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jayhorowitz's avatar
jayhorowitz
Explorer
Mar 19, 2014

Alternator doesn't charge house batt until press emerg start

I just purchased a 2000 Tioga 23B (Class C) motorhome. The motorhome is equipped with an emergency start switch which starts the engine using an assist from the house battery. When I start the engi...
OnaQuest's avatar
OnaQuest
Explorer
Mar 19, 2014
Is there a small device near the solenoid that has these words on it?

You may need to trace the wires that go to the small terminals on the side of the solenoid. The large terminals are the ones that actually connect the batteries together.

It sounds like the IRD is not putting out enough voltage to close the solenoid, but will hold it closed if activated by the aux start switch.

What is the actual voltage being output from your alternator? Is it lower than in the past?

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