Battery gauge flatlines

khd995

Active Member
I've got a 2004 Dogdge 2500 quad cab. Once on each of the last two days the battery gauge flatlined on me. It stayed flat lined for about 20 seconds during which the check gauges lite comes on. Then the gauge comes back to life with full power and the check gauges lite goes off.

Anyone have any idea what would cause this.
 

fljlcw

Well-known member
check the connections at the alternator batteries and ground wires if they are all clean and tight than it could be your alt.
Fred
 

khd995

Active Member
Original batteries.

It goes to the position it is in when turned off. What I saw it do was, suddenly the battery gauge went completely flat, like I had just turned the truck off. Then just as suddenly, popped right back on and ran the next 60 miles without incident. I checked the battery cables yesterday, all four cables were tight. Then this morning, just like yesterday shortly after starting the truck(within 5 minutes) flatline. Then back it comes and runs fine. W
When it flatlines the truck continues to run fine, wouldn't even notice it if the check gauge lite and chime didn't happen.
 
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