Any air conditioning experts in here?
04-30-2007, 04:35 PM
#11
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Re: Any air conditioning experts in here?
Originally Posted by ryan89crx
not technically an acceptable way of checking freon anymore, although it works just fine 
does it get cold for a bit and then hot? if it just never gets cold, i wouldnt think that the heater core is the problem, since it takes a bit for the coolant to get warmed up. normally the symptoms are cold air, then about 20mins later, the temp starts rising. although i never rule something out until i know for sure.
is your condenser plugged up? fins all bent to ----? what about the evaporator? rats nest arent uncommon, and cause your a/c to work like ----
does it get cold for a bit and then hot? if it just never gets cold, i wouldnt think that the heater core is the problem, since it takes a bit for the coolant to get warmed up. normally the symptoms are cold air, then about 20mins later, the temp starts rising. although i never rule something out until i know for sure.
is your condenser plugged up? fins all bent to ----? what about the evaporator? rats nest arent uncommon, and cause your a/c to work like ----
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04-30-2007, 06:34 PM
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Re: Any air conditioning experts in here?
The coldest it ever got was a butt hair under 50*. When I come to a stop it rises quite a bit, then goes back down slowly. It takes FOREVER to reach these temps. 
I just got one of those guages and it had 45psi in the low side of the system which it says it normal. My AC still sucks. 
I "accidentally" leaked some of the 134a out and was watching the air vent temp reading and it actually started to get cooler around ~40psi. Is that my sweet spot?
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I just got one of those guages and it had 45psi in the low side of the system which it says it normal. My AC still sucks. I "accidentally" leaked some of the 134a out and was watching the air vent temp reading and it actually started to get cooler around ~40psi. Is that my sweet spot?
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04-30-2007, 07:18 PM
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Re: Any air conditioning experts in here?
Anybody want to buy a Jeep?
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04-30-2007, 08:47 PM
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Re: Any air conditioning experts in here?
Originally Posted by Jmunk
Put the rest of the can in and see what that does, I think your still low.
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04-30-2007, 10:28 PM
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Re: Any air conditioning experts in here?
Originally Posted by Dr.Boost
After 45psi it says "DANGER, SEEK PROFESSIONAL HELP!". I was kinda amazed that this can of freon could know something like that so I decided I should stop filling the AC system.
04-30-2007, 10:54 PM
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Re: Any air conditioning experts in here?
Originally Posted by ryan89crx
not technically an acceptable way of checking freon anymore, although it works just fine
We always use the superheat and subcooling methods now, its a better way. A lot of people still use the "beer can cold" method on the suction line though.
what is the td of the evaporator?
What is the suction line temperature right before the compressor and the suction pressure?
high side pressure and the liquid line temperature? (liquid line=small line going from the condenser to the metering device next to the evaporator)
Hold the engine to 3000rpm and take the supply temperature from the vents. The cooling capacity goes up as the rpm does.
05-01-2007, 01:52 AM
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Re: Any air conditioning experts in here?
18-20 degree drop in air temp across the evap coil is the max. cooling your gonna get.
y7turbo......at least someone else here understands
Dr. Boost........
Have you check to make sure the drain line from the evap box is clear? Full of condesate it would effect air flow and cooling. Careful though, in cooler climates I've seen to trapped water turned to ice on old R12 setups.
y7turbo......at least someone else here understands
Dr. Boost........
Have you check to make sure the drain line from the evap box is clear? Full of condesate it would effect air flow and cooling. Careful though, in cooler climates I've seen to trapped water turned to ice on old R12 setups.
05-01-2007, 08:04 AM
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Re: Any air conditioning experts in here?
Originally Posted by Mista Bone
18-20 degree drop in air temp across the evap coil is the max. cooling your gonna get.
It was 100* yesterday and I was getting temps of about 50*.I'll check the drain, but I think I'm pretty much screwed for the summer.
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