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Idle COMPENSATOR

  1. Disconnect vacuum hose at idle compensator. Connect vacuum pump to hose and apply vacuum. If leakage is excessive, replace idle compensator assembly.
    NOTE: On dual port compensators, one of the 2 compensator ports must be plugged while checking the other.
  2. Warm up engine to normal operating temperature. Direct warm air from a heat gun at the idle compensator. Measure operating temperature of idle compensator with thermometer. Idle compensator is good if a hissing sound is heard when it reaches specified temperature. If not, replace idle compensator.
IDLE COMPENSATOR OPENING TEMPERATURES

Application No. 1 No. 2
Pulsar, Sentra 140-158°F (60-70°C) 158-176°F (70-80°C)
Pickup 127°F (53°C) N/A
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