lights pulsing
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Fleet Mechanic
Joined: Feb 2010
Posts: 1,742
Likes: 5
From: Near St. Joseph,MO
lights pulsing
Ok, I'm pretty sure I know the answer, but I'm sick and not thinking too clearly.
All the lights on the truck pulse while driving, is that the alt going out? All of my grounds seem to be good and battery is fine. Truck has no other electrical issues, and this one isn't a big deal but it kind of bothers me at night.
All the lights on the truck pulse while driving, is that the alt going out? All of my grounds seem to be good and battery is fine. Truck has no other electrical issues, and this one isn't a big deal but it kind of bothers me at night.
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
There are a few possibilities:
1) Voltage regulator on its way out.
2) Ground to voltage regulator bad. This can be tested by jumping one of the regulator mounting bolts to clean, unpainted metal on the engine and seeing if the problem goes away.
3) Alternator can't keep up (voltage regulator is signalling for it to put out more current, but it can't).
1) Voltage regulator on its way out.
2) Ground to voltage regulator bad. This can be tested by jumping one of the regulator mounting bolts to clean, unpainted metal on the engine and seeing if the problem goes away.
3) Alternator can't keep up (voltage regulator is signalling for it to put out more current, but it can't).
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