Overcharging 16.0v

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Slappy

Slappy

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Not sure whats going on. Here are some of my voltage readings.

Battery 16.0v
back of alt 16.0v
one field wire 14.8v at reg
one field wire at reg 10.5 v

all with car running. I installed a new regulator. The alternater has very low run time. It is a chrome powermaster amp is unknown. I also put a amp clamp around the neg cable and im only reading 12.0amp. I put it around the pos cable and Im reading 3 amp? I am a bit confused as how this system works. Any insight or help would be appreciated.
 
What year car?

Just a guess, mixed old style regulator with new style alternator?
 
Gryzynx said:
What year car?

Just a guess, mixed old style regulator with new style alternator?
Click to expand...

Yes, tell us about the set up.

Could be this or the battery could be going bad. What you said about it only putting out a few amps but the voltage is so high leads me to believe it's the battery. I see this at work sometimes.
 
Slappy said:
Not sure whats going on. Here are some of my voltage readings.

Battery 16.0v
back of alt 16.0v
one field wire 14.8v at reg
one field wire at reg 10.5 v

all with car running. I installed a new regulator. The alternater has very low run time. It is a chrome powermaster amp is unknown. I also put a amp clamp around the neg cable and im only reading 12.0amp. I put it around the pos cable and Im reading 3 amp? I am a bit confused as how this system works. Any insight or help would be appreciated.
Click to expand...

on your clamp did you have it facing the proper way on the positive?
 
The car is a 75 Dart Sport. It has a 360 in it. The ignition system is mopar performance elctronic. The regulator has two wires. 1 blue and 1 green. Im not sure what the difference is in regulators. I can post pix if needed. I dont believe the amp clamp was on wrong but it may be possible I will check again on monday.
 
Get out your digi meter and do some checking. What you are looking for is "voltage drop. Get the car running at a high idle with the battery charged, and make these checks with all accessories off, then repeat with the headlights, heater, etc, on

Stick a meter probe DIRECTLY onto the battery negative post. Stick the other probe directly onto the case of the regulator. You should read VERY low voltage, the lower the better (zero is perfect) If you read more than .2 (two tenths of a volt,) you have a ground problem.

Stab a probe directly onto the battery positive post. Stab the other onto the ignition terminal of the regulator. Once again, you should read very low, the lower the better, same as above.

Pull your battery terminals and CLEAN them.
 
I will bring my meter home from work and re-check and will post my findings. Thanks for all the help guys.
 
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