Your Vehicle: 2001 Ford Escort ZX2 L4-2.0L DOHC VIN 3
 
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  Refrigerant System Tests  
 

R134a Manifold Gauge Set
  

SPECIAL TOOL(S)

  1. Connect the R-134a Manifold Gauge Set.
  2. Adjust the climate controls for maximum cooling.
    • Start the engine.
    • Select MAX A/C operation.
    • Set the blower motor speed to maximum.
  1. Stabilize the in-vehicle temperature at 21-27°C (70-80°F) .

  

  1. Maintain the engine speed at 1,500 rpm .

NOTE: When the ambient temperatures exceed 38°C (100°F) , do not run the engine above normal idle speed.

  

  1. Determine the compressor discharge (high) pressure.
1 Record the ambient temperature.
2 Record the discharge (high) pressure.
3 The system performance is acceptable when the pressure reading falls between the upper and lower limits shown.

NOTE: In ambient temperatures between 38-43°C (100-110°F) , the system performance pressures will be the same as those for ambient temperatures shown on the chart in the 32-38°C (90-100°F) range.

  

  1. Determine the compressor suction (low) pressure.
1 Record the ambient temperature.
2 Record the suction (low) pressure.
3 The system performance is acceptable when the pressure reading falls between the upper and lower limits shown.

NOTE: In ambient temperatures between 38-43°C (100-110°F) , the system performance pressures will be the same as those for ambient temperatures shown on the chart in the 32-38°C (90-100°F) range.

  

  1. Determine the A/C clutch ON time.
1 Record the ambient temperature.
2 Record the A/C clutch ON time in seconds.
3 The system performance is acceptable when the recorded time falls between the upper and lower limits shown.

NOTE: When the ambient temperature is above 26°C (80°F) , the A/C clutch may not cycle.

  

  1. Determine the A/C clutch OFF time.
1 Record the ambient temperature.
2 Record the A/C clutch OFF time in seconds.
3 The system performance is acceptable when the recorded time falls between the upper and lower limits shown.

NOTE: When the ambient temperature is above 26°C (80°F) , the A/C clutch may not cycle.

  

  1. Determine the total A/C clutch cycle time.
1 Record the ambient temperature.
2 Record the time the A/C clutch is engaged plus the time it is disengaged (time ON plus time OFF).
3 The system performance is acceptable when the recorded time falls between the upper and lower limits shown.

NOTE: When the ambient temperature is above 26°C (80°F) , the A/C clutch may not cycle.

  

  1. Determine the A/C clutch cycle rate per minute.
1 Record the ambient temperature.
2 Record the number of A/C clutch cycles occurring in one minute .
3 The system performance is acceptable when the recorded number of cycles falls between the upper and lower limits shown.

NOTE: When the ambient temperature is above 26°C (80°F) , the A/C clutch may not cycle.

  

  1. Determine the center A/C register discharge temperature.
1 Record the ambient temperature.
2 Record the center A/C register discharge temperature.
3 The system performance is acceptable when the center A/C register discharge temperature falls between the upper and lower limits shown.

NOTE: In ambient temperatures between 38-43°C (100-110°F) , the A/C register discharge temperatures will be the same as those for ambient temperatures shown on the chart in the 32-38°C (90-100°F) range.