Quote:
Originally posted by alan911
What is suppose to trigger the AUX radiator fan ? Can I jump it to check it somehow ? Is it suppose to trigger with the Compressor ?
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Look for the 105/115 switch at the engine end of the upper radiator hose. Pull the single connector and ground the wire. With the engine running, the aux fan should come on full tilt. It should come on at 105C. It'll come on partial tilt (through a resistor) with the receiver/dryer switch. At 115C, the compressor should cut out, but there's no connection between the aux fan and the compressor except that they share a temp switch housing.
Sixto
95 S420
91 300SE
87 300SDL
83 300SD