Chart A-3 Engine Cranks But Will Not Run
Fig. 025 - Wiring Diagram for Chart A-3 Engine Cranks But Will Not Run. VIN 9:
CHART A-3
ENGINE CRANKS BUT WON'T RUN
3.8L TURBO "E" & "G" SERIES
FUEL INJECTION (PORT)
Engine cranks but won't run, (or Engine may start, but immediately stops running). Battery condition and engine cranking speed are OK. There is adequate fuel in the tank.
This engine is equipped with an all new distributorless ignition system called Computer Controlled Coil Ignition.
The EST and Bypass circuits operate in the same manner as in an HEI system.
Fig. 024 - Chart A-3 Engine Cranks But Will Not Run:
1. A "SERVICE ENGINE SOON" light "ON" is a basic check for ignition and battery supply to the Electronic Control Module (ECM).
2. Checks to see if the ECM is controlling the fuel injectors. A blinking test light at this point indicates the ECM is controlling the injectors and that ignition reference signal to the 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. Checks to see if ECM is receiving reference signal from ignition system.
6. Connect a timing light and note spark timing while cranking. It should be 10 to 15° B.T.D.C. If timing mark is not visible while cranking, remove cam sensor cover and check for interrupter curp being loose. If cup is not loose, set sensor timing as per the procedure in computer controlled coil ignition "On Car Service" Section. If timing mark is not visible while cranking, after making this adjustment, internal engine camshaft timing problem is indicated.