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#1
09-08-2004, 07:22 PM
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380sl runs hot after replacing water pump, tstat, radiator
After I replaced the water pump, radiator, tstat, and all drive belts the car is running hot (100c-115c) Three month ago it never got over 90c even with the a/c on. Any thougths?
Last edited by jimsclub; 09-08-2004 at 07:23 PM. Reason: forgot word 
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#2
09-08-2004, 10:02 PM
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BAd gauge or sending unit will do it every time. So will a bad visco clutch or a bad pressure cap. The latter will make it "burp" coolant after a highway run.
visco clutch must cause the fan to draw large amounts of air and roar for a second or so on startup until the fluid spins out of the working zone, and draw large amounts of air and roar when hot. Must stop within a single rotation of the engine when shut off hot, any more than that, it's toast. Less fun are dragging brakes, slipping tranny, blown head gasket. If it runs hot in slow traffic, but stays at 85C on the highway, replace the visco clutch. 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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#3
09-08-2004, 11:51 PM
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Cat Convertor
Do you notice any loss of power. If so it could be the cat is plugging up...It can cause the engine to run hot..I bought a 380SLC in Salt Lake, Utah and I ran into that problem returning with the car to Indiana...Good Luck
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James A. Harris
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