charging system problems are done with
I have been scratching my head over why the voltage would drop from 13.8 to 12 when the lights where turned on. Same issue with the fan. What the volt gauge was telling me was the lights where draining the battery. i had the same issue with my hotrod for several years. If I turned on the lights the battery would die. My eventual solution was to toss my fully polished motorola alternator and install a 187 amp G3. The alternator in the Carryall is a Delco 12SI. By rights it should charge just fine. After several hours of searching I found out how dumb single wire alternators are and a 3 wire will last longer and have many less problems. The Carryall does have a 3 wire alternator (actually 4) but the sensor wire was pig tailed into the alternator battery wire. It came that way from the wiring kit supplier. The cure to the problem was to run the sensor wire up to the fuse box. Most alternator builders recommend to tie into the horn relay but i found that difficult. I tied into a battery supply at the fuse box.
So when I fired up the Carryall the gauge read 13.8 volts, turned on the lights and the guage dropped a tiny bit and was back at 13.8 in less than a second. Same thing when I turned everything else on, tiny drop and back to 14 and change. Sure beats dropping to 12 volts.
Two gauges left to deal with, oil pressure and oil temp. Both read high.
Off to the inspection garage tomorrow for round two.
vvrrooommm rattle, rattle, clang, clang, knock, knock, rattle, rattle, clang, clang, knock, knock.
Bruce
edit: Four wires? = Battery, Ground, exciter, sensor.
I have been scratching my head over why the voltage would drop from 13.8 to 12 when the lights where turned on. Same issue with the fan. What the volt gauge was telling me was the lights where draining the battery. i had the same issue with my hotrod for several years. If I turned on the lights the battery would die. My eventual solution was to toss my fully polished motorola alternator and install a 187 amp G3. The alternator in the Carryall is a Delco 12SI. By rights it should charge just fine. After several hours of searching I found out how dumb single wire alternators are and a 3 wire will last longer and have many less problems. The Carryall does have a 3 wire alternator (actually 4) but the sensor wire was pig tailed into the alternator battery wire. It came that way from the wiring kit supplier. The cure to the problem was to run the sensor wire up to the fuse box. Most alternator builders recommend to tie into the horn relay but i found that difficult. I tied into a battery supply at the fuse box.
So when I fired up the Carryall the gauge read 13.8 volts, turned on the lights and the guage dropped a tiny bit and was back at 13.8 in less than a second. Same thing when I turned everything else on, tiny drop and back to 14 and change. Sure beats dropping to 12 volts.
Two gauges left to deal with, oil pressure and oil temp. Both read high.
Off to the inspection garage tomorrow for round two.
vvrrooommm rattle, rattle, clang, clang, knock, knock, rattle, rattle, clang, clang, knock, knock.
Bruce
edit: Four wires? = Battery, Ground, exciter, sensor.
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