Quote:
Originally Posted by Glen
Thanks Arthur, I'll verify tonight. Just so we're clear, this is for my '95 W124, E320 wagon...3.2 liter I6. It's a late car so has the 4-prong thermo sensor.
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Yes ..the later went to the 4 prong , but that is still the same ..they just put 2 sensors into one casing , eliminatingthe 2 wire blu sensor...same deal..if you unplug that sensor with the car key On, the high fan will come on [ that is how we check high fan circuit]..when that fan is now On, it will quit when you pull the high fan relay, which should be the 30A/Green relay...if NO, the relays are in the opposite slots as they are supposed to be,and you will never know that b/c everything still works, but you will have the wrong fusing.. If the car was the V8 , the relay slots are different.
Let me know when you check it.
Another way is to jumper the sensor at the a/c drier that has the 6" pigtail wires on it..when you jumper them , the LOW fan comes ON ..you then pull the blu relay and that fan should stop if the relay is in the correct slot...either way , both test will tell the same tale and are simple , quicky tests.