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sprinkles08, ASE Certified Technician
Category: UK Car
Satisfied Customers: 23107
Experience:  ASE Master and Advanced level certified. Factory trained with 17 years dealership experience
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Transit T350, newish battery, battery went flat over a

Customer Question

Hi, transit T350, newish battery, battery went flat over a couple of days, jump started ok. slightly loose terminal, tightened , jump started ok again no charge light showing, them after 5 miles engine stuttered and cut out , ignition lights still on, no battery power at all, jump started ok. Battery, battery terminals, earthing, alternator?cheers,Graham
Submitted: 2 years ago.
Category: UK Car
Expert:  sprinkles08 replied 2 years ago.

Hello and welcome to JustAnswer!

You may have a combination of issues going on at the same time.

If the battery died while sitting then either the battery is bad or something is drawing current while the vehicle is park. If a light is staying on or a module is staying awake for instance it will draw current and kill the battery. It isn't uncommon for an alternator to fail and draw current while the engine is off also. After the battery is fully charged again then an ignition off draw test can be done to see if there is a draw.

Since it died while driving but restarted with a jump it's likely that the alternator isn't charging. I've seen cases where the battery light doesn't come on when it should and the battery dies while driving because the alternator has failed. Once the battery is charged again and engine is running then the alternator's output should be checked. It's possible that the alternator isn't charging and is also causing a draw, killing the battery while the engine is off.