AC Not Working?
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New User
Joined: Feb 2014
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From: Fort Worth
AC Not Working?
Hey guys, I've had a few days in the 85's here and tried out the ac and its not blowing cold. Any Ideas on what to look for? I've heard you can't recharge the R-12 systems anymore due to fed. Regulations. Anyone know how to rig it to run the R-134a? or would i have to retrofit it? My wife's on my *** about spending money on this truck and any kind of advice that would save me some $$ but be nice.
Logistics Pro
Joined: Apr 2005
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R12 can be had if you have the certificate and it's costly. So, yes, converting to R134A is what we have to do.
You'll need:
R134A adapter fittings.
R134A
New receiver/dryer
O-Ring kit
Orifice tube
AC flush
Ester oil. (PAG if you are 110% sure you got all the residue of the R12 out of the system)
Flush the system, install adapter fittings, new receiver, orifice tube, o rings, hoses if necessary. Add oil. Assemble. Pull a vacuum. Charge with R134A. Stay cool.
You'll need:
R134A adapter fittings.
R134A
New receiver/dryer
O-Ring kit
Orifice tube
AC flush
Ester oil. (PAG if you are 110% sure you got all the residue of the R12 out of the system)
Flush the system, install adapter fittings, new receiver, orifice tube, o rings, hoses if necessary. Add oil. Assemble. Pull a vacuum. Charge with R134A. Stay cool.
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New User
Joined: Feb 2014
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From: Fort Worth
Any idea what kind of price I'm looking at for that? I could do all the work at my dealership but I'd need the parts,oil and R-134a.I have a certificate for buying ref. so I'm good there.
Logistics Pro
Joined: Apr 2005
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If you can get R12 you might want to, it'd be less work and the stuff does work better.
As far as the refit:
None of this stuff cost much, the refrigerant is the costliest assuming your hoses are good. O-ring kit >$10, Receiver/dryer +/- $25, Ester oil >$10, Flush right around $10, orifice tube $3, fittings +/- $20.
Of course you'll need or have access to a vacuum pump and an AC manifold (gauge set).
As far as the refit:
None of this stuff cost much, the refrigerant is the costliest assuming your hoses are good. O-ring kit >$10, Receiver/dryer +/- $25, Ester oil >$10, Flush right around $10, orifice tube $3, fittings +/- $20.
Of course you'll need or have access to a vacuum pump and an AC manifold (gauge set).
Thread Starter
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New User
Joined: Feb 2014
Posts: 22
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From: Fort Worth
If you can get R12 you might want to, it'd be less work and the stuff does work better.
As far as the refit:
None of this stuff cost much, the refrigerant is the costliest assuming your hoses are good. O-ring kit >$10, Receiver/dryer +/- $25, Ester oil >$10, Flush right around $10, orifice tube $3, fittings +/- $20.
Of course you'll need or have access to a vacuum pump and an AC manifold (gauge set).
As far as the refit:
None of this stuff cost much, the refrigerant is the costliest assuming your hoses are good. O-ring kit >$10, Receiver/dryer +/- $25, Ester oil >$10, Flush right around $10, orifice tube $3, fittings +/- $20.
Of course you'll need or have access to a vacuum pump and an AC manifold (gauge set).
Senior User
Joined: Aug 2010
Posts: 373
Likes: 1
All the parts should be available at any local auto parts store (Autozone, Advanced, O'Reilly, Etc.) either as a kit or individually. Here is a couple of threads on the subject:
https://www.ford-trucks.com/forums/9...stem-help.html
https://www.ford-trucks.com/forums/1...-question.html
Mark
https://www.ford-trucks.com/forums/9...stem-help.html
https://www.ford-trucks.com/forums/1...-question.html
Mark
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Tuned
Joined: Jul 2012
Posts: 426
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From: Topeka,Ks.
