Question about Hyundai Motor 2002 Elantra

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Car starting problem

When I turn the key, I can hear a humming - perhaps the fuel regulator - going, but the car does not start. it doesn't even attempt to turn over. After 3-4 attempts, it finally starts right up. I have had the starter and batteries checked out, and both are fine.

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Hi there,

I think your right that the humming is likely to be the fuel pump and so thats OK and should happen without the key being turned to the Start position. If the humming only happens when you turn the key to the start position rather than just when you turn the key to the point where the electrics come alive, then that would be a new symptom that would be interesting to hear.

I understand how frustrating this can be. Just a couple of concerns here. I think if your starter truely starts your car then there is not likely anything wrong with the starter motor itself. However that would not rule out a solenoid that is being problematic, and only activating occasionally.

I have had bad batteries classified as good by shops that check batteries, so don't assume that the battery is not the problem.

If we assume the battery and the starter are good including the solenoid then I would say you have to check all the connections on the wiring - i.e. take the terminal connections off the battery and clean then thouroughly - while the batter is disconnected take it out and trace the cable links to the Chassis earth connection and the positive connection down to the starter - take the cables off and clean the connections to the car, body and to the starter motor. Also clean the connection that goes to the Solenoid post on the Starter motor taht comes from the ignition switch ( the smaller connection on the starter) . Also check the earth strap between the engine block and the car body that allows the starter circuit to be completed. It could be a poor connection in any of these places is setting up a high resistance that is creating a problem for the starter circuit if the starter motor is physically not turning over.

Stick the battery back in - make sure all the connections are cleaned lightly greased and tightened and try to start it.

If it wont go - try getting a friend to help you put jumper leads across your battery from their car and trying to start your car. Make sure their car is running when you try to start your car. If it works every time 1st time with the jumper leads then I would have to suggest the battery on your car is bad - despite what the test guys say.

If it still plays up with the jumper leads after cleaning all the cables i would point to the Soleniod on the starter motor and suggest that the solenoid is defective.

If you want to check the starter directly - its a bit dangerous so you have to be really careful and have a very good friend who is willing to let you try this with his car battery and that would be while you get under the raised up car which is firmly choked and in neutral, with the starter motor in place connect the negative to the earth strap connector on the engine block, and then while the friend stands ready with the disconnected Positive jump lead and holding the negative jump lead in place on his battery, you climb under the your raised up car with the positive jump lead and a screw drive and attach the positive jump lead directly to the positive terminal of your starter motor while bridging between the positive terminal and the solenoid terminal with something like a screw driver or another think wire. (you have to be really careful doing this cause there are so many things to accidentally touch with the positive cable and cause arching ) but once your all in place your friend can attach the other end fo the positive jump lead to his battery and that way you have taken out all the circuitry and are effectively testing your starter while in place on your car and while under load. As long as your jump leads are good and you are in good contact with the starter connections and the soleniod contacts, if the starter doesn't turn the engine over you have something up with the starter. As you have taken every thing else out of the loop - i.e. the wiring and your battery.

If the starter does turn the engine over this way it says the starter is good and there are problems with the wiring or your battery.

Sorry for the long reply but thats all I can think of to try and work out where the problem may be.
Good luck.

Posted on Sep 12, 2008

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