High Charging Voltage

[money pit]

I installed a electronic ignition conversion kit from Mancini Racing. I noticed when the engine is cold (fast idle), the system is charging at 18 volts. When the idle comes down, it charges at 15 volts. Before the conversion it was charging a little under 14 volts. I grounded the ECU directly to a ground from the battery. If I need to change the voltage regulator should I go to source like Classic Industries, Year One, etc. or go to an auto parts store. Thanks.

 

[70chall440]

The electronic ignition conversion should not have any effect on your charging system assuming you wired it as per the instructions. This sounds like a voltage regulator (VR) issue. Up to you where you get one but personally I would source it locally, much easier to return when it goes bad or doesn't work. IMO they are all made pretty much in the same place, however some do have better QC than others (NAPA..) and there is a guy online that has an adjustable VR. I get mine at the local O'Reillys.

 

[themechanic]

I thought I had an over charging problem once. Turned out to be the adjustable voltage meter. Checked at the battery with a multimeter and adjusted the voltage meter accordingly.

 

[money pit]

The electronic ignition conversion should not have any effect on your charging system assuming you wired it as per the instructions. This sounds like a voltage regulator (VR) issue. Up to you where you get one but personally I would source it locally, much easier to return when it goes bad or doesn't work. IMO they are all made pretty much in the same place, however some do have better QC than others (NAPA..) and there is a guy online that has an adjustable VR. I get mine at the local O'Reillys.

I followed the installation exactly. I'll check with the local O'Reilly. Thanks

 

[money pit]

I thought I had an over charging problem once. Turned out to be the adjustable voltage meter. Checked at the battery with a multimeter and adjusted the voltage meter accordingly.

I checked it at the battery, same as the voltmeter in the car. Thanks

 

[Cuda Hunter]

Purchase an extra vr and put it in the glove box.
I also have an extra ballast resistor.
Just sayin

 

[money pit]

The electronic ignition conversion should not have any effect on your charging system assuming you wired it as per the instructions. This sounds like a voltage regulator (VR) issue. Up to you where you get one but personally I would source it locally, much easier to return when it goes bad or doesn't work. IMO they are all made pretty much in the same place, however some do have better QC than others (NAPA..) and there is a guy online that has an adjustable VR. I get mine at the local O'Reillys.

I replaced the voltage regulator, no change.

 

[money pit]

Purchase an extra vr and put it in the glove box.
I also have an extra ballast resistor.
Just sayin

I just replaced the voltage regulator, still charging 15 Volts.

 

[moparleo]

 

[casper]

I'm having ,some what the same issue. Mine is at 17volts. I replaced the voltage regulator. No change. I suggest that you have your alternator tested to eliminate it from the equation. After that test the votage to it, the wite to the vr and proceed back. Mine has 10.5v. Going to the alternator and vr. Which is telling them to increase alternator output to charge the battery. My battery is at 12.5 v creating an overcharge. When you hit 12.5v. The issue should be that component or between it and the next one.

 

[Steve340]

I believe the voltage regulator must be earthed.
It would pay to check that.

 

[Avalanche]

I had the same problem 18v. Bought a new vr and still at 16v. Got my hands on a original vr, 12v. My problem was that even the new vr's were not any good.

 

[Cratos]

be sure you have a good ground to the block from the fire wall. grounds are always a problem.

 

[casper]

I believe the voltage regulator must be earthed.
It would pay to check that.

Did that . I growned it directly to the block. No change

 

[Cratos]

try a ground direct from the reg to the block I daisy chained reg ecu to block just to make sure