A/C Would there be a benifit to putting mk3 into mk2? - Troubleshooting - VWDiesel.net The IDI, TDI, and mTDI source.

• A/C Would there be a benifit to putting mk3 into mk2? by subsonic on 04 Aug, 2007 09:15
• Is any of this stuff interchangable?  My wife hates to drive my car in the summer because the A/C has not worked since I bought it.  My car is a 85 so the parts are getting up there in age.  Could you retrofit in MK3 stuff?  That sys was 134 right?
  If I end up staying with the old sys, has anyone put together a rebuild parts list with the correct O-rings, fittings etc.?
  Never had heat worth sheit either. (thats the other reason she hates to drive it) From reading here, I belive I have tracked down the problem to a faulty blend door.
  
  Wow how nice that would be, heat and A/C
  Jim
• #1 by jtanguay on 04 Aug, 2007 13:09
• i bought an o-ring kit off ebay for around $20 then shipping (green viton o-rings)
  
  i still have a lot of the o-rings since some of them are gigantic and i doubt i'll ever find a use.  i would have payed more than $20 at the dealer buying the specific o-rings for the car.
  
  to fix my a/c i had to change the rad fan, new resistor for the low speed a/c, a new condensor, and receiver drier.
  
  since my system was exposed to the elements for almost a year, i had to run duracool duradry to get rid of the moisture, and then some duracool a/c oil chill (because i replaced the condensor & receiver drier) and then charged her up.  cooling is okay, but nothing too special.  i still have to open it back up to make some cowling so that the rad fan sucks air from both the rad and the condensor.
  
  the mk2 sanden compressor is pretty robust.. i'm surprised it didn't blow.  i always hear about gm type compressors going... what a surprise  :roll:
  
  if you use a mk3 compressor i dont think it will work (i never heard of a mk3 a/c compressor that had a v-belt)
  
  http://cgi.ebay.com/ebaymotors/HNBR-270-Piece-A-C-O-Ring-Set-Nice-Assortment-14-99_W0QQcmdZViewItemQQcategoryZ63703QQihZ019QQitemZ290144614157QQrdZ1QQsspagenameZWDVW
  
  that kit might work.. but my kit was import specific (so it fit the metric sizes)
  
  you'll also need to convert your charge fittings to the quick connect r134a style with a kit like this (i just bought the low side fitting for $10) you can check out www.duracool.com for just a couple of fittings as the kit below is pretty pricey.
  
  http://cgi.ebay.com/ebaymotors/R-134a-Conversion-Fitting-Kit-TCC-9330_W0QQcmdZViewItemQQcategoryZ33544QQihZ005QQitemZ150128920702QQrdZ1QQsspagenameZWD1V