1. Faulty temperature sensor: The temperature sensor is responsible for sending a signal to the engine computer (ECU) about the temperature of the engine. If the sensor is faulty, it may be sending an incorrect signal to the ECU, which could cause the engine to start when it is cold but not when it is warm.
2. Faulty ignition switch: The ignition switch is responsible for sending power to the starter solenoid when the key is turned. If the switch is faulty, it may not be sending power to the solenoid, which could prevent the engine from starting.
3. Faulty starter solenoid: The starter solenoid is responsible for engaging the starter motor with the flywheel. If the solenoid is faulty, it may not be engaging the starter motor properly, which could prevent the engine from starting.
4. Faulty wiring: The wiring between the temperature sensor, ignition switch, and starter solenoid could be faulty, which could prevent the engine from starting.
To diagnose the problem, you will need to test the temperature sensor, ignition switch, and starter solenoid. You can do this with a multimeter. Once you have identified the faulty component, you can replace it and the engine should start properly.
