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-   -   AIR CONDITIONING '82 240D (http://www.peachparts.com/shopforum/alternative-fuels/342538-air-conditioning-82-240d.html)

tinacunningham13 08-14-2013 05:51 PM

AIR CONDITIONING '82 240D
 
I purchased my great MB a year ago. I know when I turn the air conditioning on, it feels pretty cool, not cold on the feet.
I want to get my refrigerant checked. It does not seem to have a leak.

I am hearing different things on having R-12 added to the R-12 that is in the system, or having HVAC guy remove R-12 and refill with the new 134?

I heard if possible stick with the R-12 when I can find some. Others say the newer refrigerant is good.

Please give me feedback on experience.

TC

Mölyapina 08-14-2013 06:22 PM

Hi Tina,

You may have better luck with this is you post it in the main discussion (Diesel Discussion) -- a lot of more folks look at.

To answer your question, though, a system that has R12 should only be recharged with R12. But how do you get R12? That's the hitch. R12 has not been available to the general public since the early 90s, and it is expensive (~$30/lb). You can find it on Craigslist, but then you will see many ads that say that you need a 609 certification. This is because it is not legal for you to buy it without a certification from the EPA known as the 609. The good news is that you can do the reading online and take a test for the most basic certification -- all that you need to buy R12 -- for $25. I'm working on the certification this month.

However, if you have lost R12, you have a leak, and it will quickly get expensive to be recharging R12 all the time. You will want to find the leak. Auto parts stores sell leak detection kits -- however, I don't recall if they can only be used with R134a. Anyway, once you have found the leak, evacuate your system into an evacuation cylinder, which you can find for ~$30 if you buy the single-use one. Then replace the part that was leaking, and fill your system back up. If the hoses are showing their age, you may just want to replace everything at once.

You can also use R134a, but that is more involved. This is where I would suggest you ask in Diesel Discussion, as I don't know enough yet to competently comment on it. Beware, you will get a barrage of different opinions ;).

SD300 12-25-2013 02:27 PM

a/c cold air only comes off vent on mid level, some comes out the defrost vent, definitely won't give u cold feet.
Go check other cars first.
u can spend a few bucks still won't have your feet cold.

Quote:

Originally Posted by tinacunningham13 (Post 3192204)
I purchased my great MB a year ago. I know when I turn the air conditioning on, it feels pretty cool, not cold on the feet.
I want to get my refrigerant checked. It does not seem to have a leak.

I am hearing different things on having R-12 added to the R-12 that is in the system, or having HVAC guy remove R-12 and refill with the new 134?

I heard if possible stick with the R-12 when I can find some. Others say the newer refrigerant is good.

Please give me feedback on experience.

TC


Left Coast 12-31-2013 12:38 PM

Quote:

Originally Posted by SD300 (Post 3260243)
a/c cold air only comes off vent on mid level, some comes out the defrost vent, definitely won't give u cold feet...

Not in a 240D. AC air can be directed to the floor vents.


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