Hello all, I have searched this like crazy and have not found what I'm looking for. I have a 2000 first gen tundra. Sometimes when I come out to drive it the battery will be just flat dead. Will not even power door lights. I would jump it off and it runs and drives just fine. I was trying to figure out my issue one day and a little after turning off the truck I had my head under hood and the fuel pump kicked on. It will stay on and run until the battery is flat dead. I have changed relays and checked all I know to check. Any advice what to look for? It don't do it all the time but sometimes it will. Thanks.
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