Engine Difficult To Start Under Cold Conditions
- Ensure fuel system performs properly (fuel pump, fuel filter, fuel injector and fuel pressure regulator).
- Check coolant temperature sensor and wiring.
- Check STA signal at Electronic Control Module (ECM).
- Check idle air control valve (if equipped) and wiring.
- Check cold start injector system (if equipped).
- Check air temperature sensor and wiring.
- Check Electronic Control Module (ECM) and wiring.