OK so here is my problem:
Alternator bearing loud for a couple years, decide to replace because dash light occasionally came on and lights dimmed etc. Figured it was finally going out. Replaced easy. Start it up...light stays on. Meter and it's not charging.
B1 = 12.3V
P1 = 12.3V key off
= 9.1v key on
P2 = 0.30 key off
= 0.83 key on
Engine running is similar
Tracked 2 pin plug to 4 pin plug under battery.
Appeared to have 11.5v P1 and 11.2v P2 at source side of plug and the low numbers on alt side so... Splice magic and I have 11.5v and 11.2v key on now. Yaaaayy! Nope... Start engine and poof... P1 is 9.0v P2 is 0.80v, no charge etc etc.
I have tried direct jump to 12v and every suggestion for testing etc on all pins and Yada Yada. Lol
It almost seems like the ecm or? Once engine is started just decides... not today sir.
Battery is daily and tested good red top Optima with a 2nd good tested battery sitting next to it in case. Alternator is new, taken off and tested 14.5v. Got a 2nd new Alternator... Took to test taped up from manufacturer. Good to go 14.5v. All wires/connectors free of corrosion or cuts. Fuse link is good and no melting etc.
I am open like a 24 hour gas station for any ideas or blunt "this is your issue" helpful helps.😁
Alternator bearing loud for a couple years, decide to replace because dash light occasionally came on and lights dimmed etc. Figured it was finally going out. Replaced easy. Start it up...light stays on. Meter and it's not charging.
B1 = 12.3V
P1 = 12.3V key off
= 9.1v key on
P2 = 0.30 key off
= 0.83 key on
Engine running is similar
Tracked 2 pin plug to 4 pin plug under battery.
Appeared to have 11.5v P1 and 11.2v P2 at source side of plug and the low numbers on alt side so... Splice magic and I have 11.5v and 11.2v key on now. Yaaaayy! Nope... Start engine and poof... P1 is 9.0v P2 is 0.80v, no charge etc etc.
I have tried direct jump to 12v and every suggestion for testing etc on all pins and Yada Yada. Lol
It almost seems like the ecm or? Once engine is started just decides... not today sir.
Battery is daily and tested good red top Optima with a 2nd good tested battery sitting next to it in case. Alternator is new, taken off and tested 14.5v. Got a 2nd new Alternator... Took to test taped up from manufacturer. Good to go 14.5v. All wires/connectors free of corrosion or cuts. Fuse link is good and no melting etc.
I am open like a 24 hour gas station for any ideas or blunt "this is your issue" helpful helps.😁