When I am driving on the highway and hit the gas to pass someone else, my battery light flickers in the instrument panel.

Only happens when the truck hits high RPMs.

Tried a new battery. (It was time anyways)
Did an electrical test.

Nothing !!!

Any help ???

Thanks
Bri

 

Your accessory belt may be slipping???

Dan

 

Your belt is sliping or you have a bad pulley would be my best guess

 

its a bad alternator, see it all the time, contours are the worst about doing it.

 

Thanks guys !

I actually just had a new balancer pulley and belt installed and its still doing it !

The technician told me that the alternator was fine, but I'll look into it some more.

Thanks again
Bri

 

We'll see in the end....

 

Keep us posted on what it is and how it turns out.

 

Did u get a new alternator yet?