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A/C System Performance

WARNING: This page is about a different car, the 1994 Mercury Tracer and 1994 Ford Escort. However, it is still accessible from the selected car via links, so may be relevant.
  1. Park vehicle out of direct sunlight. Install A/C manifold gauge set. Start engine and allow it to run at 1500 RPM. Set A/C controls to outside air, panel (vent) mode, full cold, and A/C button on.
  2. Set blower/fan on high speed and open windows. Operate system for 10 minutes to allow system to stabilize. Insert thermometer in center vent, and measure temperature. Temperature must be 40°F (4.4°C) at center vent, with high side and low side pressures within specification. See A/C SYSTEM SPECIFICATIONS table at end of article.
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