While vehicle is running no problem
alternator tested and new battery! But
when the vehicle is off it kills the battery
does anybody have an answer why??
There is a parasitic draw on the battery. Here is a video on how to perform the testing for it... https://www.youtube.com/watch?v=QRso1A0VScw
Looking for a Used F-150 in your area?
CarGurus has 181,221 nationwide F-150 listings starting at $1,000.
Search Ford F-150 Questions
Ford F-150 Experts