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. . .So this missing temperature switch... does it perform a vital safety role for the system? (But the pressure switch does that...) What does it do, and is there anyting I can do while operating the system and vehicle that can compensate for the lack of this switch? The system is running perfectly right now...

Thanks


all i can tell you is that the circuit schematic in my helms manuals FOR A 1992 TROOPER with 3.2l sohc engine, says the

A/C THERMO SENSOR
Closed 145* +/-5*C (293* +/-9*F)
Open 160* +/-5*C (320* +/-9*F)

which says to me that it cuts off the compressor when it's open, which is when the sensor senses the compressor has temps above 311*F to 329*F. search for a JLEMOND post fairly recently where he gives some info, i think.

i don't know what the chances are of this sensor actually needing to do its job. but, my guess is, it has some safety implications (or parts preservation function).

can't you just use the old sensor/switch? i don't know for sure, but i'd be surprised if the a/c compressor relay would function without input from the thermo sensor/swith.

have a good trip. . .