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Old 05-23-2019, 05:21 PM   #1
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Default LP 2500 Generator- Cummins Onan

Less than 46 hours and my generator died....at Cummins dealership right now.... they don't have a clue why it won't start and run... WTF.

Just 8 months ago.. I paid them $1,150 for a new rotor and voltage regulator....

Now, I'm looking at a brand new replacement... I don't see any point in throwing good money after bad.....at least the new one will have a 3 years warranty....

They're still looking at the possibility of fixing the old one and spending countless hours , on their nickel, trying to figure out what happened.... they're curious on how this happened..? Maybe it will be something really stupid?
They checked all the usual suspects and found nothing, fuel, electrical, etc..... They are waiting and ordered a special diagnostics tool......

Am I crazy not to just replace it??? What do you think?

Or.... maybe it's just not worth doing??
Pros and cons.... If I don't replace it, I would have to plug in for power everywhere??!?

Dilemma 😡😡😡
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Old 05-23-2019, 05:41 PM   #2
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If I don't replace it, I would have to plug in for power everywhere??!?
That depends on how much electric power you use while parked.

About the only times my genny is run is if I hit the battery up hard overnight for heat and it's gonna be cloudy out or the microwave and occasionally to run the AC for a bit to remove the heat soak from driving. But I do have 150 watts of solar. 75% of my camping is boondocking for days at a time, most all of the rest is driveway camping, with electric.

Only 46 hours on an Onan in how many years? It should be run with at least half of a load 1 to 2 hours/month, according to their manual.
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Old 05-23-2019, 06:01 PM   #3
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Default I know.... read more below....

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That depends on how much electric power you use while parked.

About the only times my genny is run is if I hit the battery up hard overnight for heat and it's gonna be cloudy out or the microwave and occasionally to run the AC for a bit to remove the heat soak from driving. But I do have 150 watts of solar. 75% of my camping is boondocking for days at a time, most all of the rest is driveway camping, with electric.

Only 46 hours on an Onan in how many years? It should be run with at least half of a load 1 to 2 hours/month, according to their manual.
I purchased my RV two years ago...had 11 hours on my generator.. previous owners just plugged in everywhere....

We've used it and after fixing the rotor and voltage regulator, yes, I exercised it as you pointed out....then, when I went to use it ... this failure occurred.

The dilemma of whether or not it would be viewed as a "negative" when I went to sell it later??

Plus, the hassle of not having power for my own use ...

We do have a 160 watt solar panel.... mainly keeps our house batteries charged... Not enough for the A/C or microwave convection oven.....😡
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Old 05-23-2019, 07:16 PM   #4
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Originally Posted by Roadtrek Adventuous RS1 View Post
I purchased my RV two years ago...had 11 hours on my generator.. previous owners just plugged in everywhere....

We've used it and after fixing the rotor and voltage regulator, yes, I exercised it as you pointed out....then, when I went to use it ... this failure occurred.

The dilemma of whether or not it would be viewed as a "negative" when I went to sell it later??

Plus, the hassle of not having power for my own use ...

We do have a 160 watt solar panel.... mainly keeps our house batteries charged... Not enough for the A/C or microwave convection oven.....😡
Bummer. Good luck.
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Old 05-23-2019, 07:17 PM   #5
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Bummer. Good luck.
Steve, so..... would you replace it with a new one? Tell me that is not a crazy idea.
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Old 05-23-2019, 07:58 PM   #6
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Steve, so..... would you replace it with a new one? Tell me that is not a crazy idea.
I did replace mine, but not with an Onan.


Two big trips in a row the Onan failed.

Strike one:
First time, fuel pump. I re-engineered an after market pump to the outside of the genny.

Strike two:
The regulator failed. This had been a neglected genny, it was on it's third carburetor with only 150 hours on it, from previous owner. I replaced regulator, found the brush ring at the high end for resistance. I didassembled the genny to clean this up. I also replaced a bad ($$$)muffler.

Strike three:
The carburetor was messed up from having to sit without being able to run it for too long. (It had failed a few days into the second three month trip).

Three strikes was enough for me.

95% of the time I have a trailer in tow behind me with a motorcycle in it. I obtained a nice, quiet, and sofar, reliable Champion genny with a key fob for remote start. They run about $800 and are much quieter than that POS Onan ever thought of being. The only hassle, and it's not insignificant, is fueling it. But remember that re-engineered fuel pump for the Onan? I simply wired up a trailer light connector to it for power and picked up enough fuel line to run to the genny that I keep coiled up in the rear storage compartment on the Versatile 200. I also installed a small ball valve toward the end of it and insert a plug to minimize the possibility of a gas leak.

