| Onan 6000 question [message #130674] |
Fri, 17 June 2011 22:18  |
amdgmcman
Messages: 76
Registered: April 2007
Location: Long Beach, CA
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My Onan 6000 will only start and run if I connect the number 9 and 11 connections on the circuit board then jump the solenoid. I was told the reason this is necessary is because the low oil sending unit is bad and that is why it won't start and run like its supposed to. Does that sound right or would a new circuit board do the trick. Any suggestion?
AMDGMCMan
Alan M DeLuccio
78 Royale with
Coachmen,Center Kitchen Floorplan
09 Harley Davidson Street Glide
65 Corvair Monza Convertible
96 RAV4 2 door Manual 4WD
Long Beach, CA
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| Re: Onan 6000 question [message #130690 is a reply to message #130674] |
Sat, 18 June 2011 01:28  |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
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| amdgmcman wrote on Fri, 17 June 2011 20:18 |
My Onan 6000 will only start and run if I connect the number 9 and 11 connections on the circuit board then jump the solenoid. I was told the reason this is necessary is because the low oil sending unit is bad and that is why it won't start and run like its supposed to. Does that sound right or would a new circuit board do the trick. Any suggestion?
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While it is POSSIBLE that the low oil pressure switch could cause these symptoms, it could be the board.
The low oils pressure switch puts a ground on pin 12. If the problem is a bad switch (like you were told...) just disconnecting pin 12 should make the Onan work "normally." (No jumpers required... ) But you should fix the switch... might save your Onan.
If the Onan does NOT work "normally," the board MIGHT be bad... It also checks the AC voltage from the flywheel alternator as a "Onan running signal." If lacking this signal, a "good" board will remove power to the fuel pump and ignition system. Keeps it from the possibility of pouring fuel out the carb or burning the points or ignition module.
Jumping pins 11 to 9 bypasses the fuse... it might be better to use 5 to 9. (Note that 11 to 9 is electrically the same as positive battery post to positive side of the coil.)
IF you are jumping the board to "get by" there is a better way.
Jump the lower pin 6 (not normally used) with pin 9. This jumper can be made from a very short wire and a crimp terminal. It also can be left in place. The start/stop switches on the board will work normally, but there will be NO PROTECTION for oil or if the Onan stops running.... the pump and ignition will still be powered. (Could be a safety or equipment damage issue... just the same as jumping 5 to 9.)
One of my Onan's was jumped 6 to 9, like this when I bought it... it worked so well I did not notice the jumper for a year. I really need to fix it.... I have two good boards on my "less used" Onans.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: Onan 6000 question [message #130691 is a reply to message #130690] |
Sat, 18 June 2011 01:29 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
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sorry -- double post.... 
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
[Updated on: Sat, 18 June 2011 01:30] Report message to a moderator |
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| Re: [GMCnet] Onan 6000 question [message #130741 is a reply to message #130695] |
Sat, 18 June 2011 11:59 |
amdgmcman
Messages: 76
Registered: April 2007
Location: Long Beach, CA
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Thanks for the great info ... where is the oil pressure sending unit located?
AMDGMCMan
Alan M DeLuccio
78 Royale with
Coachmen,Center Kitchen Floorplan
09 Harley Davidson Street Glide
65 Corvair Monza Convertible
96 RAV4 2 door Manual 4WD
Long Beach, CA
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| Re: [GMCnet] Onan 6000 question [message #137557 is a reply to message #130780] |
Fri, 05 August 2011 01:45 |
amdgmcman
Messages: 76
Registered: April 2007
Location: Long Beach, CA
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Hmmmm ... I can't find pin number 12! I'm think I'm going to buy a replacement board then go from there.
AMDGMCMan
Alan M DeLuccio
78 Royale with
Coachmen,Center Kitchen Floorplan
09 Harley Davidson Street Glide
65 Corvair Monza Convertible
96 RAV4 2 door Manual 4WD
Long Beach, CA
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| Re: [GMCnet] Onan 6000 question [message #137579 is a reply to message #137557] |
Fri, 05 August 2011 10:20 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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| amdgmcman wrote on Thu, 04 August 2011 23:45 |
Hmmmm ... I can't find pin number 12! I'm think I'm going to buy a replacement board then go from there.
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Pin 12 is the connection just inboard of the start stop switch, just above the fuse on the oem board.
If there is no/low oil pressure, the switch puts a ground on the wire connected there. If you disconnect it, the board will "think" there is always oil pressure. (Even when there is not....)
A few minutes of trouble-shooting might save you some money... and grief.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: Onan 6000 question ... what did I fry? [message #147216 is a reply to message #130674] |
Thu, 20 October 2011 17:28 |
amdgmcman
Messages: 76
Registered: April 2007
Location: Long Beach, CA
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I went out to jumper the Onan like I explained at the beginning of this post. When I went to connect the clip to the right side of the regulator to jump it, the clip touched the metal plate below it and welded to it. I grabbed a pair of needle nose pliers to pry it loose but the damage was done. What did I fry... the starter?
AMDGMCMan
Alan M DeLuccio
78 Royale with
Coachmen,Center Kitchen Floorplan
09 Harley Davidson Street Glide
65 Corvair Monza Convertible
96 RAV4 2 door Manual 4WD
Long Beach, CA
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