Please advise on A/C conversion

[Wayne Dohnal]

>My one curiosity, and a question for the list, is what regulates the
compre=
>ssor duty cycle?  Even with the very low high side pressures I see, my
comp=
>ressor still cycles on and off normally, as if it is on a timer.  What
gives=
>the compressor it's signal?

On my '84 4000 there was a temperature sensor at the evaporator under/behind
the glove box that controlled the compressor clutch.  With this arrangement
a number of things (fan speed, intake temp, etc.) would indirectly control
the duty cycle.

Wayne Dohnal
1994 S4