Onan Q4000 genset problem

Jim Wahl · 04-15-2014, 11:38 AM

OK so it was humming away with no problems on Friday at the race when it just shut off. Wouldn't restart. Let it cool off. Nothing. It will turn over and start and run until you take your finger off of the outside manual start button. Anybody got any ideas?

It is a 2011 Onan Q4000 with the flashing light trouble signal on the outside start button but the only code that gives is the "service" three blink code. ??? Jim

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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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04-15-2014, 11:38 AM	#1
Jim Wahl Veteran Member Join Date: Jan 2002 Location: Central Florida Posts: 5,844 Likes: 667 Liked 683 Times in 129 Posts	Onan Q4000 genset problem OK so it was humming away with no problems on Friday at the race when it just shut off. Wouldn't restart. Let it cool off. Nothing. It will turn over and start and run until you take your finger off of the outside manual start button. Anybody got any ideas? It is a 2011 Onan Q4000 with the flashing light trouble signal on the outside start button but the only code that gives is the "service" three blink code. ??? 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.

04-15-2014, 12:15 PM	#2
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,314 Likes: 25 Liked 544 Times in 213 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	#4
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,314 Likes: 25 Liked 544 Times in 213 Posts	Re: Onan Q4000 genset problem Jim check your message inbox.... __________________ Rich Biebel S/C 1479 Stock 147R

04-16-2014, 11:59 AM	#5
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	#6
Jim Wahl Veteran Member Join Date: Jan 2002 Location: Central Florida Posts: 5,844 Likes: 667 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.