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Re: Rehooking up unknown factory air
Quote:
Originally Posted by Bigdav160
The R4 compressor is completely fine for use with R134a. GM used it that way in '94 and '95 models.
You'll want to change the drier to a new one. The old desiccant in it is not compatible with R134a.
There's a chance the TXV (expansion valve) is stuck from sitting with no lubrication. The POA valve will need to a pressure adjustment to work effectively with R134a.
Likely, you'll want to change the hoses to the newer style (takes a little tweaking to fit with the R4 compressor) and while your at it, update the condenser to a more modern design.
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good info. thanks.
__________________
"Life is too short to drive a boring vehicle".
Later,
Wayne
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