Battery Light Issue

Reply Subscribe

Thread Tools

Search this Thread

Dec 17, 2017 | 09:12 PM

rmckenna

Thread Starter

New User

Joined: Oct 2005

Posts: 13

Likes: 0

From: Maine

Battery Light Issue

Have a 04 F-350 that the battery light comes on every now and then while driving. I have replaced the battery and alternator and the truck seems to be charging fine. I have noticed that the dash lights are not as bright as they use to be and when I'm plowing with the truck the lights dim when I use the plow. I think it may be a ground issue but do not know where to check for this any advise. I have the 5.4 liter motor.

Dec 18, 2017 | 12:28 AM

Tedster9

Post Fiend

Joined: Apr 2002

Posts: 19,311

Likes: 97

From: Waterloo, Iowa

Check for loose, corroded or missing ground cables and connections to block and frame. They have to be almost perfect, even invisible corrosion will cause a huge voltage drop and hork current transfer.

Dec 18, 2017 | 12:34 AM

'65Ford

Cargo Master

Joined: Jan 2016

Posts: 2,674

Likes: 376

Quote:

Originally Posted by Tedster9

X2, start with a good wire brushing on inside of the battery clamps.

Dec 18, 2017 | 03:18 AM

seville009

Logistics Pro

Joined: Nov 2004

Posts: 4,795

Likes: 47

Even though they’re new, test both the battery and alternator to see what’s actually being generated.

Dec 18, 2017 | 06:42 AM

Chuck's First Ford

Postmaster

Joined: Jul 2015

Posts: 4,392

Likes: 22

From: very South Texas

cable is NEW... old rusty bolts and nuts.. old rusty body parts..

WHAT about grounds... REAL Important...

power out and it MUST return .. no return.. NO WORK..its simple..

like breathing.. air in .. air out.. or your dead... same with electricity..

what about the connectors for alternator...

I so dislike warning lights..
I have a real Volt meter in my truck (not a cheap factory meter)