Good Sam Club Open Roads Forum: Onan Micro 4000 Generator Won't Start
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 > Onan Micro 4000 Generator Won't Start

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txnese

Pearland

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Posted: 07/11/18 09:43am Link  |  Quote  |  Print  |  Notify Moderator

After tracing down the correct starter power wire. I found that it's mounted to the input side of the first solenoid, on top of the battery feed. So it doesn't actually go through the first solenoid (near the battery.) After inspecting the power wire and terminals, I came to the conclusion that it's good. With jumper cables directly from battery terminals to starter solenoid and generator itself (ground), it fires right up. I then removed just the power side of the cables and still good. I reinstalled the power cable and removed the jumper ground and no good. Bad ground right? Yep. I traced down the ground and found that there are 2 ground cables. 1 from house chassis to generator housing, and a second from the generator housing to the generator itself (control module had to be removed to see it). It's the second cable that was loose, so it showed me 12 volts when testing with voltmeter, but not enough to start it. Thank you everyone for your inputs.

* This post was edited 07/11/18 06:41pm by txnese *

Mich F

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Posted: 07/11/18 09:54am Link  |  Quote  |  Print  |  Notify Moderator

Glad you found your problem and posted what it was.


2014 Itasca Spirit 31K Class C
2016 Mazda CX5 on Acme tow dolly- 4 trips ~ 5,800 mi
Now 2017 RWD F150 with a drive shaft disconnect

Sam Spade

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Posted: 07/11/18 11:46am Link  |  Quote  |  Print  |  Notify Moderator

txnese wrote:

There is a voltage drop on the solenoid output side as well as input side, but the battery itself stays at 12v. With a jumper box directly on the input side of the solenoid, the generator fires right up.


Proof positive that you have a bad connection somewhere between the battery and the input post on the solenoid.....or a bad cable.

I see that you found the problem.
Good work.


'07 Damon Outlaw 3611
CanAm Spyder in the "trunk"

youracman

Denver, CO

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Posted: 07/11/18 01:44pm Link  |  Quote  |  Print  |  Notify Moderator

Mich F wrote:

Glad you found your problem and posted what it was.


^^^^^^^ Same Here ^^^^^^

Thanks for posting back. ed s


Ed Sievers, Denver, CO
07 WGO Outlook 31-C; '16 Kia Soul with 6spd DIY Tranny
"Be the person you needed when you were younger"


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