Please advise on A/C conversion

[Joshua Van Tol]

>My 4kq is charcoal (more or less black), with grey interior, and no
>tint either.  Usually when I start the car at the end of my work
>day, I have a vent temperature of about 140 degrees.
>Even with this, I have no problem getting the temperatures down very
>quickly, usually in less than 5 minutes, I have vent temps around 55
>degrees.
>
>My one curiosity, and a question for the list, is what regulates the
>compressor duty cycle?  Even with the very low high side pressures I
>see, my compressor still cycles on and off normally, as if it is on
>a timer.  What gives the compressor it's signal?
>

A thermostatic switch with a probe stuck in the evap. I think on the
4k it's adjustable by means of the hot/cold lever.
--
Joshua Van Tol -- josh at spiny.com