Thread: Loss of 12v Power on Ignition

Disconnect auxiliary and try again.
In all likelihood it’s been propping up the main for a while and the main is actually dead.

Originally Posted by Tombie

Disconnect auxiliary and try again.
In all likelihood it’s been propping up the main for a while and the main is actually dead.

Tombie, I have removed the aux, with crank showing 12.6v. Left it for another 15 mins and have power again.
Turn key to ignition and there is a sharp 'click' and all goes dead.

Originally Posted by Saitch

Tombie, I have removed the aux, with crank showing 12.6v. Left it for another 15 mins and have power again.
Turn key to ignition and there is a sharp 'click' and all goes dead.

Sounds like starter trouble.
Solenoid is throwing and then nothing.

Originally Posted by Saitch

Tombie, I have removed the aux, with crank showing 12.6v. Left it for another 15 mins and have power again.
Turn key to ignition and there is a sharp 'click' and all goes dead.

The 12.6V could be just a surface voltage,get someone to turn key while you look at voltage at battery on meter.
It may drop down to 8.0V or lower, or whatever,so that battery is shagged or needs a good charge then see how it goes.

Or if no one to help,just put it on a charger overnight.See how it goes in the morning.

Originally Posted by scarry

The 12.6V could be just a surface voltage,get someone to turn key while you look at voltage at battery on meter.
It may drop down to 8.0V or lower, or whatever,so that battery is shagged or needs a good charge then see how it goes.

Or if no one to help,just put it on a charger overnight.See how it goes in the morning.

Thanks, Paul.
I started the 'Recondition ' phase on the smart charger, a while ago, so I'll se how that goes.
I did use the D3 to jump start another vehicle, last Saturday. Perhaps too much for it's battery. Did have the revs up, though.

Also check the mega fuse to the starter motor hasn’t blown.

Originally Posted by scarry

The 12.6V could be just a surface voltage,get someone to turn key while you look at voltage at battery on meter.
It may drop down to 8.0V or lower, or whatever,so that battery is shagged or needs a good charge then see how it goes.

Or if no one to help,just put it on a charger overnight.See how it goes in the morning.

If you dont have an assistant turn your headlights and your heater fan to apply a load to the battery. If battery is good there should be a minimum decrease in the voltage measured at the battery.

Just to be clear, did you try to crank it, or just turn to ignition? If you didn't crank it starter has nothing to do with it