Forum Discussion
JaxDad
Sep 30, 2017Explorer III
Start with the very basics.
Get a voltmeter. If the chassis battery is dead, replace it. Disconnect the house batteries and see what the chassis battery reads before and after starting the engine. If the alternator is working, it will run fine to get where he needs to be.
After that start diagnosing the house battery issue.
It's likely that with three dead batteries the alternator at idle just can't keep the voltage high enough to sustain the engine. Disconnected house batteries will fix that.
Get a voltmeter. If the chassis battery is dead, replace it. Disconnect the house batteries and see what the chassis battery reads before and after starting the engine. If the alternator is working, it will run fine to get where he needs to be.
After that start diagnosing the house battery issue.
It's likely that with three dead batteries the alternator at idle just can't keep the voltage high enough to sustain the engine. Disconnected house batteries will fix that.
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