His wisdom
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#6
08-17-2010, 01:46 AM
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One option is to retrofit a red top aux fan switch with a 100*C setpoint from a 102 or 601 engine. Here is a 2-pole red top 100*C switch from a 102 engine -
http://catalog.peachparts.com/ShopByVehicle.epc?q=&yearid=1986@@1986&makeid=63@@MERCEDES+BENZ@@X&modelid=6127:ED|10000009:SM|846:MBC|1484@@190E+2.3&catid=240909@@Cooling+System&subcatid=241005@@Auxiliary+Fan+Switch&applicationid=W0133-1630156&mode=PA Here is a gray top 3-pole 105*C/120*C switch from an early 602 engine - http://catalog.peachparts.com/ShopByVehicle.epc?q=&yearid=1986@@1986&makeid=63@@MERCEDES+BENZ@@X&modelid=6127:ED|10000009:SM|846:MBC|1484@@190E+2.3&catid=240909@@Cooling+System&subcatid=241005@@Auxiliary+Fan+Switch&applicationid=W0133-1625972&mode=PA Fastlane doesn't list the red top 3-pole 100*C/105*C switch I pinched from a 601 at the yard. You must have been raised in a cave if you're not familiar with - http://www.youtube.com/watch?v=IMxWLuOFyZM#t=2m0s  Sixto 87 300D Last edited by sixto; 08-17-2010 at 01:59 AM.
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#7
08-17-2010, 10:23 AM
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The Gears, Watch "Monty Python's The Holy Grail " and you will get it.
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92 500E Silver 66k 82 Porsche 911SC 84K 68 Cadillac ( Gone Now ) 03 Suburban Z71 200K 85 300SD 217k From Original Owner ( Dad )
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#8
08-17-2010, 01:44 PM
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What? I don't know thaaaaatttttttt.....
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 560SL convertible 1987 190D 2.5-5SPEED!!!  1987 300TD 2005 Dodge Sprinter 2500 158"WB 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#9
08-18-2010, 12:40 AM
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Thanks for the switch info Sixto.
OK I get it "3 questions" Ha Ha! When I was growing up Monty what ever his name is had not been invented. I will change to a 100c temp switch, run a wire from it over to the connection for the AC temp switch. The AC temp switch will function as designed. I think. As for the cabin heater I will permanently ground the original heater line to tell the cabin heater the temp is up and can turn on the blower. Hope this all works.
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1984 300SD turbo 126 "My true love" God made me an atheist and who am I to question His wisdom
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