A/C R134 retrofit

[Karl]

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I have had great success with these conversions on many different vehicles.=
 The first thing that I recommend is that you purchase a kit that contains =
Ester oil. Your local parts store should have these kits in stock for about=
  20 bucks. You want this kit to contain a bottle of Ester oil and the conv=
ersion adapters for the high and low pressure sides of the system. The Este=
r oil is suppose to condition the seals and the compressor to accept the ne=
wer gas (R-134).
I would add a little dye incase you need to locate a leak at a later time. =
I have found in my experience that sometimes the orifice metering valve wil=
l sometimes stick when you discharge.  I always recommend changing it. In y=
our vehicle it is located in a A/C line  on the passenger side in the cowl =
panel below the windshield. This is a GM type orifice tube and should also =
be able to be purchased at a larger parts supplier for about 15 bucks or so=
. Last but not least, a good vacuum is critical to the performance of the s=
ystem because in order for the system to perform properly the air must be e=
vacuated from the system before it is charge with the R-134 refrigerant.
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