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05 600 sdi coolant temp sensor testing please help

L
Nov 29, 2007
28
0
1
Olympia, WA
I need to check the ohm reading of my temp sensor in my 05 600 sdi. The dealer gave the readings it should be for a given temp, but I forgot to ask him which wires to test. There are 4 wires. one black, one purple, one brown and one black with orange stripe. Anyone know the proper way to test? Anyone know what temp these engines are supposed to run. I shot the temp on the engine and the warmest place I could find was 120 and the temp light was on and it went into limp/go no where mode. Thanks for any help you can offer.
 
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