Reply to "Air conditioning piping runs"

joules"Racing is Life, anything before or after is just waiting" - Steve McQueen

@Percy posted:
Finally, one last question, with 134a swap do you need to replace the TX valve?

Some might say not needed, but I say change it for optimal performance between high and low pressure side and having gone this far what's an extra ~$30. A new dryer is a must too. Be sure to flush out the evaporator core and condenser thoroughly if reusing. The PAG oil used with the R134a is not compatible with the old mineral oil in the R12 system. Ester oil is a good way to go to avoid problems from any residual mineral oil.

12/27/205:36 PM

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