Ok then, I stand corrected :o ....BUT I didn't know they put dye in from the factory, that is nice to know. I always have to recharge the systems at work with dye to find a leak....even the newest ones. I don't know why they don't put it in Mercedes, I guess the engineers are so stuck up, they think their systems will never leak.

 

thats funny ,my bosses expeditin gets down to 35 with dual ac.and the other thing is i dont sit in front of the vent closest to evaporator. i had a 71 f150 i put a sears add on ac in, and it would get way down to 34.45-50 just takes a long time to cool a cab off.here in tampa at 90 outside and 125 plus in cab,50 degrees just doesnt feel like enough.whatever....leave it idleing long enough and it gets cold...just when im in and out of stores is when it sucks...oh well...will know something for when i test drive my next vehicle...whenever that will be.

 

I checked the temperature of my A/C today with one of those thermometers you stick in the vent. It’s approximately 92° out today, give or take a degree or two depending on which side of the river you’re on, with 94% humidity. I use the EATC and had it set on 73°, that’s pretty much where I always leave it set. I drove about 45min. and the coldest it got was 42°. After the truck cooled down it hovered around 48° to 50°.

 

Heck, I had to run the test also. I had to make a quick run to Barstow. Gorgeous day 99 degrees and very light wind. 65%humidity. Perfect spring weather.

So at 99 degrees my A/C at the vent exit held 38 degrees on a 'candy' thermometer, and as low as 15 down in the pipes using a Raytek Minitemp gun. The dash temperature hovered around 95-105 the floor about 68. Playing with a temp gun while driving is not a good idea, so I quit. When I got out into the parking lot the pavement was 141. Normal around here in the spring.

The problem was that it was so cold in the cab that I was starting to shake, and had to raise it back up. Getting out into 99 degree felt great. I will try the test again when it gets above 115 later this month, or early next month.

If you have a problem with the truck getting too hot inside during quick stops, do what we do here, put a sunscreen up, and open the windows a fraction of an inch. Makes a huge difference, saves gas and wear and tear on the interior.
Lots of greenhouse on these trucks. One reason I like it.
Chris

 

just did mine also, got 41 degrees at the vents, not bad i guess

 

So did the dealer fix it? Still any problems?

 

finally changed out the low pressure cutoff ,this kinda solved my problem with compressor cutting out at stop and go driving.purchased one from napa that cotoff at 21 lbs and now my temp will get down to 42. still takes a long time to get there.the water forming on lines under the hood is a concern because it drips from the front of the engine area , well isnt that about 2 feet of cold piping that should be inside the cab? hmmmm, if i go back to my thermodynamics classes and steam boilers, the transfer of heat or transition of states (gas to liquid, steam to water) should in theory happen at the very end of the coil , not underneath your hood near the fan...i still say the evaporator is under sized for the system. and oh yea...ford has NEVER made any engineering mistakes !!!! lets see....pinto, explorers with firestones,7.5 inch rear ends on 83 mustang gt,heater cores out the ***,the recent cruise control switch fires.... dont get me wrong,im a ford man, but as a qc manager i think ford should provide better customer service and address all these problems..brakes, a/c, vibrations,wavy bed sides,rear end problems....sad to pay 37,000 for a vehicle and have to fix the problems myself. but with 54k on it and out of warranty the dealership is out of question,too bad ,i could have been a good testbed for them..

 

I just added R134A to my A/C. When I started the gauge read 36. After adding the entire can, the gauge still reads 36but the A/C does seem colder. While adding the freon, I had to back off the tap because if I fully opened it, it read in the danger side but if I slowly added it, it was around 36 and that is where it stayed. Should I add another can? Any suggestions? Ambient temp was about 87.

 

I hope you are right, my 05 is still warm..

off to AutoZone I go!

 

take it to the dealer most likely you have a leak, freon is supposed to last 20 to 30 years.

 

Don't know the time factor, but this ain't freon. I have lit up cars that had sat twenty years, and if the seals aren't leaking, they still blow cold.
always remember to run your compressor a few minutes every month, even in the winter, to keep the seals flexible.

Running the defrosters do that also, but some folks live where they don't need defrosters in the winter, or A/C.
Chris

 

Well in my department at work there are 2 04 f150s and 1 05. Only one of those seems to blow out really cold air.

 

I have an '05 (mfg'd Dec 2004) and I drive about an hour each way too and from work. In the morning I don't really need my AC, but on the way home I do. A couple months ago when it started getting warm, it'd take about 45 minutes for my truck to become chilly (or basically a temperature that prompts me to turn down the blower), set at max air and the blower set to 3. I recently took my truck in for a few issues (squeaky power rear sliding window, ticking coming from engine, lag in acceleration problem, and cool but not cold AC). They updated the PCM and said that will take care of the lag in acceleration and then what sounded wierd to me, the update should also take care of the AC problem.... According to the service log they also discharged, recharged, and pressure tested my system. Now my truck gets chilly in about 25 to 30 minutes... that still doesn't seem very good. In the same 85 to 95 degree temps we've had recently, my wife's Vue gets chilly in about 15 minutes, if not less.. I plan on calling up my dealer again to have them take a look another look at it.

 

It's been 115+ here the last couple weeks. My trucks sits in the sun all day since it won't fit in the garage so it's extra hot inside. During the day, if I can drive without much stopping, it gets comfortable relatively quick and cold within 15 minutes or so. In stop and go traffic it's not quite so good. At 10:30 at night when I go to work it's about 100 degrees but no sun, I'm cold in about 2 or 3 minutes. Same thing on the way home before it gets too hot. I guess I won't complain about mine anymore.