And Now, The Alternator/charging system... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Shaffer4 · 10-10-2008, 05:28 PM

So, now that I got the Starter fixed, I still need to resolve the charging system. I replaced the alternator from the same source I got the starter, after having it tested of course, but I am still only getting 12.42-3 on the meter while its running.

My next step is to swap out the Voltage Regulator, but I am also open to any other suggestions.

hchad18 · 10-10-2008, 07:39 PM

Is that at idle?

Shaffer4 · 10-11-2008, 12:48 AM

yeah

hchad18 · 10-11-2008, 02:11 AM

What is it at when you rev it up to 1500 rpm?

Shaffer4 · 10-11-2008, 05:13 PM

okay, I'm getting 13.4ish at around 1500, but shouldn't it be higher at Idle?

Shaffer4 · 10-11-2008, 09:38 PM

Well, I played a hunch and went ahead and put in the Regulator out of the parts truck (the truck I am working on had an after market replacement) and bingo 14.80 across the posts

So, the alternator was probably alright.... but the post out of the back was loose and wiggly... (I had fun doing the Alt swap too, because the top hole was stripped and the bolt broke off and I had to swap out the front cover between alts.

And the morale of this story is next time I'ma get me a one wire Alt and do it right

Thus is the price of doing things for free...

Next: Rebuild the Carb and change out the tires but thats another story for another day.

10-10-2008, 05:28 PM	#1
Shaffer4 Strange Cousin From The West.. Join Date: Jul 2007 Location: Walla Walla, Wa Posts: 248	And Now, The Alternator/charging system... So, now that I got the Starter fixed, I still need to resolve the charging system. I replaced the alternator from the same source I got the starter, after having it tested of course, but I am still only getting 12.42-3 on the meter while its running. My next step is to swap out the Voltage Regulator, but I am also open to any other suggestions.

10-10-2008, 07:39 PM	#2
hchad18 Registered User Join Date: Mar 2006 Location: AZ Posts: 372	Re: And Now, The Alternator/charging system... Is that at idle?

10-11-2008, 12:48 AM	#3
Shaffer4 Strange Cousin From The West.. Join Date: Jul 2007 Location: Walla Walla, Wa Posts: 248	Re: And Now, The Alternator/charging system... yeah

10-11-2008, 02:11 AM	#4
hchad18 Registered User Join Date: Mar 2006 Location: AZ Posts: 372	Re: And Now, The Alternator/charging system... What is it at when you rev it up to 1500 rpm?

10-11-2008, 05:13 PM	#5
Shaffer4 Strange Cousin From The West.. Join Date: Jul 2007 Location: Walla Walla, Wa Posts: 248	Re: And Now, The Alternator/charging system... okay, I'm getting 13.4ish at around 1500, but shouldn't it be higher at Idle?

10-11-2008, 09:38 PM	#6
Shaffer4 Strange Cousin From The West.. Join Date: Jul 2007 Location: Walla Walla, Wa Posts: 248	Re: And Now, The Alternator/charging system... Well, I played a hunch and went ahead and put in the Regulator out of the parts truck (the truck I am working on had an after market replacement) and bingo 14.80 across the posts So, the alternator was probably alright.... but the post out of the back was loose and wiggly... (I had fun doing the Alt swap too, because the top hole was stripped and the bolt broke off and I had to swap out the front cover between alts. And the morale of this story is next time I'ma get me a one wire Alt and do it right Thus is the price of doing things for free... Next: Rebuild the Carb and change out the tires but thats another story for another day.

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