Operation CHARM
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Oldsmobile
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1987
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Firenza L4-121 2.0L VIN 1 TBI
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Symptom Related Diagnostic Procedures
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- Diagnosis By Symptom - High Energy Ignition (HEI) System
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Engine Cranks, But Will Not Start
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With Electronic Spark Timing (EST)
With Electronic Spark Timing (EST)
Fig. 3h HEI-EST ignition system diagnostic chart (Part 8 of 10) 1985-88 models w/integral coil:
