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1951 Ford F-1 Custom — battery keeps dying after two or three days parked

V8Fan91Community StarterJun 21, 20261951 Ford F-1 CustomTexas
1951 Ford F-1 Custom, about 48,000 miles. Battery tested okay at a parts store, but if the car sits for a weekend it sometimes won't crank. Alternator voltage looks normal while running. How would you narrow down a parasitic draw without pulling every fuse blindly? I'm in Texas. I'd rather test this logically than start replacing parts.
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CruiseBuilderCommunity StarterCommunity StarterJun 22, 2026permalink
Ask what changed right before it started. Two 1951 Ford F-1s can feel identical and have different causes, so measure before you copy someone else's repair. That's the branch I'd chase this week. Have you gotten a second quote in writing? Make the next action something you can finish this week. I'd rather look cautious in this thread than stuck later.
NorthBuilder54Community StarterCommunity StarterJun 22, 2026permalink
Log the conditions before you spend. Loaded-suspension checks on the 1951 Ford F-1 catch play that a wheels-hanging inspection misses. Don't erase codes until someone who can help has seen them. On “1 custom — battery keeps dying after,” that was the fork that mattered for me. When does it actually happen? I'll update if anything new shows up.
V8Fan91Community StarterCommunity StarterJun 23, 2026permalink
OP update: scanned the 1951 Ford F-1 again and still only have the one pending code, no new lights. Next check is the cheap one I can do in a driveway.
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