High Energy Ignition (HEI) System - PFI

Make

Chevrolet

Model

Camaro RS

Engine

V8-305 5.0L VIN E TBI

Year

1990

Section

Electronic Spark Timing <--> [Electronic Spark Control Module] › Description and Operation › High Energy Ignition (HEI) System - PFI

Powertrain ManagementHigh Energy Ignition (HEI) System - PFI · page 1 of 2

Electronic Spark Timing: Description and Operation
High Energy Ignition (HEI) System - PFI

The Electronic Spark Control (ESC) system module sends a voltage signal (8 to 10 volts) to the ECM when no spark knocking is detected by the ESC
knock sensor, and the ECM provides normal spark advance. When the knock sensor detects spark knock, the module turns "OFF" the circuit to the ECM
(0 volts). The ECM then retards EST to reduce spark knock. 

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05 Diagnostics

The same page in: Camaro RS V8-305 5.0L VIN E TBI (1990), Camaro RS V8-305 5.0L VIN E TBI (1990), Camaro RS V8-305 5.0L VIN E TBI (1990), Camaro RS V8-305 5.0L VIN E TBI (1990), Camaro RS V8-305 5.0L VIN E TBI (1990), Camaro RS V8-305 5.0L VIN E TBI (1990), Camaro RS V8-305 5.0L VIN E TBI (1990), Camaro V8-305 5.0L VIN E TBI (1989), Camaro V8-305 5.0L VIN E TBI (1989), Camaro V8-305 5.0L VIN E TBI (1989), Camaro V8-305 5.0L VIN E TBI (1989), Camaro V8-305 5.0L VIN E TBI (1989).