Bighorn 4JB1

metrider, Oct 23, 10:53pm
Just decided to stop charging the other day. Alternator poked! Where should I start with testing! Are there fuses/relays that i should test before pulling the alternator out!

therafter1, Oct 23, 11:16pm
Multimeter, connect to + and - battery terminal with motor running, reading should be between 13 and 14 volts.

therafter1, Oct 23, 11:17pm
Yes there is a main fuse associated with the charging system, but you still need to determine the charge rate, then go after the fuse.

andy61, Oct 23, 11:24pm
Common fault,replace relay when you replace/repair alternator

metrider, Oct 23, 11:30pm
I've got a voltmeter installed in the truck so I am aware that I don't have charging voltage on the battery. Where is the fuse and relay located just so as I can rule this out before pulling it all to bits!

zooki007, Oct 24, 2:28am
Ask for any info on your Isuzu on this site . http://www.clubisuzu.com/index.php