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1989
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Caprice Base, 4.3 Z, 4L60/MD8
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Ignition System - HEI-Est
Ignition System - HEI-Est
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Description
Operation
Ignition System
Est System
Notes
Reference (RPM) Wire
By-Pass Wire
EST Wire
Ground Wire
Sensors
Electronic Spark Control (ESC) System
Adjustments
Trouble Shooting
Diagnosis
Testing
Ignition Coil Resistance Check
Externally Mounted Ignition Coil
Integrally Mounted Ignition Coil
Distributor Pick-Up Coil Short & Resistance Checks
Ignition System Check
Notes
Preliminary Testing Procedures
Intermittent Operation Check
Est System Check
Carbureted Engines
Fuel Injected Engines
ESC Performance Check