I am absolutely determined to stop my compressor from doing it's little on-off routine every time I turn on the a/c- it's driving me crazy, and my mechanic says I am not low on refrigerant. I have had the evap and compressor replaced over the last 16 months, I have installed the pollen filter, yet I still hear that ongoing tick-tock sound from the relay behind the glovebox. It's like Poe's Tell-Tale Heart.

I signed up through Alldata to get all the detailed TSBs and other technical info on my car, and there is a specific diagnosis path for my problem that points to the low-pressure switch (pressostat).

If you have any other ideas I would love to hear them, as I have asked this question on the board more than a few times: if you are NOT low on refrigerant, and yet your compressor is rapidly cycling on and off, what is the problem? The low pressure switch has been suggested, as has the high pressure switch, the orifice tube too as I remember. But no one here seems to know for sure based on their own personal experience. If you have the answer, Jake, tell me and I'll kiss the ground at your feet :-)