Mike's Workshop Manuals
: Service manuals for every vehicle
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Jeep
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1987
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Cherokee Chief, 4D Utility, 4.0 M, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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EGR Function Testing
EGR Function Testing
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Testing
EGR Valve
Valve Opening Test
Valve Closing Test
Coolant Temperature Override (CTO) Switch
Dump Valve
Thermal Vacuum Switch (TVS)