Lights Flicker
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Tuned
Joined: Jan 2012
Posts: 471
Likes: 1
From: Mount Vernon, KY
Lights Flicker
I have a 2000 F-150 5.4. The lights will dim very momentarily and brighten right back up when driving under 2000 rpm. It is barely noticeable except on the small back roads at night. It is actual the most noticeable on the dome light. I replaced a failing alternator probably a month or so ago and I don't remember it before I replaced the alternator. What could be involved with the new part to cause the flicker. Could it be bad ground connection or what? Sorry I don't have any voltage readouts or anything. I can get those tomorrow.
Postmaster
Joined: Nov 2006
Posts: 4,517
Likes: 3
From: SE Wyoming
Most likely one of those two, I'd start with cleaning both battery connections. Before my Alt. went on my CVPI it did just what you describe. I didn't even get a warning on it, when the alt. went out it went out and I had to think fast to get home on just the battery power. Usually the battery light will come on first, always a chance the replacement alt. is bad. Also check your connection at the alt., may be loose.
Hotshot
Joined: Jan 2004
Posts: 19,768
Likes: 1,082
From: St Louis
Thread Starter
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Tuned
Joined: Jan 2012
Posts: 471
Likes: 1
From: Mount Vernon, KY
Anyone have anymore insight on the cause of the pulsating electricity? It has started to be noticeable in the volume of the radio. Tomorrow I will go out and start poking things with the multimeter to see if I can find where the pulsation is starting from.
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