R-134a Refrigerant A/C System: Overview

September 29, 1992

BULLETIN NO
92-027

YEAR
1993

MODEL
NSX
LEGEND

VIN APPLICATION
ALL

R-134a Refrigerant A/C System

Starting with the 1993 NSX and Legends, Acura will begin equipping cars with R-134a refrigerant A/C systems. The refrigerant R-12 used in car air conditioners contains CFCs. Consequently, R-12 refrigerant will be phased out and replaced with the new refrigerant, R-134a, which does not contain CFCs.

Air conditioners using R-134a look similar to the existing R-12 air conditioners in terms of system structure. The most significant difference is the refrigerant itself. This Service Bulletin explains the differences between R-12 and R-134a air conditioner systems, how to identify the system components, and how to service the R-134a air conditioner system.

NOTE:
Always refer to the service manual for specific model information and procedures.