My amp keeps going into protect mode

[Dishmen8]

My amp in my g29 goes into protect mode when ever it gets revved up and goes back to normal when u stop . Works just fine when it is sitting , I checked voltage and it spikes up to 16 volts while driving , looking for suggestions, thanks in advance

[cgtech]

Sounds perfectly normal for a Yamaha charging system to me.

[CP241]

Too much voltage for the amplifier. You'll either need a voltage stabilizer, or get a different amplifier with a more tightly regulated power supply. I believe the JL Audio amps will work up to around 16v but not much more than that.

[sformal]

Originally Posted by Dishmen8

...I checked voltage and it spikes up to 16 volts while driving...

After having installed a "home made" voltage regulator, I noticed that at low rpm (<2,500), all is fine but going up, the starter/generator does not produce electricity anymore...

Roughtly said, an arduino gets the voltage and open/close a relay depending of the value. This relay sends the minus to the starter to produce electricity. I added Bluetooth to be able to read/record the values in real time and change the min/max voltage easily. Actually, I limit at 13.8 (which rarely goes to 14.2 max) and restarts at 13.0.

A couple of months before, I cleaned the starter/generator, changed the bearings, carbon brushes...

Strange reaction I would like to investigate, IMHO it should work or not... Any experience on that CGTech?