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#2
11-29-2013, 07:18 PM
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shuddering
sometime when i drive my 1982 300d it will shutter or pulse when it first starts driving. thats really the only way i can explain it. you hit the gas and it gets all lurchy and shuttery. it calms down after a bit.
curious. 
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#3
11-30-2013, 01:19 AM
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Mono valve and/or tube sensor tube behind glove box.....could also be the push button assembly...
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#4
11-30-2013, 08:47 AM
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basically if i click the button..it usually wont come on...then after the car warms up it comes on..really odd. also should the fans come on regardless..if i push a fan button shouldnt it come on? am i missing something..this car is new to me.
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#5
11-30-2013, 09:26 AM
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Working as designed I believe. The heat doesn't come on until the engine achieves a certain operating temperature. I don't recall the temperature value offhand. To get the blower working right away hit the defrost button and then the center button. I have to do that on my 85TD because the comfort circuit isn't working.
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#6
11-30-2013, 09:58 AM
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Check coolant level too.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.  [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#8
11-30-2013, 12:29 PM
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I thought my automatic temperature control was bad, until I read the user's manual and found that it is designed a bit quirky (drunk Germans?). In winter, normally use only the "EC" button (w/ down arrow), assuming yours is the same as my 84 & 85. The ATC gives heat when it decides it can/should, and turns on the blower when it thinks you need it. That is even after installing a new mono-valve (electric hot water valve). I also tried another ATC, with no difference.
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