RESTO Here we go again. 96 GTX still over charging.

[Transmission Whisperer]

OK my 96 GTX still charging up to 17 V to the battery. The MPEM doesn’t like to see this much voltage, So it acts like it’s on the Revlimider the whole time. I’ve tried replacing the stator twice, and the rectifier/voltage regulator for times. Checked all the grounds, and harness continuity. Even ran aground from the battery to the E box, and from the battery to the engine case. Disconnecting the regulator at the red wire Kohls voltage Johnny causes a ski to run normally, but of course doesn’t charge the battery. I’m at a loss here. Any help would be greatly appreciated.

 

[Ckrawiec]

Far as I know...the rect/reg should be putting out VDC in the 14 volts neighborhood....17V is really high. The RED wire coming out of the Rectifier shows you 17V DC? Bad rectifier? What is the stator putting into the rectifier?

 

[Transmission Whisperer]

Far as I know...the rect/reg should be putting out VDC in the 14 volts neighborhood....17V is really high. The RED wire coming out of the Rectifier shows you 17V DC? Bad rectifier? What is the stator putting into the rectifier?

I have tried four different type of regulators, including OE. Initial start up will produce 13 V to the battery. It will immediately start to gradually climb up to 17 V, and of course won’t run very well like that. I checked the original stator, Didn’t appear to have any problems, but I changed it anyway to know avail. Then I tried one more regulator from eBay that was suggested from several people on this forum. The only thing that hasn’t been changed is the MPEM

 

[mikidymac]

I don't think the MPEM has anything to do with the voltage.

The 3 yellow wires from the stator produce AC voltage. These 3 wires go to the regulator that change it to DC voltage and output through the red wire. If you just put your meter on the red wire and ground you are getting the 17V?

I would check all the grounds to the regulator.

 

[Ckrawiec]

My Rect/Reg is bolted to an aluminum plate in the top half of the front electric box, so the Rect/reg ground is the plate....which also has a bunch of other grounds attached to it.
I've attached my 12V LOW dissertation which delves into the front electric box....read it for a chuckle (i tried to keep it interesting).

 

[Transmission Whisperer]

I don't think the MPEM has anything to do with the voltage.

The 3 yellow wires from the stator produce AC voltage. These 3 wires go to the regulator that change it to DC voltage and output through the red wire. If you just put your meter on the red wire and ground you are getting the 17V?

I would check all the grounds to

 

[Transmission Whisperer]

New regulator suddenly got very hot while running and stop doing anything. WTH?