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Air Conditioning

snowmobillsnowmobill Posts: 1
edited March 2014 in Mercury
what type refridgeration does a 93 cougar use?
is it the older type or the new 22


  • ChingCChingC Posts: 11
    Any suggestion for retrofitting R12 to R134a? pro's and con's?
  • gusgus Posts: 254
    Cost may be prohibitive, depending upon your budget, and it seems to me that R134 just doesn't get as cold (may be personal prejudice/preference).
  • guitarzanguitarzan OhioPosts: 799
    Wow, Bill, if you are still here: Ask the dealer if you haven't yet. The switch to the new freon happened just around the time that car was produced. My guess is that model has the older freon, but I'm not sure where the cutoff was.
  • borrservborrserv Posts: 2
    To find out what type of refrigerant is being used in any vehicle look for the information sticker usually found by the compressor or radiator. This will give you the type and amount needed. You need to be EPA certified to purchace R-12. R-134A is unregulated so anyone can buy it.Also if you can't find the sticker the dealer should be able to tell you. Retrofitting from R-12 to R-134A is not for the novice. You will need specialized tools; Electronic or Ultraviolet leak detectors, Vacume pump, Gauge manifold, Weight scale, Oil refractometer, Recovery machine, to name a few. Multiple compressor oil changes refrigerant recovery and recharges will be needed to reduce the old mineral oil to acceptable levels, good luck.
  • borrservborrserv Posts: 2
    Gus is right. R-12 has a boiling point of -21.6 degrees F, where R-134A boils at -15.1 degrees F. resulting in colder evaporator temperatures.
  • RichinKsRichinKs Posts: 416
    I have an 89 camero. The airconditioning seems to be working fine, but I was looking for the sight glass to see whether or not there are bubbles an indication whether or not it may need a little charge. I cannot find it. Has GM done away with the sight glass on some of the last R12 air conditioners? Any body got a clue? .... Rich
  • biga2biga2 Posts: 1
    retrofit from freon R12 to 134A should not be performed unless, you are changing out a major component such as a compressor, evaporator, or condensor, receiver/drier, and even then it is very touchy, and can create many problems.

    if you have an R12 system and lost freon, get in touch with a quality automotive ac shop, they will thoroughly test for leaks and repair accordingly, and refill with R12

    dont let anyone tell you R12 is no longer around
    it is still available through ac shops, but is no longer being produced. R12 is expensive but if your ac system is in good shape, no crap in the system then just have the leak fixed and refilled.

    to learn more about ac system conversion go to this guy has his own ac service shop for 25 yrs and hs a lot of info and guidance on his web site.

    i learned the hard way, had my 92 nissan stanza converted to 134a for $150 'cause i had a r12 leak, local guy said it was a straight conversion no problem, i wound up with a clog in the thermo expansion valve/evaporator, which had to be changed out, because i could not service the valve and it is an integral parts of the evaporator. the dealer service tech said that in a conversion to 134a the condensor is too small for 134a and that now i must baby the ac system, because the condensor can not cool the 134a quick enough.
  • georgedegeorgede Posts: 40
    I have a new 99 Isuzu SUV and always park under
    a large tree most of the day (100 degrees cooler as I go home). My question is, quite a few times have found lots of small leafs around the windshield area. Will this be a problem clogging
    the A/C over a period of time???
  • gusgus Posts: 254
    It's not going to clog the a/c per se, but your vent system will become clogged with leaves. It's not unusual to pull the kick panels on some cars and find a bunch of leaves and crap around the heater box. Sometimes you'll hear leaves in the heater fan, thwacking around, or forcing themselves through the vents. A few small leaves probably won't be a problem, but people who live where pine needles and stuff accumulate heavily on their cars may have a problem.

    Another, different problem you want to take care to avoid is having your car's drainage system clog up. This is the system that allows water to go off the windshield into the "vents" at the base of the windshield, through the car, and down to the street below, ususally via a hole at the base of the car's frame. Leaves that get stuck in this drainage system can cause water to get trapped in the frame of your car, where it'll swish around and sometimes find its way into the car.
  • georgedegeorgede Posts: 40
    Thanks Gus, I may put a small cover over that area
    like that I'll still stay cool. It makes a big
    difference even with tinted windows.
  • carlookcarlook Posts: 1
    I have a 95 Celica-150,000 miles. The AC went out and I went to the trusty independent mechanic. He said the compressor was bad-$850 to replace it. About a $1000 later, he says "these imports" need everything replaced (condenser,evaporator, expansion valve) in order to keep the AC from "clogging up". The extra parts are $775. Now, is this normal in AC repair and will the AC work only intermittently without the extra parts or am I headed for long time trouble if I don't replace the other parts. The AC now takes time to begin cooling , but does work.
  • xfilesxfiles Posts: 132
    It is unusual for everything in the air contitioning system to go bad, usually there is only one weak point. As far as spending $850 for the compressor, try the next time picking one up at the auto recyclers (about $75, including a 6 mth warranty). This mechanic that wants you to replace everything is obviously a weasel trying to take you for some more money. Maybe you should have kidded him and said..."maybe everything else on the car needs replacing too".

