What is wrong with my alternator

[Anthonyd516]

attached in a thermal image of my alternator. I have a brand new belt on it (crossed psrt number with oem). I also tool the belt off to turn the alt by hand and it feels smooth also no weird noises. Yet no matter what i do it will start burning the belt over idle. Its putting out 13.8 watts and when i checked the amps it was charging at 50 amps. The belt also is not loose.

 

[Anthonyd516]

 

[flashback]

Think you meant 13.8 volts and if it's putting out 50 amps it would get hot. Must be a weak battery.

Nice pic!

 

[Davetowz]

50 Amps is probably full fielded. Agree, check battery or corroded connections.

 

[SternDriveEd]

I also suspect a battery issue causing the alternator to go into full output mode. I suggest that you pull the battery/ batteries and have them load tested at a trusted shop. When removing the battery clean the connections on the battery terminals and the cable ends.

 

[Anthonyd516]

Think you meant 13.8 volts and if it's putting out 50 amps it would get hot. Must be a weak battery.

Nice pic!

Yes volts i meant. The batteries are reslly strong theyre deepcycle and can have my lights on for days (literally) without killing them. One thing i thought of is that i removed my battery isolator…

 

[Anthonyd516]

so there was a loose connection on battery switch. Now it is only running 1 amp but the orange wire is still almost melting. Doesn’t make any sense

 

[Silvertip]

Where and how are you reading the Amps?

 

[jimmbo]

Have you checked the Electrolyte Level in the Batteries lately?

 

[Anthonyd516]

It ended up being the terminal end on the positive terminal of the alternator.