Community Forums

jssj66 · 05-15-2019, 10:52 AM

I have a 2000 Monaco Diplomat that will only start while holding the AUX start switch, and run while holding but dies when I release the switch. is this a solenoid issue? HELP!

Ranger Smith · 05-15-2019, 11:22 AM

Sounds like your chassis battery and or alternator could be bad. Also possibly be of the one of the battery solenoids bad.

twinboat · 05-15-2019, 11:41 AM

Holding the boost switch introduces the house battery into the chassis circuit.

That means that the chassis battery circuit is not doing its job.

Dead battery, bad battery terminal connections ( don't look at them, remove and clean them ), bad ground cable connection at chassis connection, if equipped, bad chassis battery disconnect.

Start at the chassis batteries and follow the power.

jssj66 · 05-15-2019, 12:18 PM

Quote:

Originally Posted by Ranger Smith

Sounds like your chassis battery and or alternator could be bad. Also possibly be of the one of the battery solenoids bad.

That’s what I was thinking. I’m praying it’s the solenoid, much cheaper fix! Thanks

jssj66 · 05-15-2019, 12:21 PM

Quote:

Originally Posted by twinboat

Holding the boost switch introduces the house battery into the chassis circuit.

That means that the chassis battery circuit is not doing its job.

Dead battery, bad battery terminal connections ( don't look at them, remove and clean them ), bad ground cable connection at chassis connection, if equipped, bad chassis battery disconnect.

Start at the chassis batteries and follow the power.

All good suggestions. I will clean and reconnect everything and hopefully have progress! Thanks!

winniman · 05-15-2019, 02:07 PM

Put a tester on your engine battery, and see what the voltage is. Im betting its under 10 volts. That would be why the engine shuts off. The computer needs proper voltage or it will not work.

jssj66 · 05-15-2019, 07:54 PM

Installed a new solenoid, tested batteries (13.9v) connections are clean and tight and still nothing. Looked around the wires near solenoid and found an exposed (brittle) wire with some existing brown insulation connected to what appears to be a high voltage relay or something. I disconnected and taped with thick electrical tape and tried again. Rechecked the wire and found the tape melted. I disconnected the batteries until I can find where this wire goes and replace

jssj66 · 08-11-2019, 08:24 PM

Ok, it’s been a while since my last post. All my problems turned out to be a major short and a fried computer! Yay me. We since had it repaired and actually took it on the road. We trusted our mechanic and traveled from Massachusetts to Arkansas to visit family! A big shout out to Majors RV in Borne Massachusetts