    After the compressor is repaired the Toyota manual specifies a procedure that must be followed to ensure the entire system is dry, how much a charge it needs, etc. One mechanic I saw was doing it the same way with every vehicle, and adding the same charge to them all, obviously not right. When it comes to air, stick with Toyota. I bet that repairman did not do things correctly.
  • spudmanspudman Posts: 32
    I have an 88 Beretta with 49,000 miles on it. The a/c has always worked great till now. Cold air still comes out of the vents but the force of the air coming out has decreased somewhat. When the fan is turned up to the highest setting, the sound of the air stream gets louder but the air stream coming out doesn't increase accordingly and the car is not cooled very well. Any ideas
  • blugillblugill Posts: 36
    Clean out the vents. leaves and the like can get in there, and restrict airflow.

    Those metal slots right in front of the windshild are where the air comes in, clean them out, and you should be fine.
  • bobbyh2bobbyh2 Posts: 2
    is there a difference between the amount of outside air used by Japanese cars during the recirc setting (I've been told none) and US cars on their Max Air setting (I've been told 10-20%)?
  • bobbyh2bobbyh2 Posts: 2
    is there a difference between the amount of outside air used by Japanese cars during the recirc setting (I've been told none) and US cars on their Max Air setting (I've been told 10-20%)?
  • spudmanspudman Posts: 32
    Thanks for your advice. I did clean out the vents by the windshield with only negligible improvement. A car repair shop has my car at this moment. As it turns out the air flow was being restricted. Apparently a critter or critters have been nesting in my car and have clogged the air flow in numerous places. They (the car shop)have taken out a cubic foot or more of material so far and are still working on it. This is the second time I've have problems with animal(s) living in this Beretta. Several years ago I had to have all the spark plug wires replaced because they had been gnawed so badly. For a while I was even keeping moth balls under the hood and setting traps. It's times like this that make me wish I had a garage.
  • I just acquired the car, seems in great shape...however, when the a/c is on, there's a regular hiss every few seconds that lasts a few seconds coming from under the front passenger dash.

    any ideas: vacuum tube leak, evaporator, leaves??

    about the have it checked out; the a/c cools fine and comes out in every vent combination
  • lynnflynnf Posts: 1
    My 94 Galant's A/c is out, I was wondering if it would be a better, cheaper idea to install a new R-134 my self or to get the current R-12 replaced by a technician?
  • dwanndwann Posts: 5
    About early srping, I noticed the AC wasn't cooling properly, so my wife took it to the dealership. The repairman said, and I am not making this up, "...because it is a darker colred car, the AC won't cool the car down as well as with a lighter colored vehicle." Needless to say, I won't take the car to this dealership again!! Anyway, I got some R-134a and recharged the system with 1 can. Now the car keeps cool for about an hour, but after that, nothing but warm air comes from the vents. Did I not put enough refrigerant in? Is my compressor shot? I now commute in this car over an hour each way and with the weather being as hot as it has been, I am suffering big time!
  • Do auto parts stores sell R-134a over the shelf to everyone. I remember when R-12 was available everywhere. To anyone, you could even buy little refil kits that would pierce the can and service your system.
  • Chevy05,

    Yes, anyone can buy it over the shelf. That's what I ended up doing with my Camry. I trust no Toyota mechanic yet except myself, and I'm a computer geek.

  • Does anyone have suggestions as to how to get rid of and/or avoid mildew odor from an auto A/C system?


  • turn off your ac about two or three minutes before you reach a destination. Then run your heat up for a minute to dry the duct work out
  • To Automobile 2. I have just had my evaporator, condenser and o rings replaced on my 1996 Eagle Vision TSI. The tech claimed that R134a has a tendency of breaking down these parts in all cars. My evaporator was replaced in 1998 within an extended warranty to 70,000 miles (US). I was also given a credit for this most recent evaporator repair. Has anyone had this same experience.
  • The clutch of air condition compressor on my Villager (95) made loud metal click sound. It looks to me that the clutch was partially engaged sometimes. Any suggestion?
  • gusgus Posts: 254
    Some clutches will make a click sound when they engage. A/C compressors do not stay engaged all of the time. They go on and off at fairly regular intervals, while the A/C is on.
  • Thanks, GUS.
    I checked A/C compressor clutch. It works fine when it was turned on and off. That means the clutch works. When the A/C is on and the temperature reaches the setting point, the clutch should be off. However, the clutch on my van keeps on and off at a rate of 2 ~ 3 times per second. It looks to me that the controller is confused near the setting point (temperature). Is it a sensor or computer (logical circuit) problem?
  • triftrif Posts: 4
    What is the usual time for an A/C system to make it before needing a recharge?
This discussion has been closed.