Question about 1993 BMW 3 Series

1 Answer

Refrigerant What do I need to do to change from using R12 to 134?

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 5 Answers

I need to do the same thing to mine and it's currently being converted by a mechanic. I've been told that it's easy to do and fairly cheap. I can let you know what it requires when I get my car back...that is if someone doesn't answer this question before I get back to you.

Posted on Jul 11, 2008

  • zagitazz Jul 14, 2008

    OK, I'm back. It turns out that my 1993 BMW 318i was already converted to use R134a refrigerant. I was able to find a Pelican Technical article that may be helpful. The portion of the article that I copied and pasted below is toward the end of the original article. See this site for the original article:

    http://www.pelicanparts.com/bmw/techarti...






    Figure 1

    This
    great starter A/C kit from Interdynamics contains three cans of R134a
    refrigerant and oil and is specifically designed to replenish older
    cars that may have a few small leaks in the O-rings of the air
    conditioning system. The kit is available for about $35 at most general
    automotive stores and has everything you need to recharge your R134a
    air conditioning system. It includes a can adapter valve, an in-line
    pressure gauge, and several adapters used for converting old R12
    systems to the newer R134a fittings.



    Figure 2

    This
    photo shows the location and orientation of the A/C ports on the 1993
    and later E36 cars. (Earlier E36 cars may have R12-based or other
    systems.) The A/C ports normally have black plastic covers that simply
    screw off (inset). The low side (the side where you attach the gauge
    and refrigerant) has the smaller port adapter and is attached to the
    larger pipe (yellow arrow). The high side (used primarily for checking
    the compressor during diagnostic testing) has the larger adapter (green
    arrow) and a smaller diameter pipe.



    Figure 3

    With
    the engine running, connect the gauge to the low-pressure port on the
    A/C system. The high side has a larger adapter, so you can’t
    accidentally attach the gauge to the wrong port. With the gauge
    attached, you can now turn the valve to add more refrigerant to the
    system. In the photo inset, you can see the pressure for this A/C
    system is exactly where it should be—in the middle of the white range.
    Remember to use heavy-duty leather gloves and eye protection when
    working around A/C components. It’s possible that a fitting or a valve
    may break or otherwise leak refrigerant on your hands.



    Figure 4

    Your
    hand is a pretty poor indicator of relative temperature. Use a digital
    thermometer and probe, like the one here, to get an accurate reading. A
    number of factors can affect the final temperature performance of your
    A/C system—age, quantity of refrigerant, the condition of the
    compressor or associated components, and whether the system was
    designed to use R134a, as was this 1995 325ic. During this reading, the
    outside temperature was probably around 65 degrees Fahrenheit. If you
    achieve temperatures in the mid-30s, your A/C system is working in top
    condition!






×

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Do i need to drain the freon from my car when changing the expansion valve?


You are not permitted by law to discharge refrigerant gas into the atmosphere. It has to be collected using a vacuum device and recycled. You also need gauges and the correct amount or refrigerant gas by weight, which incidentally is not 'Freon' and was banned about 20 years ago. You need a professional to work on your system.

Mar 23, 2016 | Cars & Trucks

1 Answer

Do i have to change the adopter of my toyota corrola 1992 model /refrigerant


You need R134A adaptors,both sides, & a compressor designed
for the higher pressures,as well as different oil in the
system, to convert from R12

Mar 27, 2013 | Cars & Trucks

2 Answers

What type of freon is used in a 1993 ford E350


look at the connection fitting as this was the change over period from R12 to R134 the latter of which will work of sorts but as well on the earlier system but R12 is now prohibited from sale as too polutant

Jul 30, 2011 | 1993 Ford Econoline

1 Answer

A C quit blowing cold air. Is there a kit that will replace the refrigerant? And if so would it be available at Walmart?


1991 might be an R12 system. If so finding the refrigerant will be near impossible. Federal regulations took it off the market and now an 'ozone friendly" R134a refrigerant is used. You will need to retrofit your system to use this new refrigerant. wal Mart probably doesn't carry the "retrofit" kit. You need to make a trip to your local auto parts store for the kit.

Jul 09, 2011 | 1991 Chevrolet S-10

4 Answers

What type of freon is in GMC trucks of 1987?


R12.... In 1994 R134a was required, but some changed earlier. Yours may have been converted. If the service ports are threaded it still has R12. Hope this helps.

Jul 05, 2011 | 1987 GMC R1500

1 Answer

AC cools 30 seconds then clutch disconnects. Could it be the computer?


This is perfectly normal if it is cool outside. The AC system is designed to turn off if it detects low pressure in the cooling system. Refrigerant is a gas and therefore changes pressure with temperature. If it is still doing this on a warm day, it is possible you are low on refrigerant. Please do not just add refrigerant and forget about it, fix the underlying leak. R-134a, the refrigerant your car uses, is a greenhouse gas 1000+ times more potent than carbon dioxide.

May 31, 2011 | 2000 Ford Contour

1 Answer

Basic: How do I re-charge 1989 toyota corolla air conditioning system.freon re-charger ket how to install.


Hi!!
Unfortunately, the R-12 refrigerant that your compressor used was phased out on 1994. You will need to an Automotive A/C Shop to have the system evacuated, flushed, vacuumed, retrofitted and charged with R134a refrigerant. This job requires the use of specialized equipment and according to EPA regulations must be performed by a licensed HVAC Technician.
Once your system was retrofitted, if you ever need to re-charge refrigerant. All autoparts carry easy to use, instructions included, R134a refrigerant recharge kits.
Good Luck!! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa.

Nov 19, 2010 | Toyota Corolla Cars & Trucks

1 Answer

My air conditioner blows hot air, could it need freeon and if so where would I put it?


your system uses the old refrigerant type r-12 which is no longer available. you will have to get the system change overto the new refrigerant r-134a. it will cost loads of money.

May 21, 2010 | 1992 Chevrolet Corsica

1 Answer

How do I change the a/c accumulator?


you will need a garage to discharge the system.you will need a haynes repair manual to locate the accumulator .the manual will tell how much 134 refrigerant put back in system and refrigerant oil to put back in. you will need a vacuum pump to pump system down before charging it up.WARNING WHEN WORKING ON AIR CONDITIONERS WEAR SAFETY GLASSES.THE REFRIGERANT 134 CAN DAMAGES EYES .VERY HARMFUL TO INHALE.

Apr 21, 2009 | 2002 Buick Rendezvous

4 Answers

98 Jimmy refrigerant


it should use R134 it should have a tag on the front of the hood that says what is uses. if it uses 12 than you will need to drain all the fluid and start fresh with R134

Aug 27, 2008 | 1998 GMC Jimmy

Not finding what you are looking for?
1993 BMW 3 Series Logo

Related Topics:

763 people viewed this question

Ask a Question

Usually answered in minutes!

Top BMW Experts

Fred Sops

Level 2 Expert

271 Answers

Al Clark

Level 2 Expert

290 Answers

Doberman

Level 2 Expert

246 Answers

Are you a BMW Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...