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Old 06-13-2024, 03:10 AM   #1
Junior Member
Brand: Thor Motor Coach
State: Michigan
Posts: 9
THOR #32089
2015 Axis 25.1 Genny?

Onan 4000 - Ok I am lost with this one? Need expert advice?!? Generator runs good stationary, no issues at all for hours on end even with A/C and microwave running together. So far I’ve changed the oil (good level), spark plug, air filter, fuel filter, and a brand new carburetor. The only thing that is not new is the fuel pump on the genny. However when I am on the way (road) with a full tank of gas the genny will trip and I loose power for A/C and microwave??? But the genny is still running! Is there a speed limit that once you hit certain limit (55mph)the genny gets tripped?

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Old 06-13-2024, 04:15 AM   #2
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16ACE27's Avatar
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 15,233
THOR #7035
Define "tripped".

Is the generator output breaker tripping?

There is no relationship between coach traveling and generator running.
Ted & Melinda
2016 ACE 27.1
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B BU TOAD
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Old 06-13-2024, 12:09 PM   #3
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Brand: Thor Motor Coach
Model: Miramar 37.1
State: California
Posts: 2,562
THOR #12698
If it is the breaker tripping while driving, you might want to look at the electrical connections to be sure they are tight in/around the generator. One loose one can cause it to trip the breaker. Sitting still with nothing moving around and then driving with everything moving sounds like a loose connection.

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Old 06-18-2024, 10:55 PM   #4
Brand: Thor Motor Coach
Model: Ace 30.1
State: Pennsylvania
Posts: 89
THOR #30029
Check the connection box next to the gen under the coach. Grey plastic box, wired to gen. Mine broke off the mounts and was swinging like a monkey. Connections inside were all loose from banging g around.

2015 ace 30.1
George Pal
2015 Thor ACE 30.1
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