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 > Your search for posts made by 'JSS1439' found 25 matches.

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RE: Cummins Onan Generator running ruff at start up

Hi Scott, I have a little 2.8 that does the same thing sometimes, I am waiting for one of the Onan Guru guys to answer your question so it will help me. Really... Are you getting the same 37 code also?
JSS1439 07/29/14 04:53pm Tech Issues
RE: Cummins Onan Generator running ruff at start up

Was just looking at the service manual and wondering if it could be the automatic choke out of adjustment. Which would possibly explain why it runs so good once it warms up a little. Thoughts?
JSS1439 07/29/14 04:08pm Tech Issues
Cummins Onan Generator running ruff at start up

Hi all, I have a Cummins Onan 5500 generator model HGJAB Spec E that on start up runs very ruff and smokes like crazy. It will stall out and give a 37 code about 3-4 times before eventually smoothing out and running all day long like nothing is wrong after about the 5th start up. It acts like too much gas is getting dumped into the carb at start up for some reason and I'm not even priming it. Any ideas what could be causing this? It only has 170 hours on it and I've already ran Sea Foam through it. Thanks for your time, Scott
JSS1439 07/29/14 12:07pm Tech Issues
RE: No generator power when running but shore power is fine.

No it was off lol. Yes I turned everything back off again as advised and tightened all the connections along with the 4 connectors that plug into each corner of the electrical board. Powered back up and switched from shore power to genny power a couple times and it seams to be happy now. Thanks again for all the advise, this forum is awesome. If there are any other concerns you may have that I need to look at, Please advise.
JSS1439 05/31/14 12:25pm Tech Issues
RE: No generator power when running but shore power is fine.

OK I located the ATS and move the wires around a bit on the electrical board. Went back inside and lights were on, turned on the AC and everything seems to be OK now. HMMM I guess the contacts on the electrical board were dirty. Thanks so much to all who replied. I'm gonna call the dealer and see what they say about this.
JSS1439 05/31/14 08:26am Tech Issues
RE: No generator power when running but shore power is fine.

When running the gen set is there 110 V power to all the other outlets or is there just no power to the convertor. In other words does the microwave and television work? according to your post you only mention only that the converter does not work from the genset. Your answer might bring other solutions, please reply. Correct, I'm not getting any power to AC, TV, microwave, outlets or lights that normally would come on when using the generator.
JSS1439 05/31/14 07:42am Tech Issues
RE: No generator power when running but shore power is fine.

Could be the ATS, but start by turning off and then back on the two on-generator breakers. Yes thanks. I already did that to those and to the one on the converter.
JSS1439 05/30/14 08:42pm Tech Issues
RE: No generator power when running but shore power is fine.

Could be just about anywhere........kinda like a scavenger hunt :B In my 5th wheel it was behind a false wall in basement compartment. Look for a removable panel rearward wall in basement compartment. Could be directly behind AC Dist panel. Just not sure. Call Keystone if you don't find it Phone (toll free): (866) 425-4369 Ok great info. I'll go take a look and see if I can find it. Thanks so much!
JSS1439 05/30/14 08:32pm Tech Issues
RE: No generator power when running but shore power is fine.

There is a transfer switch (electrical box) where the shore power cords goes in, generator power cord goes in and then power cord comes out going to main dist. panel. When one of the power in is hot the ATS swaps and allows power out. You get power just fine on shore but not on gen. ATS is stuck on shore side. Bad relays. bad contacts. Ok thanks, now I'm getting it. Is it possible you can tell me where to locate this switch?
JSS1439 05/30/14 08:15pm Tech Issues
RE: No generator power when running but shore power is fine.

Bill was referring to the ATS - Automatic Transfer Switch, just one point of failure. Had the RV since new and never had to manually switch over. I always just started the generator and everything automatically switched over.
JSS1439 05/30/14 07:40pm Tech Issues
RE: No generator power when running but shore power is fine.

Hey all, I have a Keystone Fuzion 310 toy Hauler with a Cummins Onan 5500 Built in generator. When I fire up the generator, the converter doesn't kick in but yet when I plug it up to shore power, the converter kicks in and everything is fine. I checked the circuit breaker on the converter and it has not been tripped. I also checked both breakers on the genny and they were not tripped either. Is there a fuse somewhere I can check that may be blown? Any suggestions are appreciated. Thanks for your time, Scott What about the transfer switch? If no automatic transfer switch there would be some manual device you would need to select. Has it ever worked? If not, do you need to manually plug your coach into the inverter? A switch you need to select? No switch it's automatic. It's a 2012 Fuzion and when you start the genny the converter always kicked in automatically.
JSS1439 05/30/14 07:13pm Tech Issues
No generator power when running but shore power is fine.

