Like the title says my 02 Venture drains the battery & no one can figure out why. I tired of putting money into this thing. Alternator checks out good & there are no codes. I read somewhere that someone had one doing the same thing and even the dealership couldnt figure it out.

 

Need more detail, as how old is the battery, does it discharge over night, or 2-3 times a week?

 

Put a brand new battery in it & took it for a 15 minute test drive. All seemed fine but it did a quick miss once and then when I pull in to park it died. Sat for a week, started right up and drove it home. Sat for a day and the battery was dead.

 

unplug your Alternator plug and see if it go dead if so you need a new one it dont mater if the Alternator check out good my 2001 lincoln continental had a bad Alternator and no one could see it

 

Have you had luck with figuring it out yet? On mine (2001) the ignition switch is worn, sometimes if I turn the vehicle off and remove the key, the switch can be left in the 'acc' position instead of 'off'. This drains the battery in a few hours. I've learned to always check that it is actually off.

 

Yes, I've had some luck, I sold the van.

 

I wonder if the new owner will end up on this forum.

 

 

I have a 02 chevy venture van when you shut the key off the ac n heater fan keeps running the front and rear and the radio doesn't shut off either any ideals Im stumped

 

if it was all the accessories that are normally powered in run; I would check the ignition switch.