2006 w/ 44k miles. Started a few months ago and has gotten worse. Turn the a/c on and nothing but ambient air blowing in. Drive for a few miles hitting the a/c button and turning the fan off then back on a couple times and it will eventually kick in. Don't think there is a problem with the freon level as it still gets cold as hell. Once it kicks in it stays on until you shut the truck off then the whole thing starts over again. Its not the HVAC door problem b/c that broke last year. Thoughts?

 

did you puul the glovvebox down and check the recirc door? just push the sides in to let it come loose


mine fell off, and the AC could not overcome the outside air because of the way it was flowing.

do a search for post HEATER TREATER.

 

Does the compressor come on when you hit the snowflake button? If not, perhaps there's an issue with the button.

 

it's MOST LIKELY low freon. Plenty of thread already on how to find out and deal with it. Just search low freon.

 

The recirc door is already out. Took it after it broke.

 

I had the exact same symptoms... mine is in the shop now for it. As it turns out, the orifice tube in the cooler line broke loose and lodged deep within the line. I ordered a new line with the tube built in for $65 at advance auto. They should be done with it in the morning... I am hoping that is all. A new compressor and dryer is not in my budget right now.

 

Did the new line/orrifice tube work? i was told it would be a $700 part for a computer?

 

if your AC works after messing with it, its not your orifice tube or freon or anything else in your charged AC system. It sounds like either a button, blend door or a sensor issue. When you turn your AC on does the compressor kick on? Does your accumulator get cold?

 

The compressor tries about 3x then nothing. It will try everytime the button is pressed. Freon is ok, the mechanic joined two wires (red and blue/yellow) and it worked for a day and 1/2. Now same thing even with the wires bypassed. Nothing else is wrong on the truck. I have a #2 pencil holding the broken door. I don't want to replace the ecm and reflash everything. Would a low pressure sensor cause this mess. I added two cans of 134 (the mechanic said I had too much) and it worked for a day? I'm on vacation now and had to borrow a FORD to pull the camper and boat(double). I really appreciate you help!

 

my accumulater does not get wet, the compressor doesnt kick in, although it tries. thanks

 

Clutch coil is dieing or dead already.

Unplug the 2 wire connectin on top of comp, it goes To TIPM

voltmeter the connection, key on,snowflake on

if your getting at least 10.8 volts, it's not the computer.

Next, ohm the coil (wires on compresor side) for resistance.

I'm betting it's the coil.

Good Luck....Boudreaux

 

^^^^^^^ This was going to be my guess also,,, since you said "it was trying to come on" and that it's cold when it does come on.

 

Yeap, sounds like the coil. Ohm it out and check it.