Question about A/C

[bolokid]

I read the thread discussing getting more cold out of the a/c. Reference was made to factory a/c and dealer installed a/c. How do I tell which I have? Thanks.

[bravekozak]

Main difference: Factory used Nippondenso compressors and dealers used Sanden compressors.

[navdoc101]

My dealer installed A/C has a sticker on the Radiator suppoet that states it is dealer installed.

[bravekozak]

Do you have the sticker that states the R-12 capacity?

[navdoc101]

Nope, isn't in the service manuel?

[bolokid]

Do you have the sticker that states the R-12 capacity?

I was told 22 oz of R-12.

[sc72]

IIRC the book says 1 lb 9oz or 25oz. I have been told that if you change to 134a you only need 80% of 134a to fill the system. good luck.

[Chobobulous]

I would say easiest way to tell was where the relays were.

[Movin]

25 oz .7 kg , 1.56 lbs and a bit less for freeze12 or other hybrids. 134 is the least efficient.
The hybrids got better fuel economy because of better efficiency than R 12. So our govment chose 134 because it was the worst they could find for efficiency- fuel economy!! Because of this a conversion works better slightly under charged with 134..some bubbles in a sight glass.

The best systems are original 134 systems with their bigger condensers and slightly different other components converted to hybrid!!