How does the first gen regulate from altenator to battery?
#1
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Thread Starter
How does the first gen regulate from altenator to battery?
Old cars had voltage regulators, IIRC, the dodge diesel had a "program module" - not a stand alone voltage regulator. Back in the early 2000s, maybe off this board, I bypassed the computer on my 98 and actually installed an old fashioned mopar voltage regulator, but it's been so long I have forgotten where I got it from and how. Anyone done this to a first gen?
#2
Registered User
IMHO the regulators you get now are mostly junk so I wouldn't go there. I used the transpo 8315 kit on my 90 plowtruck (it will also work on the newer computer controlled thrucks) and doing fine after 3 years, you can also get a one wire alternator that's internally regulated although they are kinda spendy
#3
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Thread Starter
IMHO the regulators you get now are mostly junk so I wouldn't go there. I used the transpo 8315 kit on my 90 plowtruck (it will also work on the newer computer controlled thrucks) and doing fine after 3 years, you can also get a one wire alternator that's internally regulated although they are kinda spendy
Oh, this is exactly what I needed to know- will this work on our CTD?
https://www.ebay.com/itm/38440864579...hoCtFsQAvD_BwE
#4
Registered User
Not sure I always just used the transpo kit
#5
Administrator
To answer the original question on a 90 anyway. The vr uses a contact on the ignition switch to determine the battery voltage. The problem that happens is that rust and other crud on that wire causes resistance which lowers the voltage reading and causes overcharging of the battery. Anything 15 volts or more will destroy the battery quickly, ask me how I know. The easy solution is to run a wire directly from the battery to the vr through a relay. There are only two ways that overcharging happens, a bad vr and resistance in the control wire. There are a few good threads on this…Mark
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#6
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Thread Starter
Oh, this is exactly what I needed to know- will this work on our CTD?
https://www.ebay.com/itm/38440864579...hoCtFsQAvD_BwE
https://www.ebay.com/itm/38440864579...hoCtFsQAvD_BwE
#7
Registered User
On my truck after I installed the kit I had to unplug the regulator to make it work
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#8
Registered User
To answer the original question on a 90 anyway. The vr uses a contact on the ignition switch to determine the battery voltage. The problem that happens is that rust and other crud on that wire causes resistance which lowers the voltage reading and causes overcharging of the battery. Anything 15 volts or more will destroy the battery quickly, ask me how I know. The easy solution is to run a wire directly from the battery to the vr through a relay. There are only two ways that overcharging happens, a bad vr and resistance in the control wire. There are a few good threads on this…Mark
Edwin
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maybe368 (11-06-2021)
#9
Administrator
Hi Edwin I hope you are doing well in Ok. Rust is the primary problem in most of the weird things these trucks do in regards to electrical problems and ground checking should be first on the todo list. Mine burned up a 350 dll odyssey a few miles from home and there was really nothing I could do about it alongside I-10. Rust complicates diagnosis of weird electrical problems. I live in sunny Az and still get fooled by hidden rust. I can’t even imagine how it is in the rust belt… Mark
#10
Registered User
Hi Edwin I hope you are doing well in Ok. Rust is the primary problem in most of the weird things these trucks do in regards to electrical problems and ground checking should be first on the todo list. Mine burned up a 350 dll odyssey a few miles from home and there was really nothing I could do about it alongside I-10. Rust complicates diagnosis of weird electrical problems. I live in sunny Az and still get fooled by hidden rust. I can’t even imagine how it is in the rust belt… Mark
We looked at AZ as a place to move to on our escape from Commiefornia but property prices were just to high. The price we paid for this place was just to good to pass up. $35K for a house, garage outbuildings and 2 acres.
Hope you're doing well.
Edwin
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nonrev (11-07-2021)
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