Difficult To Start
- Check for contaminated fuel.
- Check fuel pressure.
- Check for faulty Throttle Position Sensor (TPS).
- Check for faulty coolant temperature sensor.
- Check for loss of crank signal to ECM.
- Check EGR system.
- Check fuel pump relay and circuit.
- Check for faulty in-tank fuel pump check valve.
- Check ignition system.
- Check for faulty IAC operation (if equipped).
- Check for incorrect EEPROM application (Impulse and Stylus).
- Check for faulty main (or ECM) relay.