Hello,My alternator wasnt chargine bat,so took it off and had it check it was bad.bought a new one hooked it up and still not charging.so took it back to be checked and alt is good.Putting out 14.36 volts.This is stumping me.Anyone with any Ideas.?I would appreciate it
thanks..

 

Check for Voltage on the small Red wire at the regulator plug, Should 10-12 volts with the key on.

 

yes there is. battery voltage aprox 11.96 v with key on.

 

my diagram shows that wire going to pcm and up to a solid state box.it shows that it trigers voltage regulator to charge battery is that how it works??

 

That is how it works, but you may want to check that all the cables and connections, including ground cables between alternator, battery, and ground are tight and clean.

 

yes I did clean all connections,and checked alt to ground its self it has good ground.does pcm control charging or is it the gauge that triggers it on the small red wire? since I do have the volts on that small red wire with key on.

 

With the engine running, check voltage at the output wire on the alternator (big red one), should be in the low 14's. What is the voltage at there? Then check at the battery. It's not uncommon to have a .5~1 volt drop by the time power gets to the battery, but if you're in the 12 volts range at the battery, the issue is with your wiring.

 

yes tried that,there is only constant voltage 11.8 reads the same.both battery and on back of alternator.

 

With engine running, what is the voltage at the other (white?) wire on the alternator plug?

 

ill check now brb