Question about 2001 Ford F150 Styleside SuperCrew

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Is there an air filter somewhere in the a/c system, and how do you change it?

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If you are talking about the cabin air filter, this filters the outside air for the HVAC.
Hastings Filter (#AF1057) shows one for the 97-03 MY trucks.

Remove the screws that hold the horizontal filter housing cover from behind the glove box (no need to open the glove box);

Pull the cabin filter straight down (sits vertical behind the glove box inside the housing).

Install replacement and reattach the cover.

Posted on Jun 24, 2010

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Hi, there is what is called a filter drier to collect any moisture or anything that may come off of a moving part in the system, but I can tell you how to locate and check it to see if it is restricted. You have to have equipment to remove the freon, replace it, and go through all of the other steps to get it going again. If you look at the compressor and lines on your truck, on the smaller of the 2 lines is where the filter is located. Some have a clear round sight glass on top so you can see the freon in the system when it is on. It will be hanging and be connected to 2-flared 3/8" or 1/2" high side lines. If there is air bubbles or a foaming going on, that indicates it is low on charge. It should be black in color and the shape and size of a 12oz coke can mounted inline of the high side. Just follow the smaller high pressure line which will run from the compressor back to the condenser coil which is back to back with the radiator and on up toward the firewall. The only time it would need to be changed is if it did have a restriction in it and unless you have a set of manifold gauges for a R-134A system, you can tell by looking at it when the unit is on and pumping freon through the system. If you see ice forming on the inlet side which is going away from the compressor and some have an arrow on top, it will be plugged. If you have a digital thermometer with temperature leads (cheap at harbour freight tools) check the temp of the freon going into and coming out of and it should be very close to the same, with in 2 degrees F. Even though the line going into it and out is flared and easy to remove, freon has to be recovered, filter drier replaced, vac system out, and recharge to specs. Other then that, this is the only filter in the system. I hope I have been of help to you. Best of luck to you and keep me posted. If you need more advise, contact me.
Shastalaker7

Posted on Jun 03, 2010

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