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You are watching: Can r12 and r134a be mixed

My dad did the again
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His AC beginning blowing warmth air in his 90 GT. So he went and also bought R134 and included a 1/2 deserve to to the system. He to know its R-12, yet did that anyways. It blew cold air because that a few days, but now once the AC is top top the compressor starts come squeal. Any ideas? Did the royally screw up the AC system? What specifically is the procedure to convert it? that tried to redeem self by to buy guages for this reason he can tackle it himself. Any assist or input would be appreciato!THXDankstang
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he just made a system that no shop will ever before touch! he totally contaminated the system. He will certainly most most likely need a brand-new compressor amongst other things (such together dryer etc)do a find on here and also youll find out exactly how to convert. Take care,adam
90 GT black, V2 SI-Trim, Blow-Thru A/A Intercoolerstage 3 "Y" heads/ Bennett gyeongju intake, TFS#1, long tubes, 3"Pro-Dumps/H-pipe, TKO500, 3.55"s, residence made TA and also PHB, cobra brakes, 22 gallon Fuel for sure Cell, PMS tuned etc.. Developed for twisties
the R12 and R134A combine and also make a goopy mess the plugs increase everything. He"ll have to either yank out the system, or totally replace it.
(_(BIGSTIK(_( 87GT, T-tops, 72K, 302cu, GT-40P heads, EH"d Cobra upper, Fox-lake stage 3 lower, 24#rs, 70mm PRO-M MAF, 65mm TB, Scorpion 1.6" RR, F-303 cam, GT-40P headers, Dr. Gas X, Spintech sportsmans, Tremec 3550, Spec 1 clutch, 3.90 gears, MAF/A9L, 16x8 ROH SnyperHP-266.5 TQ-28687GT.com-->Possessor of the chrischona2015.org"s ideal pic
This is turning into a nightmare.Yanking out the device would need the compressor and also evaporator, or some stuff in the heater box too?Can ns junkyard a R134 device off stang or ford to litter in it?
the counter is nothing. Its simply 2 screw ~ above fittings. However the r134 you gain at most auto stores contains oil. And If he currently had R12 it has actually oil native the factory. For this reason he"s probably damaged the compressor from tooo much oil. The best you can hope for is acquire someone to complely evacuate the system and pull a good vaccum on it. Then placed the counter kit on and try it. But chances are it is fubar
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nobody would/ should (if castle know) evacuate that device for cheap. Becuase shops evacuate one of two people r-12 into one tank and r-134a right into another. If you have a mixed device (which you do) and also you contaminate their tanks they will NOT be happy. Take it care,adam
90 GT black, V2 SI-Trim, Blow-Thru A/A Intercoolerstage 3 "Y" heads/ Bennett racing intake, TFS#1, lengthy tubes, 3"Pro-Dumps/H-pipe, TKO500, 3.55"s, residence made TA and PHB, cobra brakes, 22 gallon Fuel for sure Cell, PMS tuned etc.. Developed for twisties
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the search role maybe....hahathere are countless threads on how! btw, its no cheap to perform it right.... Take care,adam
90 GT black, V2 SI-Trim, Blow-Thru A/A Intercoolerstage 3 "Y" heads/ Bennett racing intake, TFS#1, long tubes, 3"Pro-Dumps/H-pipe, TKO500, 3.55"s, residence made TA and PHB, cobra brakes, 22 gallon Fuel for sure Cell, PMS tuned etc.. Developed for twisties
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My A/C to be shot and also I move to R134A while ns was at it..I gained a new Evaporator core, (and heater core) orifice line, and dryer/accumulator. The just thing that i didn"t change is the compressor and also the condensor.... And also I had actually a girlfriend of a friend"s shop do the R 134s conversion and add the oil in ~ his shop... Grand complete was just under $600 because that parts...This is something girlfriend should shot to do yourself if you can... When my A/C first went the end this one man wanted $950 to replace just the Evaporative coil and also recharge the system!!! The evaporative coil is only like $120-150 the rest was labor... The hardest component is obtaining the dash out... Something like 50 screws holding that bastard in. It took me 2 hrs to unbolt it by myself. I had actually to obtain my dad to aid me physically acquire the dash out of the car (it"s nice bulky and not light!)....


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88 Mustang GT (AOD)(Speed density) **SOLD**
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