A&Q about 350Z
Q:
My car was working fine earlier today... no problems at all. Then I'm ready to leave and I turn the ignition and nothing happens.
When I turn the key once the check engine light turns on for 2 seconds then turns off as normal, there is also a hum. When I turn the key to start it, the same hum happens but nothing else. All of the lights work and the radio works. Jumping the car didn't do anything either. My dad checked the fuses and said none of them in the car or under the hood were blown.
Does anyone know what might be wrong? I really want to get back for the game :/
A:
Ask the civic thread if you haven't already. Aside from that, is the humming noise your fuel pump? If so, you may have a fuel flow problem. This will be if the car turns over also, does it?
If it doesn't turn over:
Humming noise could also be your antenna (if it retracts) but I doubt the humming noise is the cause of your problem. Try charging your battery.
A:
If there's no click or anything, and the car wont turn over I'd say it's something to do w/ the starter.
A:
you're right, could be a spot on the starter if it ran before. It may or may not start again like that.
A:
It can be the starter, it can be the battery, it can be the wiring, it can be the immobilizer and a few other things.
Normally, when you turn on the ignition in your car the ECU is "activated", it makes a fault check and if there are no faults and/or stored fault codes then "check engine" light turns off. After that the ECU will wait for a signal from the crankshaft positioning sensor and from the electronic box that handles the immobilizer function. The latter is usually done through a CAN-bus. Normally the fuel pump also run for a short while when you turn the ignition on.
When you turn the key to start the car, one of the electronic boxes in the car will communicate with the key though an antenna (normally placed around the keyhole). The electronic box will check if the key has the correct code for starting the car, if it has, the electronic box will send a signal to the ECU and to the starter relay. When the starter relay get the signal it will send power though the starter motor which then spin up the motor. When the ECU recognize that the crankshaft is spinning though the crankshaft positioning sensor it will start the engine.
To begin with you can try to start the car with the spare key to make sure that there are no problems with the electronics in the key. If the car still won't start you have a fault somewhere in the "chain" described above, this means anything from the immobilizer antenna to the starter motor itself.
A:
The abscense of the typical "click" could mean that the starter doesn't get any power. It could also mean that the solenoid in the starter is broken. It's the solenoid that makes the "click". It's also this solenoid which engages the starter against the crankshaft, it also provides the starter motor with power when the solenoid has got power from the starter relay.
If there's no click but the radio is working it's probably not the battery. If there's a click the battery might be good enough to provide low power levels (such as required by the radio) but have difficulties with the high power required to run the starter.