1999 ford f150 ...truck wouldn't start so bought new battery. Sat over night, and nothing in the morning. on charger, it shows full charge but will just click and not start. We can jump it and it starts but will not start after sitting for 8 hours

Asked by GuruC2J7Z Mar 06, 2019 at 09:44 AM about the 1999 Ford F-150 Lariat Extended Cab SB

Question type: Maintenance & Repair

bought new battery because truck was dead. Truck worked until it sits for 8
hours and then dead again. we can jump it and it works, but again after a while
it just clicks when you try to start it.

2 Answers

1,635

This happened to my 1996 Silverado when I was still in school. It's a problem with your ignition or your stater relay, your battery is fine its other components that are bad. In my case it was both but I'm not sure if its case sensitive or if I didn't have to replace both but when I replaced one it didnt start so I took the part off and out the other one on and it still didn't start but when I put both on it started. Once again I'm not sure if it was just my case but I would watch out for stuff like that.

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73,310

Check the net on how to trace a parasitic draw. It is not difficult.

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