I have just returned from Prevost Jacksonville for service. I had the ABS system checked. The code (273) read out that there was an over voltage. They reset the code and all was fine. The ABS light went out at 4 mph.

I headed out of Jacksonville and headed south, the voltage meter was reading about 29 volts which is what it normally reads. I had planned on stopping at ext 129 off 95 for diesel at the Pilot and say hello to Mike Kerley ($268 P/G), as I was heading off the ramp I noticed that my voltage meter on the dash was starting to hunt, hunting up and down by a few volts, the dash lights were dimming as well and hunting up and down the same, then all of a sudden the ABS light came back on, my guess is that the ABS computer sensed an over voltage again.

I filled up the bus with diesel and headed back onto 95 S. The voltage meter was still hunting, lights doing the same. I turned the genset on and in about a minute the voltage meter stopped hunting and dropped to 25 volts (from 29 volts) settled in nicely.

My question and thoughts: Is it possible that the Voltage regulator is not functioning correctly?? My reason is that when the Genset is running the voltage drops to 25 volts and the battery charging light comes on. Is this a sign that the regulator is not working correctly or is the output of the Alternator setting too high or not working at all??? I am confused.

Summary:

1.Left Jax: Voltage is 29 volts not hunting, ABS is normal all is well.
2. 200 miles later the voltage meter is hunting up and down, the ABS light comes on and the dash lights are also hunting up and down.
3. I turn on the genset the voltage meter stops hunting the voltage drops from 29 volts to 25 and settles in nicely, the battery dash charge light is on.

Anyone have a clue.