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Old 05-22-2004, 09:51 PM
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AC/ R134a question

I recently bought a 76 blazer that the ac has been converted to r134 but it has none in it. How easy is it to flush the system and refill it? I can get a 30lb or 50lb bottle (I don't remember which) for $55 at costco. I figure this is more than I need but hay, it should last me a couple years right? I think I can probably use it on my wifes 4Runner also.

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Old 05-23-2004, 06:29 AM
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You shouldn't have to flush it, just recharge the system.

Troy

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Old 05-23-2004, 06:56 AM
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If you have access to a vacuum pump and guages, I would evacuate it and check for leaks before adding any. Although the price on the stuff seems reasonable, you don't want to just add it and have it leak right out. I would put a vacuum on it for about 30 minutes or so, then shut off the pump and see if it holds vacuum. If it looses the vacuum, it will surely loose the freon. Although, that is not a sure fire way to see if you have a leak, as the pressure is higher than the vacuum, it will tell you if you have a large leak. You should also have a way of measuring how much you are getting in, and how much is supposed to be in there. You don't want to overcharge it.
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Old 05-23-2004, 04:26 PM
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d@mn if thats all it really costs then shops make a huge profit on recharging ac. At the shop i work at i know one type we use is like $400 for 30lbs. we charge like 160 bux to recharge unless you need an ubseen amount of freon, also see if you can get some dye that will help if you do have leak.
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Old 05-23-2004, 04:54 PM
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If a shop has a good reclaimer, and a technician that knows A C.
There is very good seasonal money in it . You charge the customer to remove it from there system, do the repairs, then sell it back to them. It's getting very hard to find freon now days, yet alone someone to handle it.

In the body repair business it is air conditioner season all year long.

Troy

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Old 05-23-2004, 08:03 PM
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R12 is outrageous and takes a licensed air conditioning technician to purchase, that is probably what is $400 for a 30lb jug.

Vince
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Old 05-23-2004, 10:55 PM
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R-12 is WAY more than that.

Troy
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