Chart A3 - Engine Cranks But Will Not Run: Notes

Engine cranks but won't run, or engine starts and dies immediately. Battery condition and engine cranking speed are okay. There is enough fuel in tank.

This engine is equipped with distributorless ignition system called "Computer Controlled Coil Ignition" (C3I). The EST and Bypass circuits operate in same manner as in an HEI system.

1. A "SERVICE ENGINE SOON" light "ON" is a basic check for ignition and battery supply to Electronic Control Module (ECM).
2. Checks to see is ECM is controlling fuel injectors. A blinking test light, at this point, indicates ECM is controlling injectors and ignition reference signal to ECM is good.
3. Checks to see if problem is fuel or ignition related.
4. Checks to see if fuel pump and relay are operating correctly. Fuel pump should run for only 2 seconds after ignition "ON".
5. An injector driver circuit shorted to ground would result in test light on steady and possibly a flooded engine. A shorted injector (less than 10 ohms) could have caused an ECM failure.
6. Checks for ignition feed to injectors on each bank.
7. Checks to see if ECM is receiving reference signal from ignition system.