fuse power problem
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Mountain Pass
Joined: Aug 2010
Posts: 122
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From: santa clarita
fuse power problem
hey guys im having an issue with my 2000 7.3 holding a charge. i keep getting a power draw from fuse panel under dash - fuse 15. the guy said its the computer not turning off after car turned off. he said hes never seen it. any body seen this issue before? thanks
Thread Starter
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Mountain Pass
Joined: Aug 2010
Posts: 122
Likes: 0
From: santa clarita
it could take anywhere from a day to a week to bee completely dead again. i have had the alternator replaced. disconnected the grounds and used a test light to the ground terminal. and was still getting power. so went under dash and found what fuse was still lighting up. which was the fuse 15
Postmaster
Joined: Jan 2009
Posts: 4,006
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From: AL, Reform
the computer may have its on ground, i would think it would to keep it safe. the drains are hard to find maybe someone can help that has been down this road. i would think i would be hard for the computer to drain them in a day but strange things happen.
Elder User
Joined: Dec 2009
Posts: 864
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From: Fort Campbell, KY
Also remember, once you remove that grounds from the batteries, and then reconnect (or use your test light), the PCM will "wake up" and show a draw. Best way to isolate a parasitic draw is to have an amp meter connected, then close the doors and wait for the PCM to go to sleep. (like when you leave your door open, I forget how long think it's like 120 seconds, the lights go out), then you'll see what's being drawn, suppose to be less than 50 milliamps.
