I have a 2000 Elantra that will turn over, but will not start. When the key is turned to the off position or even removed I still have a humming noise coming from the area of the the Idle Speed Control Actuator and Heated Oxygen Sensor (rear). The only way to stop it is to disconnect the battery. Before I discovered the noise it had drained a battery 4 years old and also a brand new replacement battery. After replacing the drained batteries it would start just fine as long as I disconnected the battery after use, but suddenly it will again turn over but not start. Any suggestions?
Thanks,
G'
Thanks,
G'