A/C questions
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Junior User
Joined: Nov 2003
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A/C questions
Ok, first off I admit that I have no clue about A/C, other than you are suposed to turn it on and it should blow old air. Mine blows cool, but smells like old stale river water. What I have found out is that it uses R12 and every shop in town is excited to "change over" to the new stuff. well at 1500$ they should be happy to do it. I did find one shop that is willing to refill it for about 100$, as long as I check it for leaks. I went to the autoparts store and all they have as far as leak check is for the new stuff. Is there a dye kit for the R12 systems? Also if I have to bend over and change to r134a do i get any benifits out of this other than lots and lots of new parts and being able to rechage it easy if it ever happens again
Freshman User
Joined: Apr 2004
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R12 won't make your A/C smell like river water. Your problem is mold and debris on your evaporator, and failed evaporator box seals allowing standing water in your box or not letting condensated water from the evap. to drain out of the bottom of the box.
To properly fix, remove the evap. from the truck, clean and reseal. Then recharge with R134.
To properly fix, remove the evap. from the truck, clean and reseal. Then recharge with R134.
New User
Joined: Apr 2004
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autozone has a change over kit for about 40 to 60 dollars you could do youself but you will have to have someone run a vacumn on it ask around alot of techs out of work they can pick up acouple of bucks make sure you check that evaporator box ill bet its pluged with mud
Freshman User
Joined: Oct 2001
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From: ohio
check your drain and then pull your blower motor and flush the evap coil and box with the garden hose till all the crap is washed out.If you have an air compressor blow as much water out of the coil and put the blower motor back in and run it.
Freshman User
Joined: Feb 2004
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From: Sealy TX
Id go with Freeze12 instead of R-134a I have done a lot of conversions and they dont work out that well unless you get a 134 compressor and a self adjusting orfice tube. 134 requires a little more high side pressure to work properly, Id just do like buzzer said and vaccum out the system and recharge with Freeze 12, It a little more expensive than R-134A but Is more compatable with an R-12 system.
Temporarily Deactivated
Joined: Aug 2003
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You got some good advice here, but I wanted to add for other people who may read this thread and are thinking it is A/C season:
If the refrigerant leaked out of your system, some oil came with it and moisture got in. You need to check the oil level and add if necessary. Look for oil where the leak is. If you recharge your system with moisture in it, it will self-destruct. A/C systems are not very complicated, but if you cut corners, you have to be pretty lucky to get good results. If you want to learn, read about subcool and superheat. Learn about sensible heat and latent heat. Learn the difference between a system with an orifice vs an expansion valve. There are some good sites on the internet, use google. HVAC-talk is one. Aircondition.com may be worth a look.
If the refrigerant leaked out of your system, some oil came with it and moisture got in. You need to check the oil level and add if necessary. Look for oil where the leak is. If you recharge your system with moisture in it, it will self-destruct. A/C systems are not very complicated, but if you cut corners, you have to be pretty lucky to get good results. If you want to learn, read about subcool and superheat. Learn about sensible heat and latent heat. Learn the difference between a system with an orifice vs an expansion valve. There are some good sites on the internet, use google. HVAC-talk is one. Aircondition.com may be worth a look.
Last edited by HardScrabble; Apr 19, 2004 at 09:24 AM.
