my 3000 gt had a leak in the a/c hose and i need to charge it .r12 is so over priced,can any a/c techs tell me for shure if i can convert from r12 to 134a w/o any major changes,with the exception of e-vac(cleaning out a/c system)..i read and hear so many differant stories,don't know if i should try this change over..thanks mike
2006-08-10 04:32:43 · 7 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
yes flush system and change fittings called a retro kit any auto parts store has em and then pull a cavvumn on it for a hour or so then add oil and 134a only use about 70% of what it caled for for r-12.done several hundred retro's
2006-08-10 04:40:05 · answer #1 · answered by michael_stewart32 4 · 1⤊ 0⤋
yep, you can do it. You have already been given good info I will just add to it. 134-A is not as efficient as r-12, it gets hotter faster and takes more to cool it. I have only ran into maybe one car and I can't remember what it was that didn't have enough condenser to make it work properly. Most rigs will be ok but like previously mentioned, only recharge it with about 75% of the r-12 recommended charge. If your condenser is small or buried deep in the cowling you might get high readings on the gauges and not be able to get them down which would mean that your a/c will not get as cold as you would like it. If this happens it may be possible to add an electric fan in front of the condenser behind the fascia. Another option is to replace the condenser. The new replacements are usually 134 friendly. They are made with more capacity and more efficient cooling capabilities.The only reason I felt like telling you this is because the 3000 is very compact and everything is pretty tight in the engine compartment and your car could be a candidate for this type of problem. Being that it is a transverse v-6 means that you do have one exhaust manifold relatively close to the radiator area which creates a substantial amount of heat up front. Other than that I have never had a problem with a retrofit. Remember to get the system cleaned out thouroughly. You want to remove as much of the mineral oil as possible and replace it with ester oil only, not pag. You can remove the oil with a flush solvent, I always used dura-141. Good luck.
2006-08-10 15:39:37 · answer #2 · answered by shel_bug66 4 · 1⤊ 0⤋
actually if you've had a leak, I'd recommend replacing the reciever/drier and the expansion valve.
The reciever/drier sucks all the moisture out of the system, and if it's a had a leak, then all the moisture will get sucked from outside into the reciever/drier and it won't function properly.
The expansion valve have had problems sticking and causing a blockage in the system. So anytime I've got the system open with a car that has one on it, I replace it.
2006-08-10 12:55:12 · answer #3 · answered by michael081278 4 · 1⤊ 0⤋
If your R12 still works well, don't do it, because R134 doesn't cool as well. If it isn't working very well changing over is the way to go.
2006-08-10 11:51:59 · answer #4 · answered by y2bmj 4 · 0⤊ 1⤋
Yes it is done all the time.
2006-08-10 11:50:24 · answer #5 · answered by Mike Hunt 5 · 0⤊ 0⤋
i dont know, you must ask MITSUBISHI service centre first!!!!!!!!
2006-08-17 05:22:42 · answer #6 · answered by Anonymous · 0⤊ 0⤋
go shel_bug!!!
2006-08-16 23:15:07 · answer #7 · answered by ndredrider 2 · 0⤊ 0⤋