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#1
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1980 300sd.....no Heat
Last winter lots of heat no problem. This fall ZERO heat and its getting cold fast. Where do I start looking for the problem before I get frost bite driving to work.
Thanks!!!
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1973 280 - Sold 1980 300SD - Sold 1982 240D - Stolen 1988 300E - Sold 1989 260E - Sold 1989 560SEL 1994 E420 - Sold 1997 E420 2005 CL500 |
#2
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It could be your heater valve, faulty climate control unit, or air or clogging in your heater core. My bet would be on the heater valve unless you had someone mess with your cooling system since last winter.
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2004 VW Jetta TDI (manual) Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL |
#3
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The dreaded servo unit..., There are great step by step testing instruction in the FSM available from MBUSA.com for $20, boy do I sound like a commercial. GL. Servo unit is the suck all of W123's. Thanks Chrysler!
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http://superturbodiesel.com/images/sig.04.10.jpg 1995 E420 Schwarz 1995 E300 Weiss #1987 300D Sturmmachine #1991 300D Nearly Perfect #1994 E320 Cabriolet #1995 E320 Touring #1985 300D Sedan OBK #42 |
#4
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I have the servo in my 1980.
For years I used the bypass hose method. Cost maybe $5 and leaves hot water flowing all the time. Putting in the bypass hose will tell you if the servo is not behaving and gives heat. If the hose bypass does not work it could be something else.
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80 300D 340K Owned 30 yrs 83 300SD 440K Owned 9 yrs - Daily Driver 150mi/day 02 Z71 Suburban 117,000 15 Toyota Prius 2600 miles 00 Harley Sportster 24k 09 Yamaha R6 03 Ninja 250 |
#5
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how/where do i put in a bypass hose? anyone have pics available?
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1973 280 - Sold 1980 300SD - Sold 1982 240D - Stolen 1988 300E - Sold 1989 260E - Sold 1989 560SEL 1994 E420 - Sold 1997 E420 2005 CL500 |
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