Battery warning light
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Senior User
Joined: Mar 2005
Posts: 173
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From: Larkspur, CO
Battery warning light
My 2000 SuperDuty has an odd issue. The battery/charge warning light flickers around 1800 RPM and then stays on at 2000 RPM and above. The reverse is also true i.e. it flickers when I go below 2000 RPM and goes out at 1800 RPM.
Anyone have any clues? (I know this is not a diesel-specific issue, but nobody on the other forums seem interested in hepling with ANY issues if the truck is a diesel)
Anyone have any clues? (I know this is not a diesel-specific issue, but nobody on the other forums seem interested in hepling with ANY issues if the truck is a diesel)
Postmaster
Joined: Dec 2008
Posts: 3,340
Likes: 2
Mine did the same thing and replaced the alternator and fixed the problem. Tested ok at the parts store? First make sure all your battery connections are good and pulleys/ belt check out. Also, I would recommend getting a gator belt.
Postmaster
Joined: Sep 2008
Posts: 3,220
Likes: 0
From: VA
Yea, replaced my alternator and it fixed the problem as well. I even went as far as replacing the wiring plug on the alternator itself. My alt checked out good ON the truck but not when I took it off. Light hasnt flickered or come on since the new one though.
Hotshot
Joined: Jan 2008
Posts: 13,144
Likes: 11
From: Rochdale MA
Exactly!! even up to the point of the Gator belt.
Post Fiend
Joined: Sep 2006
Posts: 5,584
Likes: 0
From: Millbrook Alabama
They have you covered, Voltage regulator is going out. replace alt. , and check batts. If this issue has been happenign for a while (months or a few thousand miles) then you may need to replace the batts too.
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Wahoo121
1997 - 2006 Expedition & Navigator
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Jul 21, 2008 11:41 AM
