AC cooling temp?
Posting Guru
Joined: Feb 2010
Posts: 1,411
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From: Opelika, AL
The temp guns are pretty accurate but they are very temp sensitive. Even holding it in front of the vent the cold air hitting it will cause the readings to get inaccurate quickly
Lead Driver
Joined: Dec 2003
Posts: 5,250
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just think of it as adding another gauge....
Junior User
Joined: Jul 2007
Posts: 99
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Anyway, empiretc is right on the money. Get a thermometer to get accurate. We have those Temp guns at work and they have a big variance. We bought three identical Fluke guns and none of them read the same. One was off by 15 degrees. I was always taught if your cooling more than 25 degrees than the outside temp then your ahead of the game.
79 Degrees when that picture was taken @ 62% humidity
I got out of the truck and my glasses fogged up.
Senior User
Joined: Mar 2009
Posts: 331
Likes: 0
From: Pekin,Indiana
BUMP!!! Want more info! I'm in Southern Indiana humidity is terrible here. I have not done the heather core mod but going to soon. Dad has a 96 Explorer and it has the valve shut off dipping low 40 Degrees. Tested mine today and got 58 degress after cab closed and windows at High Idel. Windows down doors open at H.I. 62 Degrees pressure low side 45 psi.
Cargo Master
Joined: Apr 2007
Posts: 2,333
Likes: 1
From: St. Louis, Mo.
Comfort cooling temps should be normally 20-30* diff. between air in & air out. I would close all doors & windows and let it run on max cool for about 10 minutes & then check your temps. So many factors play into auto cooling, mainly solar & poor insulation.also is vehicle in the sun or shade when doing your testing, this makes a difference. Remember the faster you move the vehicle the more air is moved across the condenser coil, the more efficient the system operates.. 62* outlet isnt bad if its 100* ambient temp.Also check to see if suction line (cold line) going back to compressor is good & cold, like an ice cold beer can on a hot humid day. Let it run at least 5 minutes b4 checking the line temp.
Lead Driver
Joined: Dec 2003
Posts: 5,250
Likes: 42
agreed!!- and the next best thing besides to the heater core shut-off valve, is to add an electric fan on your condenser. they usually run ~$50 at any auto parts place.
these were the first things done to old green when she was adopted, as this south texas heat is absolutely brutal (100+ everyday). hopefully tropical storm Don will bring some relief in the next couple of days.
these were the first things done to old green when she was adopted, as this south texas heat is absolutely brutal (100+ everyday). hopefully tropical storm Don will bring some relief in the next couple of days.
Cargo Master
Joined: Oct 2009
Posts: 2,500
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From: South Carolina
Senior User
Joined: Mar 2009
Posts: 331
Likes: 0
From: Pekin,Indiana
Bitterbeard Said that he flused the Evaporator with water how exactly was this done? Could you just blow it out with a air hose?
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Fleet Mechanic
Joined: Jul 2005
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From: Southern Colorado
My IR heat gun said 'do not use to measure air temperatures' and the kit included a probe-type thermometer (shown in some of these postings). IR heat guns are designed to measure the temperature of a surface, and the area measured varies with the distance of the gun to the surface.
If your A/C was putting out 7 degree air, there would be icicles forming on your dashboard and the entire A/C system would soon ice up and put out virtually no cold air at all.
If your A/C was putting out 7 degree air, there would be icicles forming on your dashboard and the entire A/C system would soon ice up and put out virtually no cold air at all.
Posting Guru
Joined: Jan 2007
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From: Gilbert Az.
Jim
...& fat Monty
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