If it was working recently, and or you're sure you don't have any leaks, you could throw a can of Freeze12 in it. You can get it also with a oil charge added. See what it does. I think the capacity is 2.75 lbs. You'll want a little less for Freeze12 (R134A). Freeze12 is compatible with R12 and R12 systems. Not the ideal way to do it. But if you don't have any leaks...Check how much static pressure you have (engine off) on the low side. If you have 50psi chances are you'll be OK.
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i ain't rite
Joined: Mar 2005
Posts: 65,565
Likes: 5,601
From: Marlboro Mental Hospital.
if it just needs a recharge it will only cost you around $60 to do it with R-12.
if you do the refit to R-134A it will cost you at least twice that, and 134 does not work as good.
all my pre 93 vehicles still have R-12 in them.
if you do the refit to R-134A it will cost you at least twice that, and 134 does not work as good.
all my pre 93 vehicles still have R-12 in them.
Junior User
Joined: Sep 2009
Posts: 54
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From: Northern Az
They have a new product called r-22 or something 22 that will mix with either 134 or 12. It works better than both and it is cheaper. Also the molocules are bigger than r 134 so if you have a very small leak, this stuff lasts longer than r-134. I did one of my trucks last year, and used it just the other day and it is still blowing nice and cold.
P.S. I went out and checked in my shop, I had a can left over. The stuff is called Enviro-safe. Do a search and there web site will pop up. Good luck Van
P.S. I went out and checked in my shop, I had a can left over. The stuff is called Enviro-safe. Do a search and there web site will pop up. Good luck Van
i ain't rite
Joined: Mar 2005
Posts: 65,565
Likes: 5,601
From: Marlboro Mental Hospital.
enviro safe in illegal for use in the united states.
it is a hydrocarbon based refrigerant, with the primary ingredient being butane. it is highly flammable.
the alternative is Freeze12, a mixture of R-12 and R134-A
it is a hydrocarbon based refrigerant, with the primary ingredient being butane. it is highly flammable.
the alternative is Freeze12, a mixture of R-12 and R134-A
Junior User
Joined: Sep 2009
Posts: 54
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From: Northern Az
Dont know were you came up with this. It is not only legal, it has no butane, is approved and recommended by several Government sorces. I found out about it from a buddy of mine who does maitainance for the Forest Service. They run it in all of there vehicles. It is also for sale at Grainger and on e-bay as well as other outlets. You must be thinking of another product.
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New User
Joined: Feb 2014
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From: Fort Worth
I bought this truck in the beggining of feb. so it was to cold to test out the A/C but I'm gonna see if i can do a pressure test tonight. Low side service valves on the accumulator right? If it's just low how can I put more ref. in it without a machine? I'm not to keen on using cool in a can at autozone or orilleys. I'd like either R-12 or a conversion.
i ain't rite
Joined: Mar 2005
Posts: 65,565
Likes: 5,601
From: Marlboro Mental Hospital.
when i got my certification many years ago, enviro-safe was used as a replacement for R-12 back in 93-94 it was 75% butane and worked very good.
but it was also very flammable, and cause a few fires after the vehicles were involved in accidents with refrigerant leaks.
for that reason hydrocarbon refrigerants were declared non DOT approved and illegal for use.
i just looked at the enviro-safe MSDS, and it still has a very dangerous fire and explosion hazard rating.
Low Flammability Limit:2.6%, Upper Flammability Limit: 9%
Fire and Explosion Hazard: Flammable vapor may form if allowed to mix with air. Accumulation of gas is an ignition hazard. Vapors are heavier than air and may travel to an ignition source.
but it was also very flammable, and cause a few fires after the vehicles were involved in accidents with refrigerant leaks.
for that reason hydrocarbon refrigerants were declared non DOT approved and illegal for use.
i just looked at the enviro-safe MSDS, and it still has a very dangerous fire and explosion hazard rating.
Low Flammability Limit:2.6%, Upper Flammability Limit: 9%
Fire and Explosion Hazard: Flammable vapor may form if allowed to mix with air. Accumulation of gas is an ignition hazard. Vapors are heavier than air and may travel to an ignition source.