E30 M3 R12 to R134a A/C Conversion

In this video I explain how to convert from a dual pressure switch R12 A/C System on an early E30 or E30 M3 to a single R134a pressure switch. I also explain what other parts should be replaced and show my recharge procedure and vent temps. When you see the word "affiliate" listed beside any link in my description please know that this is a custom link and I will earn a small commission if you opt to purchase using said link. This is at no extra cost to you so it's a win all around :) Thank you!

[@gmans7859]

Glad I found this. Thank You for the vid! Gearing up to exactly this on my 325is. The car had been retro fitted some years ago but has aged.

[@icebear1935]

Great videos on your e30 m3. Keep them coming.

[@Doctor_X]

Thank you! i am doing this exact thing for my 87 325i vert. I was confused on the wiring.

[@brandohernandez614]

Great video very helpful, where did you buy the yellow connector for the pressure switch?

[@BrysonBuilds]

How much did the whole conversation cost?

[@wesleylam6625]

hello, your video is very informative. I am in the process of converting my E30 M3 to R134a, can you provide the source where to buy the ac hose with r134a valve that runs from compressor to evaporator?

[@VehicularDIY]

I actually purchased it from Husker auto parts, let me know if you need the part number.

[@GabeTran]

Do you have that part number? This is the hose that re-routes the valves so that the hood hinge doesn’t get in the way right?

[@felipecarvalho8499]

hi, I am looking for this conversion. Do you have the PN for the pipes, condenser, expansion valve, pressure switch nd compressor with brackets? thanks

[@petrolo72]

💯 why not keep the R12 and keep things period correct instead of spending money unnecessarily.

[@GabeTran]

Was there a write up or anything that you followed to do this conversion?? Looking to do the same on my M3

[@djloqman1]

plz help i cant find a compressor for my 1989 e30 325i changing all ac system evaprator condenser drier presure switch

[@ka0gmk]

What is the compressor used and block mounting bracket? Where can this be found these days and any part numbers?

[@Tommylures]

for the low pressure switch i have 3 wire what do i do to bypass bc there is 2 red and black and just 1 black

[@robhall7192]

Do you have a part number for the 2 wire pressure sensor or is it just from an e36?

[@buddhalawton]

Are you using the original style compressor with the new R134a?

[@marcodm]

Lots to change. Is it legal to run r12 in my 88??

[@serge933]

Yes it is, but it is illegal to vent that to atmosphere. Some shops still are able to refill with R12 but they are becoming scarce.

[@343stone]

Do you have a ig

[@rohitsharma-xu9wv]

Hi! Great video!!! What is the part number for the single pressure sensor?

[@rohitsharma-xu9wv]

I found a pressure sensor but do you have a part number for the pigtail to connect it to the car? Thank you

[@samgoaliecam]

@@rohitsharma-xu9wv I know this is from a year ago, but for anyone that needs this in the future: 6113 1 378 400 - that's the part # for the wiring connector.

[@zink7273]

@@samgoaliecam life saver, thanks

[@goheat77]

you forgot the expansion valve.. total failure...

[@Akrunner1987]

He said he replaced the expansion valve look at the video again...