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#1
10-01-2011, 11:58 PM
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Heat at idle, not on load or at speed - w123
Never had this before. The weather just turned here so I have the heat on.
On my 1985 300d, at idle: more heat than I can use. Temp gauge shows normal. When driving: faster I go, less heat I get (have to turn up temperature wheel to staywarm). But car runs a bit hot, around 100. At highway speeds the heat wants to go away completely. Have to turn the wheel way up (and operating temp does drop a bit). This is the opposite problem I had with all my SDs, in cold weather.....
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 Mac 2002 e320 4matic estate│1985 300d│1980 300td Previous: 1979 & 1982 & 1983 300sd │ 1982 240d “Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22 
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#2
10-02-2011, 09:24 AM
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Low coolant in the system is the first thing to check. Second thing is a torn Mono valve. Third thing would be an inoperative aux water pump.
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81 300CD (sold) 1972 280 SEL 4.5 (sold) 1966 250 S 4 spd (sold) 1974 450 SL (sold) 86 BMW 325ES (sold), 1973 280C (sold) 1988 300 SE.
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#3
10-02-2011, 02:05 PM
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Quote:
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Linear Mode
