battery light and voltage drop occasionally
Thread Starter
|
Hotshot
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
battery light and voltage drop occasionally
I couple years ago i installed a 140amp alternator inplace of the 110amp alt. My batteries are 2 yrs old (Motorcraft) and occasionally when its been below 50 degrees outside i see my battery light flickering and my scan gauge shows 11.9-12.5 volts. it seems this continues till the engine gets up to about 120-140 degrees and is back to normal.
would this be a sign of bad battery wires, alt harness, alternator or batteries?
Truck has 170k miles on it.
I appreciate your feedback and suggestions
would this be a sign of bad battery wires, alt harness, alternator or batteries?
Truck has 170k miles on it.
I appreciate your feedback and suggestions
Hotshot
Joined: Apr 2010
Posts: 19,060
Likes: 238
From: Saratoga Springs,UT
Normally a sign of bad alternator with that light doing the flickering
But you will want to clean inspect cables and have batteries load test
there is a Ford alternator pinpoint test
it was more accurate then having a parts store test the alternator on there machine (kids working have to many pulley options when hooking it up they spin it to fast what then shows good part when it really not good at lower rpm)
someone should be along with the alternator pinpoint test my PC is down at the moment
But you will want to clean inspect cables and have batteries load test
there is a Ford alternator pinpoint test
it was more accurate then having a parts store test the alternator on there machine (kids working have to many pulley options when hooking it up they spin it to fast what then shows good part when it really not good at lower rpm)
someone should be along with the alternator pinpoint test my PC is down at the moment
Hotshot
Joined: Dec 2014
Posts: 17,827
Likes: 3,111
From: Jersey Shore
Lately, it seemed like others were able to do it.
If you want to try a voltage regulator change, I think you need an F600HD. But I have not tried it.
To change it, I made a video about clocking or changing the VR. I used AI for the voice for the video, as mine was in bad shape.
If you want to try a voltage regulator change, I think you need an F600HD. But I have not tried it.
To change it, I made a video about clocking or changing the VR. I used AI for the voice for the video, as mine was in bad shape.
Thread
Thread Starter
Forum
Replies
Last Post
bigcountry1009
1999 - 2016 Super Duty
4
Oct 3, 2022 04:27 PM
