AuSeeker
Elite Member
It's normal, first 2 speeds barely move any air at all, actually the only one I ever use is high.
A/C issue
- Thread starter daprotege5
- Start date
It's normal, first 2 speeds barely move any air at all, actually the only one I ever use is high.
Drcoffee
Senior Member
I run mine in low because 3 & 4 are loudly obnoxious. But even on low it does move air unless its hot outside then I use 3 until its comfortable. Is your fan worn out? The fan cage may be full of dirt, lessening your air output. Or worse, home to rodents who made your vents into a mobile condominium.
Drcoffee
Senior Member
Sounds like a bad compressor. The high side should be 150 +/- depending on ambient temp. The expansion valves are pretty reliable in these trucks.
daprotege5
Member
thats what a friend suggested. since i'll be replacing it might as well replace the old condensor as well. only thing left to replace at that point would be the evaporator (hopefully dont have to anytime soon).
anything else i'm missing???
does the condensor line being cold and sweating signify anything??? just noticed it, running the a/c but a/c isn't cold at all.
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Drcoffee
Senior Member
There is a bunch of videos on recharging AC but I found this one most helpful
https://www.youtube.com/watch?v=lglPJuBXVeE&feature=youtu.be
https://www.youtube.com/watch?v=lglPJuBXVeE&feature=youtu.be
daprotege5
Member
my high side all the way from the firewall to the condensor is cold, sweating at some spots. the low side is just engine warm, and at the condensor connection is actually hot, like to the touch.
still sound like the compressor???
still sound like the compressor???
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Drcoffee
Senior Member
Sounds like a dying compressor. Its working only not so well. So you want to replace it before it self destructs. If it seizes, you will have to flush the whole system. I dont think rebuilds last very long. Id almost try to find a compressor from a salvage yard before buying a new chinese or rebuilt unit. Anything oem used is better than cheaper new stuff.
daprotege5
Member
went ahead and ordered the denso unit from rockauto, as well as a new condensor, the valves for the low/high connections, and a freakin o2 sensor, changed the drivers side and now the passengers threw a code. so ordered the parts should be here in a couple days.
So basically same steps as before, once i have everything connected. vaccumm for a good 45 mins, close the lines, turn the truck on and than open up the high side and add freon..
So basically same steps as before, once i have everything connected. vaccumm for a good 45 mins, close the lines, turn the truck on and than open up the high side and add freon..
daprotege5
Member
Rockauto listing showed factory oiled for the denso compressor I bought, box mentions nothing of oil, should I be worried?
Drcoffee
Senior Member
When filling, Open the low side only. Do not open the high side. That freon can will explode with 225 psi.
Drcoffee
Senior Member
When the new compressor arrives, empty out the oil. What you will do next is remove the old compressor, dump out the oil into a cup. Then put the same amount of new oil into a different cup with fresh oil. That is the amount you need to add to the new compressor. It may or may not be the same amount as what it was shipped with.
daprotege5
Member
sorry meant the low side. do i vaccumm with the oil in there???
Drcoffee
Senior Member
Yes. Add the correct amount of oil to the compressor before installing it.
Great video on how to quickly add PAG oil to the AC system.
https://www.youtube.com/watch?v=vGpM8va2XFg&feature=youtu.be
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daprotege5
Member
so vaccummed for a little over an hour, held at 25.
locked both valves.
connected the can of freon, bleed the line of air
turned the truck on, thought the a/c was on
went back and opened low side, than realized i didn't even turn the a/c on
turned a/c on
during the filling of one can, the compressor kicked on
ghettoed rig my tiny scale since it read oz, read 22oz, emptied 9-10oz out of can #2.
gave it a couple seconds and the high side started building pressure was in the 275-300 range .
went from one side during can #1 being cool
to now both sides are cool
i took it for a spin around the block seems to be doing its job.
will post back on an actual hot day, as it rained here in florida and it was a bit cooler than usual.
locked both valves.
connected the can of freon, bleed the line of air
turned the truck on, thought the a/c was on
went back and opened low side, than realized i didn't even turn the a/c on
turned a/c on
during the filling of one can, the compressor kicked on
ghettoed rig my tiny scale since it read oz, read 22oz, emptied 9-10oz out of can #2.
gave it a couple seconds and the high side started building pressure was in the 275-300 range .
went from one side during can #1 being cool
to now both sides are cool
i took it for a spin around the block seems to be doing its job.
will post back on an actual hot day, as it rained here in florida and it was a bit cooler than usual.
daprotege5
Member
my dad forced me to wrench when i was young, nothing like reaping the benefits of it as i'm older. i kinda hate anyone working on my cars, and its rare i'll take it somewhere for help. but..........
the forum is definitely a big blessing, love that we can all share knowledge.
appreciate the help fellas!
