• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Adjustable Electronic Voltage Regulator ?

R

rustytoolss

Well-Known Member
Local time
5:55 AM
Joined
Mar 4, 2018
Messages
669
Reaction score
216
Location
New Franklin, Ohio
Any of you that have use the adjustable electronic voltage regulator, Have you had an issues with them ?...My regulator is charing around 15.0 volts, higher than I would like.. I've seen in FSM it may charge above 15.0 in colder temperatures (below 80*)..But I have never seen that , maybe you have.
 
I had an adjustable regulator on an airplane that I built, never had any issues with it, but agree with dadsbee. Seems like 15 would be a hair high, but is that accurate.
 
Could also have a cell going bad in battery, how old is battery?
 
rustytoolss said:
It's a mopar electronic regularor..old one , battery is charged up..getting about 15 volts.
Click to expand...
Have you checked the case ground and voltage drops in the wiring?
 
I have the same as Kern Dog and it works great. Yours is likely overcharging because of voltage drops that @hunt2elk asked about... mine was. If you measure the voltage reference at the regulator, I bet it's somewhere in the 13.5V range. On my RR, basically every electrical connection was a slight voltage drop when under load; add them all up and the 1.5V drop means your regulator is seeing 13.5V but the alternator is outputting 15V.
 
I have a 66 and a 67 with electronic regulator charging as high as 15.4 volts as do a couple other electronic ones I’ve purchased. I had to go back to mechanical regulators to get back down into the 13.8 -14.2 range. Mechanic regulators at least can be adjusted although it’s kind of a pain. No one here knew of a source for an electronic regulator for my car’s era that put out 13.8 volts +/-.

Grounds and wiring resistance are going to affect mechanical and electronic regulators. If your car worked fine with a mechanical regulator, then it will work fine with an electronic one. If not it’s the regulator’s calibration.
 
dadsbee said:
Ok, but the only way I know which you have is that you stated same as KD's. Details help troubleshoot...
Click to expand...
The 1970 and later design...

1741153548858.png


1741153907301.jpeg
 
The Transpo adjustable regulator has been working good for me with the 136Amp Denso alternator.
If overcharging with newer style 1971+ type regulator, disconnect the regulator connector, and it it still overcharges there is a short on the field ground side. Sometimes the brush holder shorts to the case, or the wire to the regulator is pinched. If it stops charging, then look at the regulator. Re-connect regulator, and check the voltage difference at the regulator compared to the alternator output. They should be fairly close in voltage, but there are many places for resistance voltage drops between the circuits which could make the regulator "sense" a lower voltage than the alternator is outputting.
 
dadsbee said:
I know what 70 and later design is, the question put forward was "what year car", which the OP only "answered" by stating his was like yours.
Click to expand...
I don't think the year will help much, it's a 1962 Fury.. I put a 78 amp chrysler alternator, and a chrysler electronic regulator on it.
 
You must log in or register to reply here.

Similar threads

0DegreeEngineer
Voltage regulator or???
Replies
3
Views
1K
Some Car Guy
S
D
voltage regulator testing
Replies
19
Views
1K
DAH
D
E
Electronic distributor and voltage regulators
Replies
5
Views
1K
chrger1967
C
Mopar John
  • Locked
SOLD NOS Electronic Voltage Regulator 2875400 Dated 25th week 1969
Replies
1
Views
739
dadsbee
dadsbee
twecomm
Gauge voltage regulator.. how does it work ?
Replies
2
Views
828
RJRENTON
RJRENTON
Auto Transport Service
Back
Top