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post #5 of (permalink) Old 18th August 2007
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Hi Flinty

I had this same problem several years ago on my laguna 1.6 Same as you battery flat, fitted new battery same intermittent problem. Dealer had no idea. Then by chance all was revealed. After walking away from the car one day a humming noise could be heard coming from the rear of the vehicle. It was the fuel pump still running after the ignition was switched off. It was the pump relay that was sticking leaving the fuel pump running all night. New relay fitted job sorted. So check it out you could have the same problem. Hope this helps

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