High voltage

Asked by Jan 16, 2017 at 12:31 PM about the 1999 Ford F-150

Question type: Maintenance & Repair

It's a new alternator only 3 days old.
Reading 15.3 voltage out of alternator but
still running high voltage through my
truck.the battery is getting a charge but
when my Rpm goes up my battery gage
goes up to high. All my Gage's start acting
up my lights in side cab quit working only
my dim lights will turn on and my dash
lights get brighter windows doesn't have
power to them. When I come to an idol
everything comes back to normal. I've
changed the regulator out of the first
alternator i put in there still had the
problem. I bought a brand new alternator
the one that is there now. Only been in my
truck for 3 days. Still having the problem  

2 Answers

87,155

VOLTAGE REGULATOR IS CAUSING THIS!

1 people found this helpful.
87,155

Sounds like you are burning things up, frying bulbs and who knows what else.

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