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Home >> Lincoln >> 1987 >> Mark VII Base >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> General Servicing >> A/C System General Servicing >> Basic Diagnostic Procedures >> Preparation For Testing

Preparation For Testing

  1. Attach Low and High side gauges.
  2. Start engine and allow it to warm up.
  3. Set system to COOL and blower to HIGH.
  4. Open car doors and hood.
  5. Run at fast idle for 2-3 minutes.


  1. Attach Low and High side gauges.
  2. Start engine and allow it to warm up.
  3. Set system to COOL and blower to HIGH.
  4. Open car doors and hood.
  5. Run at fast idle for 2-3 minutes.
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