To fill the genny, I extend the fuel hose, plug in the connector, turn on the parking lights then open the ball valve. Yes it's a bit of a hassle but that Onan was a huge hassle, what with the breakdowns. I had almost as much in parts in that Onan as I spent on a new genny with U.S. based support and a wide dealer network. I've had it for about a year and a half or two and it has been trouble free.

Maintenance on this genny is a whole lot easier to access.

I do shut off the fuel and run it dry before I move somewhere else.

I did mount it to one of those receiver hitch carriers for one kinda short trip. It takes about fifteen minutes to move from the trailer to that carrier and strap it down. I can barely hear the genny run with the A/C on and I have the luxury to unhook the trailer and be up to 50' feet from it, but there really is no need. The key fob has an alleged range of "up to" 80'.

As a bonus to all this, the area where the Onan was has been re-purposed as a battery carrier. Room for a lot more battery capacity should I find the need.

The old Onan is currently in Minnesota at a brother's house. He and another brother also own older Roadtreks and still have their(problematic) Onan gennies. The Onan will remain there to be cannibalized as required.


Summing up, yes, there are trade offs but I am glad I went the direction that I did.
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Old 05-23-2019, 08:53 PM   #7
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I would replace it. So convenient. I had many Onans on various RV’s and never had a problem. I maintain and exercise them regularly.
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Old 05-23-2019, 10:12 PM   #8
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Default That was a gasoline generator?

Quote:
Originally Posted by SteveJ View Post
I did replace mine, but not with an Onan.


Two big trips in a row the Onan failed.

Strike one:
First time, fuel pump. I re-engineered an after market pump to the outside of the genny.

Strike two:
The regulator failed. This had been a neglected genny, it was on it's third carburetor with only 150 hours on it, from previous owner. I replaced regulator, found the brush ring at the high end for resistance. I didassembled the genny to clean this up. I also replaced a bad ($$$)muffler.

Strike three:
The carburetor was messed up from having to sit without being able to run it for too long. (It had failed a few days into the second three month trip).

Three strikes was enough for me.

95% of the time I have a trailer in tow behind me with a motorcycle in it. I obtained a nice, quiet, and sofar, reliable Champion genny with a key fob for remote start. They run about $800 and are much quieter than that POS Onan ever thought of being. The only hassle, and it's not insignificant, is fueling it. But remember that re-engineered fuel pump for the Onan? I simply wired up a trailer light connector to it for power and picked up enough fuel line to run to the genny that I keep coiled up in the rear storage compartment on the Versatile 200. I also installed a small ball valve toward the end of it and insert a plug to minimize the possibility of a gas leak.

To fill the genny, I extend the fuel hose, plug in the connector, turn on the parking lights then open the ball valve. Yes it's a bit of a hassle but that Onan was a huge hassle, what with the breakdowns. I had almost as much in parts in that Onan as I spent on a new genny with U.S. based support and a wide dealer network. I've had it for about a year and a half or two and it has been trouble free.

Maintenance on this genny is a whole lot easier to access.

I do shut off the fuel and run it dry before I move somewhere else.

I did mount it to one of those receiver hitch carriers for one kinda short trip. It takes about fifteen minutes to move from the trailer to that carrier and strap it down. I can barely hear the genny run with the A/C on and I have the luxury to unhook the trailer and be up to 50' feet from it, but there really is no need. The key fob has an alleged range of "up to" 80'.

As a bonus to all this, the area where the Onan was has been re-purposed as a battery carrier. Room for a lot more battery capacity should I find the need.

The old Onan is currently in Minnesota at a brother's house. He and another brother also own older Roadtreks and still have their(problematic) Onan gennies. The Onan will remain there to be cannibalized as required.


Summing up, yes, there are trade offs but I am glad I went the direction that I did.
This was a gas generator, correct???
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Old 05-23-2019, 10:14 PM   #9
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Default Propane generator???

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Originally Posted by Kab449 View Post
I would replace it. So convenient. I had many Onans on various RV’s and never had a problem. I maintain and exercise them regularly.
OK, thanks. SO...this was a propane generator ???
Sounds like you were very lucky.... that's great.

Exercised them about 2 hours per month?
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Old 05-23-2019, 11:00 PM   #10
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This was a gas generator, correct???
Yup. Obviously with your LP unit you have one less potential problem.

LP kits are available for "after market" gennies but could prove problematic to install.
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