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A/c Vent Temps

Old Aug 29, 2005 | 11:26 PM
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From: tampa
A/c Vent Temps

alright all you guys with the thermometer in the vent,it has been said here that anything under 50 degrees is all FORD requires out of this truck.QUESTION: how long does it take to get that vent temp down to 50 from lets say ...100 degrees in the cab?THE POINT? 40 to 50 vent degrees is fine, but how long do we have to endure the high temps before the cab gets comfortable? will test mine tomorrow !
 
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Old Aug 29, 2005 | 11:34 PM
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I'm not sure how long it will take, but if you don't open your windows a little bit and get some air moving, it will take a long time to cool down the truck. I know a lot of people who leave their windows up and start their AC and it takes forever to get cool, you still have all of that hot air in th cab and you need to get it out.
 
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Old Aug 29, 2005 | 11:47 PM
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It should be about 40 at the output. 50 is plain wrong, I don't care what anyone says about it. Mine does 40 with 125 degree intake air, as does every other one of these trucks I have looked at.

For best cooling, always put a sunshade etc. in the window. It will save a lot in gas, as it takes horsepower to turn the compressor.
On a hot day, always use the recirculate (max air) till it cools down.

On opening a window, even a small opening invalidates the A/C.
These are refrigeration units, not swamp coolers.
Anyone running with an open window is trying to air condition the enviroment, not the truck.
For best results, never use the thermostat (on manual A/C trucks). That costs gas. The way the A/C on cars works, is when it is on, it's full on. So to moderate the temp they 'blend' heater air with the cold air to get the temperature to where you want it.
So rather than shut the A/C compressor off to save gas, they run it steady and mix it with warm air.

The little button is for economy. Use the A/C full on till you get comfortable, then mix it yourself by turning the A/C on and off. That's if you want the best miles per gallon. Or use the heated air for easy of use, and to heck with the gas. Your business.
Chris
 
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Old Aug 29, 2005 | 11:52 PM
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From: Central California
Just get remote start and not worry about it
 
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Old Aug 29, 2005 | 11:54 PM
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I just set mine to whatever temperature I want and it works great year round! Oh that right I have a Lariat...
 
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Old Aug 30, 2005 | 05:44 AM
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The AC has an "OFF" button? Who knew?

While parked, I use ventshades, crack all four window and have a big **** shade for the windshield. Cab temps run about 10 degrees above ambient.

I get in, start truck, close windows, diddle around for a minute (I have to keep track of miles and keep a job site log), remove big shade & go.

Vent temps run about 55 degrees, just haven't had a chance to get it to the dealer.

Dave
 
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Old Aug 30, 2005 | 07:08 AM
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From: Sunny FL
Average daytime temperature has been in the upper 90’s the past couple of months. My vent temperature runs at approximately 44° and gets there fairly quick, three or four minutes. The cab starts to cool down immediately but it does take 10 minutes or so before the EATC lowers the fan speed.
 
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Old Aug 30, 2005 | 07:59 AM
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From: Georgia on my mind...
It depends. If I park my truck out in the sun all day at work, it'll take about 10 minutes or so for the A/C to get to peak performance, and even then it doesn't cool as well as if it's been parked in the shade all day. The system can only displace so much heat.
 
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Old Aug 30, 2005 | 09:05 AM
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I also use the big **** windshield shade and it has been hot as hell here lately. Mine will pull it down to 41 degrees (by thermometer) if run on max a/c. It takes about 5 min of driving to do it. Now on regular a/c (non-recirculate) forget it, 50 deg is a low as it will go.
 
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Old Aug 30, 2005 | 10:54 AM
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Originally Posted by SAJEFFC
I also use the big **** windshield shade and it has been hot as hell here lately. Mine will pull it down to 41 degrees (by thermometer) if run on max a/c. It takes about 5 min of driving to do it. Now on regular a/c (non-recirculate) forget it, 50 deg is a low as it will go.

Makes sense, the results you get.
By thermal gun, my truck dash gets up to 175-180 when parked in the sun in infront of stores. That's when the air temps are in the 105+ range. I leave it on recirculate and it pulls it down in two or three minutes. Important when you are going from store to store around town.
I have a regular cab, so of course it will cool better than the bigger trucks.
The sunshade is required in any of my cars, from the little Suzuki Tracker to the Touring Coupe. And the truck has more 'greenhouse' than any car.\
Chris
 
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Old Aug 31, 2005 | 10:48 AM
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alright here we go: 91 outside,115 in cab @ 11:54,after 12 mins....78 in cab,50 @ vent.....25 mins into this, 72 in cab,45 @ vent....41 mins into it, 70 in cab,@44 @ vent...1 hour and 40 mins, after sitting for 15 mins 68 in cab, 38@ vent..very chilly, felt good. so as i look at it....25 mins to get a vent temp of 45? ..good bad? seems slow to me. will check wifes 05 grand cherokee. you tell me what you think.
 
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Old Aug 31, 2005 | 10:52 AM
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From: Georgia on my mind...
Nah, sounds alright to me. What color is your truck and it's interior? Darker colors absorb more heat, leaving the A/C more heat to displace.
 
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Old Aug 31, 2005 | 11:05 AM
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Originally Posted by ChrisAdams
On opening a window, even a small opening invalidates the A/C.
These are refrigeration units, not swamp coolers.
Anyone running with an open window is trying to air condition the enviroment, not the truck.
Chris
In cab temps exceed outside ambient temps due to the greenhouse effect. So you should open your windows to vent out the heated air, from both in the cab, and you might as well turn on your a/c because the air in the ducts are also hotter than outside temps. So once you start feeling the a/c cooler than when it started, close your windows.

Back to the main point, it does take a lot longer to cool down the truck compared to my 98 explorer xlt. Could just be a failure to design an efficient system. I really don't have any complaints even when the outside temp is 120 and inside my truck is so much hotter. You could add electric fans to the condensor, however that is a cost we shouldn't have to pay for in the first place.
 
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Old Aug 31, 2005 | 11:14 AM
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From: Pratt, KS
Don't use no stinking sunshade!!

Though I do park in a garage at work

As a result, the fiddy is protected from the elements for 85% of it's life.
 
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Old Aug 31, 2005 | 11:56 AM
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Quentin...yellow outside...and of course black inside , leather with sunroof...haha worst of everything..right?
 

Last edited by mslc1; Aug 31, 2005 at 11:59 AM.
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