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Showman1 · 10-02-2017, 10:15 AM

05 nanavigator dd.series 60 lost all power. Engine a gen shut down. Breaker by big boy is tripped. Big boy is hot? Don't know what to do. Waiting on road service. Don't know of they are capiable or not. Any advice? Can call if you like. Rick.352 895 3414

BFlinn181 · 10-02-2017, 12:20 PM

If the engine and the generator don't work, I'd suspect bad fuel. If the engine and generator are off, I'm not sure why the 'Big boy' solenoid would be hot, it only comes into play when a charging voltage is present and when the boost switch on the dashboard is held down.

Showman1 · 10-02-2017, 12:44 PM

Not fuel. Everything dead at dash. Have house electric. No ignition. Flashers

nothermark · 10-02-2017, 12:53 PM

What's the engine battery voltage?

BFlinn181 · 10-02-2017, 12:55 PM

If you have a battery disconnect solenoid for the chassis, I'd check for 12v on both large terminals on the solenoid. If one side doesn't show 12v, take the wire off one larger terminal and connect it to the other large terminal. This will bypass the solenoid and should allow chassis battery power through to the rest of the chassis.

Showman1 · 10-02-2017, 04:26 PM

Having it towed to Williams in Atlanta.

cpr_vbg · 10-02-2017, 06:07 PM

Had a similar issue a couple of years ago. The cause of my power failure was the main cutoff switch for the chassis (rear electrical compartment near the batteries). it basically fell apart internally. It looked ok from the outside of the switch. I bolted the two wire leads together until I get a replacement switch from Amazon.

YC1 · 10-02-2017, 07:23 PM

It sounds like an easy fix. Loss of battery power and may be the switch mentioned.

The Big Boy running rather hot is not a concern. On some units the big boy can burn your fingers.

The switch mentioned normally would not be a serious issue with the engine already running because that big boy should be combining those circuits which would substitute the power missing from the engine batteries.

HOWEVER, if the Big Boy is bad, as often is the case you would NOT have the combining thus loose the coach batteries as the backup.

Even though the Big Boy is hot does not mean the contacts inside are functioning as designed. You can get hours of fun reading by putting the key word Big Boy in the little google search area at the top of this forum. It will sort things for you to eliminate a lot of garbage.

1doodadd · 10-02-2017, 08:05 PM

I had the same thing with the very same engine series 60 detroit. Running fine then just quit and dead on the side of the road. Wire from the batteries to the ECM became disonnected from batteries and the loss of power 12.8 volts was the problem. Reconnected the wire and was able to get back on the road.

vito.a · 10-03-2017, 08:56 AM

Rick,
Sorry for your trouble. Were you able to sort out what the issue was?

**TonyDi** · 10-03-2017, 09:53 AM

Sounds like the battery disconnect switch or battery lines loose.

2-Nickels · 10-03-2017, 01:29 PM

When I had my 04 Navigator I had it go dead on me. I drill every it into a service bay for an oil change and it sat there for 4 days. After the oil change the service shop went to start it and nothing. The problem was one of the switches in the rear engine compartment was in an open state and not allowing voltage. It took the shop 3 days to diagnose this, thank filly they were fair on the bill.

Best of luck,

2-Nickels

distaff · 10-03-2017, 07:37 PM

Showman1 - don't forget to post what you learn.

Showman1 · 10-18-2017, 07:03 PM

Finally home from the trip. Wanted to let everyone know what happened. WW Williams found battery cables to the generator were shorted out on the frame. And the 150 amp. Breaker in the rear run box was burned out. Once it was fixed i continued with my trip with no problems. 2500 miles and two weeks in the coach. It took 3 day in the shop. One whole day to find the short. And then they had to order a breaker. Their bill was $2000. Road side mechanic was there for 5 hours and accomplished nothing.. That cost $500. The tow cost $1500. I think the insurance co.will cover the tow,the did on my old coach a few years ago.
So overall it was aggravating but I survived. I still love driving and staying in the coach,this is part of the adventure. Like they say. It could of been worse.. Thanks to everyone for there help..