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Today I did TSB 3 17, where you ensure that the rear fan stays on also when the switch disengages the compressor. I didn't follow 100%, because they suggest removing engine front access cover and use new wire routed through the center console. That's not necessary, it can all be wired under the instrument panel and to the relay box.

At the same time I changed the capillary switch to an electronic. Primarily because the old switch was almost impossible to turn, and I didn't want to ruin the knob.

And now to the question. When driving with a thermometer in the A/C outlet, the temp seems to vary much more than with the capillary switch. Is that just the way it is, the electronic switch's sensor is less accurate? Anyone has the electronic one?
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quote:
the old switch was almost impossible to turn


Mikael,

Mine (in the Pantera) was also getting difficult to turn. I removed it from the console and squirted some LPS-1 inside, and it rotates like new.

quote:
the temp seems to vary much more than with the capillary switch


It sounds like the control's temperature differential (temp "spread" between switch "on" and switch "off") is greater than that of the old capillary tube switch. This temp differential may or may not be field adjustable. Or, the sensor for the electronic switch is not located in the same place as the old capillary tube.

Do you have a link to the electronic thermostatic switch?

John
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