different voltage

[harilaha]

At present the voltage on the LCD Display jumps between 10.8V and 13.9V while driving.

Sometimes for a few minutes 14V, suddenly for a longer time 11.2V

The 100amp under the alternator its ok, i believe.

The alternator or battery are knackered?

please help...

[bertie]

Wouldn't be suprised if it's the battery, it in the most stupid location right next to one of the catalysts so get's literaly cooked to death.

You problem sounds more like a duff connection somewhere though to me.

[harilaha]

The car is LHD.The battery isn`t on catalysts side.Sits on airbox side.

But where can be the duff connection??

[basil brush]

Mine has just started doing this over the last couple of days. It only seems to happen once the car is warmed up and when the voltage drops enough I´m getting EFI fault messages. I think it is something shorting out and draining all the current from the alternator. God knows what though.

[donaldhunter]

It could be a bad earth to the battery.

[basil brush]

I think it's something that is affected by suspension or engine movement as it seems to do it worst when lifting off from high revs and slowing down.

[harilaha]

It was noticeable to me, that the battery light sometimes came on at low revs.If you put a little more revs, the light flickered off again!?