Electrical question

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Oct 29, 2005 | 10:13 AM

backhoeken

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Electrical question

I am trying to trouble shoot a mysterious current draw. The truck is a 89 F250 7.3. It appears not to be charging properly as the voltage is around 13.6 -13.9 consistently, When the truck sits for a week the batterys are both dead. How should I tell if there is a current draw and where to test.

Thanks
Ken

Oct 29, 2005 | 10:25 AM

clong

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From: Bryant Arkansas

place an amp meter into the line of any item you wish to check. However if it was me I would pull the alternater and have it checked for a bad diode pack.

Oct 29, 2005 | 10:33 AM

whiteyfordzx5

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to get a real basic charge test, you don't even have to remove the alternator. they can test the whole system in less than 5 minutes by just hooking up the diagnostic machien to one of the batteries.

now, if that shows bad, you'd need to pull the alternator to isolate the cause.

Mike