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Discussion Starter · #1 ·
Hi All

When I start the car (02 GU 4.2) in the morning multiple warning lights stay on
(i) Sub tank
(ii) Water in fuel
(iii) Battery icon

They go away within 30sec-2 minutes of driving.

I have searched and usually it is the alternator on the way out but in my case the batteries are at 12.7V after resting, drop to approx 12V when starting (have to check this), then are up to 14.2V after a minute or so of fast idling.

Any other causes?

Cheers.
 

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Discussion Starter · #4 ·
Only through a couple of puddles - will give it a go though. What did you thick was washed off that was causing it?

Does an alternator give of any other signs its on the way out that I or an auto elec could test? besides < 14V?

Does a battery on the way out throw these lights?
 

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They get mud and shete on the brushes and contacts. I just washed mine out and it has worked ever since. It's worth a shot. And there are other things you can do but you need to strip the alt to do them.
 
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