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Old 02-14-2002, 11:54 PM
Ali Al-Chalabi's Avatar
Ali Al-Chalabi Ali Al-Chalabi is offline
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Join Date: Nov 2000
Location: Knoxville, TN
Posts: 1,837
Specs for my C280 are all exactly the same as tkamiya posted except for the aux fan control:

Low speed cuts in at 100C and off at 95C coolant temp or
Low speed cuts in at 16 bars and off at 13 bars refrigerant pressure

High speed cuts in at 115C and off at 107C coolant temp or
High speed cuts in at 20 bars and off at 17 bars refrigerant pressure.

So, for my car, they modified the aux fan so that it will run on high speed under high refrigerant pressure. They also added a low speed cut in based on coolant temp, and changed the high speed cut-in so that it does not come on until 115C.

If my car ran 80C on the highway, I would immediately change the thermostat due to the fact that it would have to be broken for this to be possible. My car should not run under 85C, and if it did, I would correct the problem.
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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record
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