Hard Starting
- Check for open coolant temperature sensor circuit. Indication of this condition is an engine that it will start normally when engine is hot, but is hard to start when engine is cold or only partially warm.
- To check sensor, connect an ohmmeter across sensor connector. If ohmmeter reading is more than 1600 ohms, replace sensor.
- Check for a malfunctioning throttle position switch, disconnect switch and engine should start normally. Check for a malfunction in fuel pump(s) or pressure regulator, check pressure of fuel supply system.