A/C quit

[JrStroker]

Okay, so my a/c quit working. Just up and nothing. I used to blow really cold, now its nothing but hot air, like the heater is on. It also surges, it will blow hard on 4 then kick off like its on 1, then back to 4. Only done that a couple times. Since the last time I used it and it worked right, I've installed amp research steps and a 6 inch lift.

My radiator fluid is a little low, could that affect it? I've crawled undernieth and watched the compressor kick in and out. It has a new belt and tension on too. Is there any coolant lines that could have broke or come lose in the engine bay? Or anything else. I'm stumped.

 

[Stroked777]

Check the ac lines. People had issues of them rubbing thru on the IC piping. And as for te fan speeds you have a bad resistor

 

[7.3powerstroke00]

I had the air temp blend actuator go bad on mine. left it running one day with a/c on, got back in few min later and nothin but hot air. Not sure about the fan speed change... Does yours have climate control?

 

[JrStroker]

I'll check the ac lines.
Where is the air temp blend door located at? Is it an easy fix or a shop fix?

 

[7.3powerstroke00]

It is a pita! You pretty much have to remove the whole dash out of the truck. It is behind and right of the radio.... I tried everyway I could to get to it without removing the dash. If you don't have patience time and a selection of tools id take it to a shop.

 

[JrStroker]

Awwwww heck. I'm just gonna hope its the frion lines. Ha!

 

[7.3powerstroke00]

If the compressor is still cycling slowly or somewhat normal still has Freon charge in it, if it is low it will usually cycle more rapidly. If it has a ruptured line the the compressor will not cycle. But even if the charge is a little low it should blow at least a little cool and not just hot air.

 

[JrStroker]

This is straight hot air. None what so ever cool. What's confusing is its like it happened over night.

 

[JrStroker]

If I play with my cold/hot button there is a popping noise behind it. If I push in on it when I turn it it binds and then pops .

 

[capt dong]

Put a set of manifold gauges on your lines. It'll say a lot. I rented a set from Autozone. Gauges were bouncing all over. Ultimately I was low on freon and my low pressure side valve was leaking. Evac and recharge and it's been good for over a year now.

 

[7.3powerstroke00]

Mine did it in a matter of 10 min while running with a/c on and cold when got out and nothin but heat when got back in.

 

[JrStroker]

Gosh. That blows. I may have a shop check it out.

 

[7.3powerstroke00]

Good luck hope not to costly of a fix.....




But then again a/c is worth every penny it takes to get it workin again!

 

[JrStroker]

Finally got around to changing the blend door. That was the problem. Now I've got my ac and heat back.

 

[7.3powerstroke00]

Awesome glad wasn't to big of an issue!