AC not blowing cold air in my 2001 F150
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Junior Member
Joined: Jul 2015
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AC not blowing cold air in my 2001 F150
My 2001 F150 isn't blowing cold air. The heater works fine and a mechanic told me today that he knows it's in the vents because the blower and vacuum work just fine also. He was to dirty from other repairs he made on the vehicle to start inside and asked me to bring it back. I'm a little irritated that I have to bring it back, so I was wondering if anyone on here had any idea what it could be.
Senior Member
Joined: Jun 2010
Posts: 16,662
Do you know what the A/C compressor looks like ? If so, with the hood open, A/C off, with the engine idling in park, look at the center of the front of the compressor just in front of where the belt is located. That center part doesn't rotate with the A/C off, however, when the A/C is turned on that center part should rotate at the same speed as the belt driving it. If it is not rotating there is an electrical problem preventing the magnetic clutch from locking the center part to the driving pulley.
If it is rotating that means the compressor should be working. On the passenger side of the engine compartment there should be a cylindrical container that should be getting cool/cold. It has hoses coming from the compressor and the condenser in front of the radiator. That compressor should be clicking on & off a few times a minute (cycling). If it is cycling many times in a short time it could mean a low refrigerant charge which would result in either little or no cooling. Not knowing if I presented the suggestions clear enough for you to check , I will stop here and wait for an answer from you.
If it is rotating that means the compressor should be working. On the passenger side of the engine compartment there should be a cylindrical container that should be getting cool/cold. It has hoses coming from the compressor and the condenser in front of the radiator. That compressor should be clicking on & off a few times a minute (cycling). If it is cycling many times in a short time it could mean a low refrigerant charge which would result in either little or no cooling. Not knowing if I presented the suggestions clear enough for you to check , I will stop here and wait for an answer from you.
Senior Member
Joined: Jun 2010
Posts: 16,662
With a 2014 vehicle it should not be because of a low refrigerant charge, but anything is possible.
Some things you might check,
You should have the owner's manual and in there it will list which fuse controls the A/C system and it's location.
A thorough visual inspection may reveal if any wires came off.
Look for any wires that may have come loose or off the A/C compressor.
There are relays involved for the system to operate, but they are enclosed in a sealed module and cannot be accessed individually without a scan tool.
The last 2-3 items are possible low refrigerant charge, defective low or hi pressure switch and possible problem with the heating / cooling module inside the vehicle which I would think should be covered by warranty as should all the above possibilities.
Some things you might check,
You should have the owner's manual and in there it will list which fuse controls the A/C system and it's location.
A thorough visual inspection may reveal if any wires came off.
Look for any wires that may have come loose or off the A/C compressor.
There are relays involved for the system to operate, but they are enclosed in a sealed module and cannot be accessed individually without a scan tool.
The last 2-3 items are possible low refrigerant charge, defective low or hi pressure switch and possible problem with the heating / cooling module inside the vehicle which I would think should be covered by warranty as should all the above possibilities.
Junior Member
Joined: Jul 2015
Posts: 3
Thanks!
With a 2014 vehicle it should not be because of a low refrigerant charge, but anything is possible.
Some things you might check,
You should have the owner's manual and in there it will list which fuse controls the A/C system and it's location.
A thorough visual inspection may reveal if any wires came off.
Look for any wires that may have come loose or off the A/C compressor.
There are relays involved for the system to operate, but they are enclosed in a sealed module and cannot be accessed individually without a scan tool.
The last 2-3 items are possible low refrigerant charge, defective low or hi pressure switch and possible problem with the heating / cooling module inside the vehicle which I would think should be covered by warranty as should all the above possibilities.
Some things you might check,
You should have the owner's manual and in there it will list which fuse controls the A/C system and it's location.
A thorough visual inspection may reveal if any wires came off.
Look for any wires that may have come loose or off the A/C compressor.
There are relays involved for the system to operate, but they are enclosed in a sealed module and cannot be accessed individually without a scan tool.
The last 2-3 items are possible low refrigerant charge, defective low or hi pressure switch and possible problem with the heating / cooling module inside the vehicle which I would think should be covered by warranty as should all the above possibilities.
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