Low alternator charge at idle

[Crackedback]

You need to measure voltage, not resistance.. And it should be done with everything connected & the engine running..

The picture shows how to back probe a connector... I use sewing needles.... They are using a fancy tool that they sell... My way is the old cheap way..

View attachment 1758411

Do you have a thimble or two around. Your quilting club must be pissed with the missing needles!

Awesome working hack using the sewing needles. Well done

 

[1 Wild R/T]

Do you have a thimble or two around. Your quilting club must be pissed with the missing needles!

Awesome working hack using the sewing needles. Well done

Back when I was working in the trade lots of guys would use pins & needles... Many would go straight to puncturing the wires insulation... I always tried to back probe connectors but if that failed I would poke the insulation... Ya gotta get your test results to diagnose stuff somehow...

 

[Kern Dog]

I read "resistance" in post # 94 and took it literally.

 

[1 Wild R/T]

I read "resistance" in post # 94 and took it literally.

Thing is that blue wire going to the regulator is the reference voltage the the regulator needs to know when to force the alternator to charge... So if the wire has high resistance and the voltage going to the regulator is 2 volts low the alternator will charge 2 volts high....

The test should be looking for voltage drop... The reason for voltage drop is resistance... You could ohm the wire but the ohm meter may not push enough amperage through the wire to reveal a problem....