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Jeep
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1981
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Cherokee S, 4.2L Eng VIN C, AWD
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Repair and Diagnosis
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Engine Performance
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Engine Control Systems
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Exhaust Gas RECIRCULATION
Exhaust Gas RECIRCULATION
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Description
Operation
Notes
EGR Valve
Notes
EGR Valve w/o Integral Back-Pressure Sensor
CTO Switch
Thermal Vacuum Switch (TVS)
EGR Dump Valve
Forward Delay Valve
Testing
EGR Valve
Valve Opening Test
Valve Closing Test
CTO Switch
Dump Valve
Thermal Vacuum Switch