Onan Q4000 genset problem

Rich Biebel · 04-15-2014, 12:15 PM

Jim if you push the button to stop once when it is still flashing 3 times, you should see a second fault code. Probably a series of two seperate blinks. If you can tell me what that is, I can give you more info. How many hours are on the machine?

Jim Wahl · 04-15-2014, 06:35 PM

Quote:

Originally Posted by Rich Biebel

Jim if you push the button to stop once when it is still flashing 3 times, you should see a second fault code. Probably a series of two seperate blinks. If you can tell me what that is, I can give you more info. How many hours are on the machine?

Rich, the code it gives me is 32. that doesn't make sense according to my manual. That code is shown as a "low cranking speed fault", but it's not cranking slowly.
My unit has 839 hours on it. Jim

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Rich Biebel · 04-15-2014, 07:19 PM

Jim check your message inbox....

MacNicol Racing · 04-16-2014, 11:59 AM

Jim, I had a similar problem with mine years ago. I don't recall if it was the same code as you are getting though. Mine ended up being the circuit board. Replaced it and it started right up.

Jim Wahl · 04-17-2014, 09:26 PM

Thanks Mac. Rich, I answered you, did you get it? Jim

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Rich Biebel · 04-18-2014, 07:16 AM

I did Jim but emptied my messages and it must have not been sent to you.

Warrantee is 2 years on a 4KY in an RV
The Motorhome builder would refer you to Cummins-Onan for repairs

There is no quick fix and you need to take it to someone who is capable of diagnosing it and repairing it. A Cummins-Onan Authorized shop if it is under warrantee. Or someone with the knowledge and experience that is familiar with Onan's. The machine may have to be removed from the MH to be repaired.

Jim Wahl · 04-18-2014, 11:53 AM

Thank you Rich. Jim

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04-15-2014, 12:15 PM	#1
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,320 Likes: 25 Liked 557 Times in 217 Posts	Re: Onan Q4000 genset problem Jim if you push the button to stop once when it is still flashing 3 times, you should see a second fault code. Probably a series of two seperate blinks. If you can tell me what that is, I can give you more info. How many hours are on the machine? __________________ Rich Biebel S/C 1479 Stock 147R

04-15-2014, 07:19 PM	#3
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,320 Likes: 25 Liked 557 Times in 217 Posts	Re: Onan Q4000 genset problem Jim check your message inbox.... __________________ Rich Biebel S/C 1479 Stock 147R

04-16-2014, 11:59 AM	#4
MacNicol Racing Junior Member Join Date: Nov 2007 Location: North Port, Fl Posts: 58 Likes: 49 Liked 11 Times in 6 Posts	Re: Onan Q4000 genset problem Jim, I had a similar problem with mine years ago. I don't recall if it was the same code as you are getting though. Mine ended up being the circuit board. Replaced it and it started right up. __________________ Kevin MacNicol 2120 STK & S/ST

04-17-2014, 09:26 PM	#5
Jim Wahl Veteran Member Join Date: Jan 2002 Location: Central Florida Posts: 5,845 Likes: 672 Liked 683 Times in 129 Posts	Re: Onan Q4000 genset problem Thanks Mac. Rich, I answered you, did you get it? Jim . __________________ Jim Wahl....NHRA #2239 S/SS - IHRA # 8 Stock, D2 Stock Champion (forever I guess) 2019 Baby Gators Stock Champion 2009 NHRA D2 National Open Stock Champion 1982 NHRA D2 West Palm Beach LDRS SS Runner Up Past President, Southern Stock / Super Stock Association.

04-18-2014, 07:16 AM	#6
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,320 Likes: 25 Liked 557 Times in 217 Posts	Re: Onan Q4000 genset problem I did Jim but emptied my messages and it must have not been sent to you. Warrantee is 2 years on a 4KY in an RV The Motorhome builder would refer you to Cummins-Onan for repairs There is no quick fix and you need to take it to someone who is capable of diagnosing it and repairing it. A Cummins-Onan Authorized shop if it is under warrantee. Or someone with the knowledge and experience that is familiar with Onan's. The machine may have to be removed from the MH to be repaired. __________________ Rich Biebel S/C 1479 Stock 147R

04-18-2014, 11:53 AM	#7
Jim Wahl Veteran Member Join Date: Jan 2002 Location: Central Florida Posts: 5,845 Likes: 672 Liked 683 Times in 129 Posts	Re: Onan Q4000 genset problem Thank you Rich. Jim . __________________ Jim Wahl....NHRA #2239 S/SS - IHRA # 8 Stock, D2 Stock Champion (forever I guess) 2019 Baby Gators Stock Champion 2009 NHRA D2 National Open Stock Champion 1982 NHRA D2 West Palm Beach LDRS SS Runner Up Past President, Southern Stock / Super Stock Association.