How to make my AC cooler?
08-20-2007, 10:53 AM
#1
How to make my AC cooler?
Ok I replaced my AC compressor,dryer,orfice tube, and AC works COLD. But when I got home, the car sat in the sun for a long time before I used it again, and when I turn the AC on, it takes a LONG time to get cold. But when theres shade outside and not so hot its gets cooler alot faster. How can I always keep it cool all the time or faster in Hot weather?
08-20-2007, 10:55 AM
#2
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St. Jude Donor '05
It takes a while to cool down a hot interior, especially if its dark color
08-20-2007, 10:59 AM
#3
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The cars with glass tops take longer to cool down, too.
Also, keep in mind the A/C system pressures will also vary due to ambient temperatures and relative humidity.
As ambient temp and humidity go up so do the system's pressures and the A/C's vent outlet temp.
Also, keep in mind the A/C system pressures will also vary due to ambient temperatures and relative humidity.
As ambient temp and humidity go up so do the system's pressures and the A/C's vent outlet temp.
Last edited by onedef92; 08-20-2007 at 11:04 AM.
08-20-2007, 11:21 AM
#5
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St. Jude Donor '05
Noticed a huge difference replacing the glass top with the solid. Much cooler inside.
08-20-2007, 11:28 AM
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Race Director
08-20-2007, 11:29 AM
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St. Jude Donor '05
Holy smokes!! Where is that located?
08-20-2007, 11:39 AM
#9
Le Mans Master
Picture is the Evaporator Core - It has a foam filter from the factory and often, when they look like that, it's leaking with the oil destroying the filter and restricting air flow.
Assuming you have the equipment, post the operating pressures and vent temps noting the outside air temp. You might also determine the cutoff threshold for the low pressure switch. Put it on MAX and disconnect the Blower Motor. That will drop the low side. Note the pressure the compressor cutsoff at.
Assuming you have the equipment, post the operating pressures and vent temps noting the outside air temp. You might also determine the cutoff threshold for the low pressure switch. Put it on MAX and disconnect the Blower Motor. That will drop the low side. Note the pressure the compressor cutsoff at.
08-20-2007, 11:52 AM
#10
Safety Car
There is a limit to how cool you can go.
If the evaporator core is lower than about 32*F, it will freeze the moisture on it and plug up.
32* at the evaporator core translates into about 40* at the vent outlets.
If you can achieve 38*~ 40* at the vent outlets in recirclulate with the blower going full blast, that is about as good as it gets.
Tom Piper
If the evaporator core is lower than about 32*F, it will freeze the moisture on it and plug up.
32* at the evaporator core translates into about 40* at the vent outlets.
If you can achieve 38*~ 40* at the vent outlets in recirclulate with the blower going full blast, that is about as good as it gets.
Tom Piper
08-20-2007, 12:27 PM
#12
Race Director
08-20-2007, 01:30 PM
#13
Le Mans Master
In south Florida, after sitting in the sun all day, the interiors get real hot. Vettes have a large glass exposure (windshild, two side windows and the hatch) to the sun. A dark, reflective tint helps alot.
08-20-2007, 05:00 PM
#18