alternater

[handmedownreatta]

my dash light sometimes flickers so i turned to the guage screen.the voltage hovers at 13.8 but sometimes jumps to 16 around when the dash light flickers.i assume this means my voltage regulator built into the alternater is bad.i just replaced the alternator five?years ago.

[Ronnie]

You are probably right but it might be a good idea to check your battery cable and ground connections to make sure they are clean and tight.

 

 

Edited October 10, 2020 by Ronnie (see edit history)

[padgett]

I have seen bad connections cause very large voltage fluctuations if the battery is suddenly disconnected. Some connection is probably failing possibly at or in the battery.

[bikemikey]

I had a similar problem a while back.  On a cold engine it would start okay and no red battery light. But on the road, warm engine , the battery light would start going off and on.  Eventually it would stay on until the engine cooled down. Thinking it was the alternator I had it rebuilt, same problem. It turned out to be an alternator bent pulley shaft. I changed out the alternator , new belt and tensioner.  I have not had any problems since. Hope you find your problem. 

Mike