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99 Explorer - No control of AC / Compressor

Either it's the age of the truck, or it has been designed this way.

Latley (and what seems to have been always) - the darn A/C compressor is engaging when I do not want it to. This has been bothering me for about 4 years, just finally fed up enough to post about it.

Anyhow - I have read the posts that Ford has designed the compressor to come on, even when it is cold for the maintenance of seals or whatever. I DO NOT CARE about seals - I personally hate dry air.

Does anyone have a simpler work-around other than putting a switch inline with the compressor coil? I tore apart my dash and extracted the climate control panel and will see if I can figure something out (like do NOT engage the compressor unless I want to).

Thanks for any info you can share

-Cold Feet

Reply to
RC
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While you may hate dry air, the simple fact is that the AC cycles to reduce or prevent windshield fogging. While you may dislike dry air and while you may not care about "exercising" the system, your vision will be the better for it.

Unplug the compressor, unplug the low pressure cut off switch, remove the fuse, evacuate the system or simply avoid adjusting the heater so that it blows air against glass...... If you keep the control on floor only, the AC will not cycle.

FWIW, it isn't just Ford that does this...

Reply to
Jim Warman

I should of stated, it is on the floor setting, and I still get the compressor coming on!

I know it de-fogs the windshield, but in 7% humidity, I'm not concerned about it de-fogging the window (and when the cabin gets hot enough, the fog won't appear anyhow!)

It's still my car, and I want to be the one who selects when the AC compressor comes on. It's beginning to seem like I have some sort of mechanical problem. Where did that guy say I could bypass the compressor clutch from inside the cabin?

-RC

Reply to
RC

Are you using the defrost selection? this will turn on the compressor. if you are using the mix settings this will also turn on the comp.

If you really want to shut the comp off then unplug the lower pressure switch on the side of the comp (maybe located on the reservoir too, not sure..)

Snow..."looking at buying an Explore"

Reply to
Snow

The only HVAC modes which do NOT enable the compressor are:

FLOOR ONLY OFF VENT

In all the other modes the compressor will run, and you control the temperature with the temperature knob.

If it isn't functioning this way, then you have a problem. If it is functioning this way, it is working as designed.

If you don't like the way it is designed, then others may be able to tell you how to disable the compressor. I imagine a switch and some wire could handle it. But then, I'm simple, that way.

Reply to
Alan Moorman

Like Warman said, just unplug the wiring at the compressor if you do not want it to operate. However, the seals will at some point dry out and you will lose refrigerant. If it were me, I would just keep the selector switch in the off position most of the time and maybe only run the compressor every few weeks for a few minutes to keep the seals from drying out. (a further reading of your post indicates that the compressor is running even if the selector switch is in the off position). Therefore, something is wrong, but disconnecting the wiring or removing the applicable fuse should keep the compressor from operating. No need for wiring an in-line switch. SF

Reply to
sf/gf

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