Quote:
Originally Posted by jt20
They both sense water temp. One is variable for the dash:
mbz: 0055421017
other is single temp changeover for egr (as stated)
bosch: 0280130035
Thanks - Now I really feel like I got alot accomplished today.
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So why did my pre-EGR 240D have a wire to hook to each of the senders? Also I thought the EGR for pre-'85 cars was all vacuum controlled. 
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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver
1982 300SD - 232K miles - Wife's Daily Driver
1986 560SL - Wife's red speed machine
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