Generac GP8000E COsense Bypass guide - Fix it - Make it run again

Generac GP8000E with a bad COsense sensor. Watch to figure out out to bypass it. Fix it, don't replace it.
The Small Engine Repair Guy
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[@virgiltoepfer7087]

Good job sir.

[@Bobred1965]

I knew Cosense would be a problem. I bought my Generac 8000 2 years ago and got one without Cosense.

[@Sheethausfab]

My GP6500 co sense board was fried Unplugged it the generator runs, gonna bypass it tomorrow Great info thanks!

[@philliphall5198]

Thank You very much 😊

[@bobmarwood4232]

Thanks for a great vid! Just followed your instructions for my GP 9200E. I peeled the sticker off without cutting and it was still sticky enough to reapply.

[@thesmallenginerepairguy]

Great. If I ever see another one of these I will try that.

[@PNWMTHOOD]

Thank you this video helped, have a new gp9200E with 5.5 hrs, i only run non ethanol fuel but still checked the carb it was spotless, this video is exactly what mine was doing, just did the bypass it runs perfectly again.

[@thesmallenginerepairguy]

Awesome! Great job!

[@jefflanham1080]

Should have been a recall!!! My almost new one did the same thing….

[@lynnmason6020]

T25 nuts torx nuts will remove. Good fix, smart to remove only part of sticker. Test output of gen prior to this hack, rotor stator problems will shut down gen in 10 seconds also. Sometimes a field flash is all they need.

[@philliphall5198]

No one will warranty them Crazy crap they make now 😊

[@thesmallenginerepairguy]

Yea, I've been hearing that Generac isn't covering certain equipment, depending where it's purchased. Just what I've heard, not my experience. Glad this helped.

[@bobmarwood4232]

Yes, that's right. Before I fixed my new GP9200E myself I called Generac to find out where I could get it fixed under warranty. Out of four shops they recommended two wouldn't work on Generac ( one was an ex Generac dealer) another would work on it for $80 an hour and the last are well known hacks in Woodstock Ct. that I refuse to patronize. Wish I bought something else.

[@philliphall5198]

The HF gen are having the same problem with sensor,c02 one bad Going to bypass them on all the units I can Stupid dam epa

[@Honestandtruth007]

The Generac Old models never have this problem. The NEW models with COSence is A Possible cause. That's Why I avoided Generac now

[@mikehamilton5927]

What size is the screw that holds the co2 sensor to the front panel?

[@stevenpidek4387]

What do you recommend for a portable back generator for the house . What brand is good.

[@thesmallenginerepairguy]

Hard to make a recommendation without a budget in mind. If I was buying one, I probably buy a higher end predator generator from Harbor Freight. With that said, I don't have experience with them because I don't see them in the shop... which is a good sign. Good luck.

[@Mr.Weatherspoon]

But you never addressed if you can still use the starter, after doing the jumper ordeal?

[@thesmallenginerepairguy]

Yes the starter will still work with this jumped.

[@propellaheadimages]

Followed your steps and it works. Had to use a drill in reverse to get it to make power. Now once the generator is shut off and I restart it there is no power. I have to use the drill again. Any thoughts? Thanks

[@thesmallenginerepairguy]

That's a tough one. Check the rotor brushes. They should be clean and bright brass color.

[@hammerdown3000]

Great video, that feature should be called Co Nonsense. Have you ever dealt with CGFI issues. My Generac GP8000E has a problem with one 120v receptacle. The CGFI will jump within a few seconds of turning it on, nothing connected to the generator. The other 120v receptacle works fine and the 240 work fine. Any ideas?

[@thesmallenginerepairguy]

I would try replacing the GFCI outlet. Start with the cheapest part first.

[@hammerdown3000]

Thanks for the reply, I will have to see how hard it is to take that front panel off and change that receptacle out. I was hoping to find a instructional video on that. Thanks again for your great videos.

[@mazensholakh9529]

Was having the same issue. Tried the bypass, but now I have no ac power. Does the red wire need to be plugged into that co sense ??

[@thesmallenginerepairguy]

I am not 100% sure. I did not test the output while I had it unplugged. I would try plugging the cosence back in.

[@philliphall5198]

If you have this system go ahead and bypass it now, because it will fail

[@rosemoore8397]

I did what you did and now generator not making power

[@thesmallenginerepairguy]

Check all of your connections

[@wmMustafa]

😂😂😂

[@ericnewton5720]

I’m having an issue with my duromax co sensor. It shuts down in open air in 4 minutes. Grrr

[@thesmallenginerepairguy]

Bummer. Hope you can figure it out.

[@braininavatnow9197]

Two weeks later the customer died from CO poisoning.☠️😫 Don't run your generator in your outhouse to keep warm if you are constipated unless the CO shutoff circuit is working.

[@thesmallenginerepairguy]

Running your generator outdoors and not indoors should be common sense. Thanks for the PSA.