Forum Discussion

bluebarry1964b's avatar
bluebarry1964b
Explorer
May 25, 2016

Generator won't start unless RV engine has been started

Hi guys; Getting ready for another trip; this one about 4600 miles in total. Noticed that the last couple of times I was at the RV (2003 Holiday Rambler Neptune) the Onan diesel generator wouldn't ...
Class A
2oldman's avatar
2oldman
Explorer II
May 25, 2016
It seems likely your generator starts via the house batteries. A simple voltmeter check will tell you this. It's also likely the house batteries are shot. Again, voltmeter.

About Motorhome Group

38,773 PostsLatest Activity: Apr 22, 2026