how cold is your A/C?
Senior User
Joined: Apr 2007
Posts: 147
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From: Porter, TX
Freshman User
Joined: Jul 2005
Posts: 29
Likes: 0
I think a major problem with the design of the a/c in these trucks is that the engine cooling fan just does not turn enough to draw sufficient air over the condensor when the engine is at normal temps. I solved this issue by mounting twin auxillary fans in front of the condensor wired in series.
They are controlled by the a/c compressor relay and i use an upfitter switch to cut them off on long highway trips. The ram air at highway speeds is plenty to cool the condensor. Benefits to all of this is lower head pressures (increases service life of compressor) at low speeds and chilly a/c when used with remote start. Since I wired the fans in series they run at half speed (more than enough air) and are quiet. I'll try to get a pic of the installed fans posted tonight.
They are controlled by the a/c compressor relay and i use an upfitter switch to cut them off on long highway trips. The ram air at highway speeds is plenty to cool the condensor. Benefits to all of this is lower head pressures (increases service life of compressor) at low speeds and chilly a/c when used with remote start. Since I wired the fans in series they run at half speed (more than enough air) and are quiet. I'll try to get a pic of the installed fans posted tonight.
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Tuned
Joined: Dec 2006
Posts: 337
Likes: 39
From: Shenandoah valley, Va
Originally Posted by blackhat620
From TSB 6-17-12
"Some 2004-2007 F-Super Duty, 2004-2005 Excursion, and 2004-2007 F-650/750 vehicles may exhibit a lack of air conditioning (A/C) cooling, due to desiccant material clogging the evaporator core orifice tube."
www.ford-trucks.com/tsb/fulltext/show_article.php?tsb=06-17-12
Also, what temps did your tech measure at the output side of the evaporator (or at vents)?
Hope this helps
"Some 2004-2007 F-Super Duty, 2004-2005 Excursion, and 2004-2007 F-650/750 vehicles may exhibit a lack of air conditioning (A/C) cooling, due to desiccant material clogging the evaporator core orifice tube."
www.ford-trucks.com/tsb/fulltext/show_article.php?tsb=06-17-12
Also, what temps did your tech measure at the output side of the evaporator (or at vents)?
Hope this helps
Freshman User
Joined: Dec 2006
Posts: 43
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From: MD
Originally Posted by Flatdeck
Mine does that too. I usually have it on the upper/lower vent position (first position clockwise from off) and with the temp set to "cold" it blows cold air, cold enough that my bare arms get cold to the touch from the upper vents, and definitely much colder than the outside temperature. I actually haven't had to use the a/c yet, but I'll probably try it out this summer when I need recirc instead of vent.
Senior User
Joined: Apr 2007
Posts: 252
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From: Memphis
Originally Posted by F250tuff
40 degrees is very good for an A/C system. When I checked my truck last week, it only getsdown to 50 to 55 degrees.
I still have not tracked down the issue with mine. Even with the windows up and in recirculation mode, after 10 or so minutes it still only gets down to 53-55*. Boo. I think my pressures were 200ish and 40ish.......I think. Can't remember now. I just know it was kind of low. The ambient air was 80* or so at the time.
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Elder User
Joined: Apr 2004
Posts: 675
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From: Indianapolis, IN
Originally Posted by redford
My '07 F-250 (see sig) manual AC isn't as cold as my old 1995 F-150 XLT with manual AC. It's enough to keep me cool on a warm day, but the AC unit won't chill me out of the truck the way my old F-150 could. I swear you could have made ice cubes with that truck.
Elder User
Joined: Apr 2004
Posts: 890
Likes: 1
From: Douglas County, GA
Originally Posted by Gcrop
Is that in recirculation mode with windows up? I would think it should get colder than 50-55 after a while in recirc mode with the windows up. I think a 25* drop across the coil is average for the 250, is it not?
I still have not tracked down the issue with mine. Even with the windows up and in recirculation mode, after 10 or so minutes it still only gets down to 53-55*. Boo. I think my pressures were 200ish and 40ish.......I think. Can't remember now. I just know it was kind of low. The ambient air was 80* or so at the time.
I still have not tracked down the issue with mine. Even with the windows up and in recirculation mode, after 10 or so minutes it still only gets down to 53-55*. Boo. I think my pressures were 200ish and 40ish.......I think. Can't remember now. I just know it was kind of low. The ambient air was 80* or so at the time.
Last week, I replaced the A/C condenser, receiver/dryer, and the high-pressure compressor hose on my wife's minivan. After pulling a vacuum and recharging it, it gets down to 38 degrees on a 95 degree day. Now that's cold.
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Joined: Apr 2007
Posts: 252
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From: Memphis
Originally Posted by F250tuff
Yes, recirculation with the windows up. I too think it should be colder than that, but it keeps me comfortable so I'm not going to mess with it right now.
Last week, I replaced the A/C condenser, receiver/dryer, and the high-pressure compressor hose on my wife's minivan. After pulling a vacuum and recharging it, it gets down to 38 degrees on a 95 degree day. Now that's cold.
Last week, I replaced the A/C condenser, receiver/dryer, and the high-pressure compressor hose on my wife's minivan. After pulling a vacuum and recharging it, it gets down to 38 degrees on a 95 degree day. Now that's cold.
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