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#1
09-18-2008, 07:01 PM
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Jumpy Temp Guage
I have just replaced my temperature sender unit (the thing that sits on the termostat that has that one nipple connecter), anyways my temp gauge will jump form 90*C to 88*C i wanting to know how do you make its STOP its driving me crazy with the false temp reading.
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Current Garage 2008 Mercedes GL320 CDI 188k mi Repair/Work in progress 1994 S350 160k mi Garage Queen & prepping for repairs 2005 E320 CDI 203k mi Healthy & Daily Driver 1994 S350 357k mi Retried as parts car 1984 300TD 214k mi Blown OM617 Poss OM603 Swap?? Sold 1987 300SDL 200K+ 1994 S320 181K mi 2008 E320 Bluetec 127k mi 1999 S420 130K mi 1980 240D 360k mi 15+ Others that has come, stay and gone GONE, BUT NOT FORGOTTEN  1995 E320 SE 220k mi 1984 300SD 350k mi 
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#2
09-18-2008, 07:13 PM
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Try running a new ground from the back of the instrument cluster. I think the eng temp sensor is in the head, isn't the one on the T stat housing for something else?
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 1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car"
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#3
09-18-2008, 07:38 PM
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Correct.
__________________
 "Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970
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#4
09-18-2008, 11:05 PM
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Its either a bad ground or a fialing sensor. The one in the t-stat housing is for the climate control.
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