How much R134 did you guys have to add? Mine was 25 PSI when I started, should have been 45 to 55 according to the instructions and temp. I added the 11 oz. can that came with the kit and it only went up to about 30 or so PSI.

 

If you take it to your dealer it’s covered under warranty

 

I'm aware of that but in my first reply I said I'd rather do it myself than go through that hassle. It's not particularly convenient for me to take it in to the dealer.

 

mine was at 25 or a little under. I added 19 oz. it brought it up to arround 40 to 42. you might have to buy you another 12 0z can. but I wouldn't add it all make sure it dosn't get above 45. accourding to my gauge there is a range thats ok it starts at 25 and goes up to a max of 45. so don't go over 45

 

I went and got another can, it didn't suck it down like it did the first can. When I put the second can on, it was reading about 35, I opened the valve but it only took a little more, however the guage is still below 40. Will it not allow you to overservice the system? I opened it up all the way on the second can but the can still seems over half full. I guess I'll see what it's like this afternoon when it gets hot. It should definitely work better than it did before.

 

Pressure gauges, be it the dinky guage that comes with a can of refrigerant from Wally World or a manifold gauge set, are not an accurate means to determine how much refrigerant is in the system or how much needs to be added to correct a lack of cooling and/or rapid compressor cycling concern. Pressure readings are meant to be used primarily as a diagnostic aid. Yes, pressures can give us a general idea of whether the system is under charged or over charged, but that's just it, a general idea.

Depending on ambient temps, you might be in for a nasty surprise when it gets hotter and more humid than it was when you charged it, as in the pressure relief valve opening and dumping all that fresh cold stuff you pumped in earlier, or, worst case scenario, lines blowing off. Or the system may work too good, in that lines and components may freeze up. Tread carefully.

 

Not sure of the specs etc. on this A/C (mine works fantastic) but normally when you are adding 'Freon' there are a couple things you might want to do. Keep the vehicle radiator cool usually by running water over it while testing/charging. That's not just for the vehicle, but at a lower temp the system is easier to charge.
Also, put your can of refrigerant in a pan of hot water, to raise it's holding temp and thus increase it's output into the truck.
Chris.

 

Just did mine today, I bought from NAPA It came with the gauge, and what do you know It was low, so added whole bottle and gauge said it was normal now. And holy Batman COLD COLD COLD

 

I took my truck in to have the AC checked and they found a leaking front seal on the compressor after performing a leak down test. I ended up with a brand new compressor and the AC is ice cold now.

I'm like you guys....its inconvenient for me to go to the dealer, but hey I had a leaky compressor. If I had done a DIYI add on can of freon (like usual) I'd still have a leaking compressor.

My suggestion is....if the AC is not blowing cold have the dealer look at it. If you have a leak its better to get it fixed under warranty. My truck was only down for a day....meaning they had plenty of F150 compressors in stock. Makes you wonder if leaking compressors are a common F150 problem?

 

In my 2002 SCAB, I hardly ever had to run the A.C. as cold venting was plenty......

However, this 2005 SCREW is making me run the A.C. as high as it can get. I took it in a few weeks ago, they said it was fully charged and it was blowing 23 degrees at the vent.

So.....just like my A.C., are they blowing hot air? or am I just expecting more than it's capable of giving?

 

Something wrong here, 23 F or C ? if it's F, that's way to cold. You would be iceing up in no time. If it's C that's way to hot, at 53F. It should be about 36-39 at the vent max air and recirculate.
Chris

 

I believe they were using F, but never stated.......

I can run the A.C. full blast for 30 minutes straight. It's comfortable, don't get me wrong, but I ought to have to turn the A.C. down after a while. I'm not getting anywhere near that point of needing to turn it down.

So ya'll recommend I take it back to them again?

 

I thought it was just my AC that was a little warm. I can have it on max at 60 degrees for awhile without it getting too cold. Looks like I'll have to try to schedule a trip to the dealer. I suppose that is less painful than a hot and humid North Carolina day with a warm AC.

 

My 04 has been in 6 times for the AC.. Leaked down the first time and they replaced the high side valve because it was leaking. Blowing 58-64 at the vents when they were done. New compressor in Apr still blowing 58-64.

I just walked in the door from picking it up at the dealer for the AC. They had it all day and it's still blowing 65 at the vents sitting in the driveway with 85 degree temps outside.

The reading on the Service receipt say normal pressures are 38/200 and that's what mine is reading on my gauges. My gauges are good ones.

My wifes 97 Grand Marquis sitting right beside it idling blows 48 degrees and in the wind at 50mph it blows 38-40 degrees. Coming home with the truck it got down to 58 degrees. THIS IS NOT AIR CONDITIONING>>>

I've got an 88 Bronco with an old R12 system that I filled with Enviro-Safe. It's a mix of Propane and Isobutane. Sitting in the driveway right now it's blowing 38 at the vents. In the wind at 50 mph I can stiffen a wet rag hanging in front of the vents. It's little too cold, but thats easy to deal with..

Coming home the other day I was using my infrared heat gun on the vents at 70 mph in the 04 150. I saw the vent temps go from 33 degress to 72 degrees then back down again, then it floats back up to 58-64 and hangs there for 10-15 minutes then it will drop back down into the 30's and starts the cycle all over again..... This is telling me there's a problem with the switch that holds the compressor in gear. If it can pull it down into the low 30's that also tells me the system has the ***** to be lots colder..

Now here's the real kicker... A buddy has a 04 Lariat just like mine and he's blowing 34-36-38 degrees all the time no matter what the outside temp is. Same trucks in my driveway at the same time and mines blowing 58-64...

I got the number of the Ford regional rep and I'm on the phone at 9am tomorrow... This is crap and I've screwed around with enough auto AC systems to know something is not right. These trucks have a condensor in front of the radiator big enough you should be able to hang meat in them and keep it cold.

One more person connected to Ford tells me this is normal and I'll be in a Chevy next week...

 

Um...and that would be an improvement?

It sucks that you're having such problems...I am lucky enough to have cold A/C, which is a good thing because otherwise I'd make the news when I turn my dealer into a drive-thru. I need my coldness...

Keep after it, kick some corporate butt, and may the force be with you...but for heaven's sake...A CHEVY???