Hey all, I have a Keystone Fuzion 310 toy Hauler with a Cummins Onan 5500 Built in generator. When I fire up the generator, the converter doesn't kick in but yet when I plug it up to shore power, the converter kicks in and everything is fine. I checked the circuit breaker on the converter and it has not been tripped. I also checked both breakers on the genny and they were not tripped either. Is there a fuse somewhere I can check that may be blown? Any suggestions are appreciated. Thanks for your time, Scott
JSS1439 05/30/14 06:19pm Tech Issues
RE: Cummins Onan 5500 question

I also suspect a clogged idle jet- I would run some Seafoam through it. What happens is the throttle closes, but the idle jet doesn't provide enough fuel, so it opens up, but the main jet provides too much..... Yes. IIRC, the idle jet is under a cap, so getting there is tricky. I drilled into my cap and put a screw into the hole to pull the cap off. I don't have experience with the carb in the HGJAB 5500, however. Ok. Thanks for the edits. Got'em.
JSS1439 09/27/13 07:23am Tech Issues
RE: Cummins Onan 5500 question

I also suspect a clogged idle jet- I would run some Seafoam through it. What happens is the throttle closes, but the idle jet doesn't provide enough fuel, so it opens up, but the main jet provides too much..... Thanks Chris, That's something else I was planning to do today. Run a couple gallons of fresh gas with Seafoam. I generally use Sta-Bil but seems people prefer Seafoam today.
JSS1439 09/27/13 07:20am Tech Issues
RE: Cummins Onan 5500 question

There are different spec letters for the same gens. Look at your model number which starts with HGJAB so and so the spec letter is at the end of those letters and numbers on your data tag. It tells you which parts or manuals you need. Ok thanks. That spec letter is E
JSS1439 09/27/13 07:12am Tech Issues
RE: Cummins Onan 5500 question

Hey DryCamper11, I adjusted that governor spring in both directions 3 notches and couldn't tell a difference. Any other suggestions that may help the "hunting" at low loads? If it made no difference - set it back to where it was, then go through the troubleshooting section of the manual. I've got two Onans with the manual governor and one step in the setup is to adjust the position of that spring to increase sensitivity until it begins to hunt, then back it off until hunting stops. I find that hunting occurs most often at low power levels, and over the time, as the gen ages, I occasionally have to readjust it by moving it towards the end (away from the pivot shaft). That reduces sensitivity and decreases the tendency to hunt. You can try moving the spring all the way to the far end to see if it stops hunting (just as a test), but that shouldn't be necessary in normal use. If it's not a hunting problem, make sure you've disconnected all loads. I once saw a problem that looked like hunting, but it turned out to be a load that would start up, the gen would go full throttle trying to power that load, but before the gen could stabilize, the device would decide the voltage was too low and would shut off, so the gen would go back to idle. The cycle would repeat. A microwave on partial power can make the gen do this, too, as the microwave cycles on/off to limit power. OK good info. Thanks again for your help, I'll play with the spring some more and see if it improves.
JSS1439 09/27/13 07:10am Tech Issues
RE: Cummins Onan 5500 question

Hey DryCamper11, I adjusted that governor spring in both directions 3 notches and couldn't tell a difference. Any other suggestions that may help the "hunting" at low loads?
JSS1439 09/26/13 04:15pm Tech Issues
RE: Cummins Onan 5500 question

I suspect gas sitting too long in the carb and gumming it up. There is this stuff called mechanic in a bottle that will fix that. I put Sta-bil in my gas.
JSS1439 09/26/13 04:11pm Tech Issues
RE: Cummins Onan 5500 question

No service faults at all. It never stops running, just throttles up and down but smooths out when a load is put on it. Check the frequency and voltage. I love my Kill A Watt for that at $20. You are experiencing "hunting." I get it with my Onan 6500. Here's the manual: http://www.cumminsonan.com/www/pdf/manuals/983-0501D.pdfhttp://www.cumminsonan.com/www/pdf/manuals/983-0501D.pdf On page 8-20 you can see the governor. You want to move the spring a bit farther (one notch will probably do it) from the centrifugal shaft to reduce hunting. Haha I was just outside running it and was looking at that spring thinking about adjusting it. I thought I better ask before moving it. I'll do that and let you know if it helps. Thanks DryCamper11
JSS1439 09/26/13 03:13pm Tech Issues
RE: Cummins Onan 5500 question

Do you see any service fault codes? There are dozens of them. The HGJAB 5500 provides extensive diagnostics by causing the status indicator light on the Control Switch to blink in coded fashion. Following a fault shutdown, the indicator light will repeatedly blink 2, 3 or 4 blinks at a time. • Two blinks indicates a low oil pressure fault. • Three blinks indicates a service fault. Press Stop once to cause the two-digit, second-level fault code to blink. (Pressing Stop again will stop the blinking.)The two-digit code consists of 1, 2, 3, 4 or 5 blinks, a brief pause, and then 1 to 9 blinks. The first set of blinks represents the tens digit and the second set of blinks the units digit of the fault code number. • Four blinks indicates that cranking exceeded 30 seconds without the engine starting. No service faults at all. It never stops running, just throttles up and down but smooths out when a load is put on it.
JSS1439 09/26/13 02:40pm Tech Issues
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