air conditioning compressor stays on
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air conditioning compressor stays on
The A/C in my 1990 F250 has recently started staying on.
I started seeing a puddle on the ground after shutting off the truck, even though I had not turned on the A/C.
Today I popped the hood and could see the compressor starting up, even though I had the heat on.
At that point, I shut off the engine, and unplugged the connector on the compressor, as I won't likely need A/C over the winter.
What should I check for to troubleshoot this?
Something is telling the A/C to come on, just not familiar enough with this truck to know what. I did search for it, didn't find anything too helpful though. It's probably here somewhere, and I'm just using the wrong search terms.
I started seeing a puddle on the ground after shutting off the truck, even though I had not turned on the A/C.
Today I popped the hood and could see the compressor starting up, even though I had the heat on.
At that point, I shut off the engine, and unplugged the connector on the compressor, as I won't likely need A/C over the winter.
What should I check for to troubleshoot this?
Something is telling the A/C to come on, just not familiar enough with this truck to know what. I did search for it, didn't find anything too helpful though. It's probably here somewhere, and I'm just using the wrong search terms.
Lead Driver
Joined: Aug 2006
Posts: 5,670
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From: Sand Lake, MI
When you have the heat on and use defrost the A/C runs, it is normal.
It should only run with the heat on in the defrost position though, no other position say like "Floor".
Running the A/C helps remove the moisture in the air, clears windows faster.
It should only run with the heat on in the defrost position though, no other position say like "Floor".
Running the A/C helps remove the moisture in the air, clears windows faster.
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Thanks!
Hotshot
Joined: Sep 2001
Posts: 11,958
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Every setting except for floor and vent will run the compressor. Mix or bi level will run the defrost which runs the compressor. You will want the ac hooked up for the defrost to work well since it pulls humidity out of the air.
Posting Guru
Joined: May 2007
Posts: 1,208
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From: North Reading Mass
Some owners install a switch to shut off the compressor.II don't mindd the comp coming on in defrost but don't really want it on the other modes.
It is a good idea to run the A/C occasionally to keep the seals lubricated.
regards
rikard
It is a good idea to run the A/C occasionally to keep the seals lubricated.
regards
rikard
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Well, I'm feeling kind of stupid right now. It was just the floor/defrost setting.
Put it on floor only and the compressor stayed off.
I have other cars that work this way, for some reason it just didn't click with me on the F250.
Thanks for the help.
Put it on floor only and the compressor stayed off.
I have other cars that work this way, for some reason it just didn't click with me on the F250.
Thanks for the help.
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