No or Hard Starting

SYMPTOM DESCRIPTION:
Engine cranks OK, but does not start immediately. Will eventually start and run, but may die shortly after.

SYSTEM OR COMPONENT TO CHECK

COMPUTER INPUTS/OUTPUTS
CHECK:
CRANKSHAFT POSITION/SPEED SENSOR: Damaged or defective crankshaft position/speed sensor.
FUEL INJECTION CONTROL UNIT: Defective fuel injection control unit.
COOLANT TEMPERATURE SENSOR: Wrong value or improper wiring.
IDLE AIR VALVE: Stuck or partially closed idle air valve.

FUEL
CHECK:
[1][2]SYSTEM RELAY:

NOTE: [1][2]System relay operation. Pump should continue to run after the engine has started. See ELECTRICAL AND ELECTRONIC DIAGRAMS

WATER CONTAMINATED FUEL:
FAULTY FUEL PUMP CHECK VALVE:This could allow the fuel in the lines to drain back to the tank after the engine is stopped.
COLD START VALVE: Clogged, stuck, or defective circuitry
FUEL PRESSURE REGULATOR: Defective(see FUEL SYSTEM).
AIR LEAKAGE IN INTAKE SYSTEM: Check intake system for vacuum leaks.
TURBO SWITCH: Check turbo-boost over pressure switch.

IGNITION
CHECK:
IGNITION CONTROL UNIT: Damaged or defective
POWER STAGE: Damaged or defective.
Proper ignition output voltage.
Spark plugs, wet plugs, cracks, wear, improper gap, burned electrodes or heavy deposits.
Bare and shorted wires.
Moisture in distributor cap.

FUSES
CHECK:
FUSE BOX: Check fuse #1, #11 and connectors for good condition.