Predator 3500 CO sensor bypass

[@toml7445]

Mine was shutting off every 15 to 30 minutes. I saw another video with a similar work around that didn't work. I tried this bypass and my generator works perfectly now. Thanks for the tip.

[@donitmyself8935]

I've been looking for this information since winter freezing my ass off restarting this damb thing every ten mins while i'm trying to sleep in my semi truck. I found this video last month and it took me a week or so to get the parts together and take the generater apart. Thank you so much for showing in detail how to do this. I can run a whole tank of fuel without resarting my generater now. FYI the scews to remove the side cover are on the right side of the front panle and the left side of the rear panle also some on the bottem of the side panle. This is the only part missing for your video.

[@Bluntask]

Just wanted to thank you for a quick and simple work around. Broke at a bad time and I simply put in a jumper wire and taped it up. Perfect ;)

[@danrasta44]

Bought one, had the same issue. Returned thinking I just got a “lemon”. Second one lasted 2 hours-I went to lunch, came back, it fired up for 10 seconds and started shutting off because of the sensor again. I’m going to do the bypass this morning. Thank you for the video 👌🏽

[@clearrng69]

I run two of these Generators Together on a food truck. Had to replace one of them, so it had the Co sensor. I had to bypass the sensor immediately. This hack worked great. I really appreciate you posting this.

[@bendingjeeps]

Glad it helped!

[@JohnBrodt]

It's videos like this that keep the world moving forward. Thank you Big Blue Hauler

[@michaelarmstrong8694]

Thanks for making this video. We live off this generator and this video saved my butt on Christmas morning.

[@JacobDuke-m1q]

I bypassed mine as well to “check” the sensor. Worked great! Thanks for the advice.

[@wal18091]

I used mine on the island for the first time Friday night. Same problem. Thanks for posting this up, saved me from a return the HF.

[@bendingjeeps]

Glad I could help!

[@CharlieSalevsky]

For what it's worth, I just unplugged mine from the backside of the interface panel and it's worked great ever since. I run a mobile business with this generator in a pick up bed under a bed cap and it's never tripped the CO sensor since unplugging it.

[@scottr3764]

Confirmed. On my 2022, I just unplugged it from the sensor also and it worked!

[@Detail.Excellence]

Hey Man, just got this generator weeks ago and also run a mobile business. What do you mean by backside interface panel? Hoping i can do the same without doing all this wiring.

[@ronmoore3987]

Great idea brother, I will try that next before I go cutting splice wires.Sure do appreciate your post man Merry Christmas to ya....

[@startingtech3900]

Thanks man gonna give it a shot

[@dr.jerrygustafson7680]

When I unplugged the CO sensor, the generator only ran 18 seconds. The bypass didn't work on my brand new 3500. So I undid the bypass and thoroughly covered the sniffer holes on the CO sensor with electrical tape and now it works great!

[@jefffrayer8238]

Thankfully I bought my 3500's in 2020 before an engine change and co sensor hassle. Just bought the Predator 2000 inverter but haven't started it yet. Same as the 3500's I'm putting in the NGK plug, small gas filter, and trying to do the co delete for obvious reasons. They have now molded 8 wires from 2 cables into that co sensor. 2 browns, a black and white from one cable. A red, green, yellow, blue on the other cable. Trying to study to figure out which wires to connect. They are trying to make it harder to bypass. Your vid is the best but wrong Inverter for me. Greetings from the farm near Battle Creek, Mi.

[@mikehanlon9773]

I was told the new generation can't be bypassed 😮

[@rvdrifter8514]

My gen only had 9 hours on it when the yellow light was flashing. Bad CO sensor. Thanks for the work around. Worked great

[@theAlienpirate]

Finally, someone who showed their work, also this is the newer style with the battery door on the front left side. "Many Thanks" 💯

[@bendingjeeps]

Glad to help. My sensor was way over sensitive.

[@TheMillwright1980]

This worked on my Predator 9000 also. The only difference was that your brown wire was orange on my harness. So I did Orange to Black and Green to White. Thank you for this!!

[@vincerose1985]

Would you mind telling me where it is on the 9000? I think I found it but I'd like to confirm.

[@TheMillwright1980]

@vincerose1985 I don't have it in front of me but I believe if you are looking at the control panel it's on the left hand side behind it. You have to take the front panel off to access the wires.

[@amosfleetwood1648]

My predator generator is outside. Nothing to obstruct it and the co2 sensor cuts it off all the time. I put a box fan in front of it to keep it running. That works. I hadn't thought of bypassing the sensor. Now I will.

[@startingtech3900]

Same mine had issue straight out the box. Even running outside my Van it kept shutting off. We don’t need security for safety!!! Bastards

[@dr.jerrygustafson7680]

I did the mod on my 3500 Predator and now my generator only runs 18 seconds and then shuts off. What I ended up doing is to remove the CO sensor, thoroughly cover the sniffer holes with electrical tape, undo the bypass (sure glad I used the blue connectors) and now it runs great!

[@bendingjeeps]

I wondered about doing that too. Glad you got it.

[@gregsepaniac8966]

Many thanks for the tip! Saved me a trip to the shop.

[@Snowbikebro2]

Thanks i have same problem on my 2000 predetor going to take it apart now and do some Fixing. just bought this thing nothing but restarting it over and over.

[@m.d.bishop4435]

lol "Sometimes you've got just got to be smart enough to stay alive"

[@steveh7920]

Y'all need to stop calling it a CO2 sensor. It's CO

[@Digitallifeconcepts]

The CO 1 sensor 😂

[@jeffpelletier7524]

Potato potahto

[@fluffernaut9905]

🤓☝️

[@NickMoran-en7rb]

Agree completely with the theory but not sure how you came up with your wiring bypass, plus my problem was a different brand, a Wen 3600 inverter generator, it has the CO watchdog. Any way I found the sensor and the placed a piece of tape over the actual area within the sensor that attempts to “inhale” the air around it. After taping I placed the generator in a placed it in a trailer for 30 min, a 10’ job trailer with all the doors sealed shut. Ran great!

[@AndyBrazelton]

I greatly appreciate the help. This is a great tutorial however I bought mine last year and it seems a bit different than yours and upon viewing other videos as well I can’t seem to find out to bypass. It is very aggravating as I run it on the back of my van in a tool box and although I leave the lid open in use it still cuts off after brief use. Hate to have someone hold my hand but I’m about to go crazy trying to figured a way around the issue. The wires on mine are not the same color as yours and it doesn’t seem as accessible either.

[@bryansell9568]

Thank you, I’ve been having the same problem

[@handymanraleigh7148]

Thank you All blessings

[@bigstick1970]

Did it cause a no spark issue I have the same model and it doesn’t have the module like the older 3500 mine has no spark I guess it could be the coil also just wondering if you had spark when that caused it to shut off

[@rileys8319]

That's a fantastic way to have problems down the road. Don't use scotch blocks to splice wiring.

[@RAYMO581]

HI When was this model updated ? Does it still use a Loncin engine ? is there a U tube comparing the old one to new one

[@paultice610]

The vacuum is there to pull air across the inverter to keep it cool when you do that run it with an open less air gets across the inverter and it will heat up

[@wmfinch]

This video was very helpful and good I really like the way you explained other things what I found out was you don't need to do this bypass necessarily if you just remove the cover near the oil spout where you add and change the oil and just keep that off it should be just fine like you said there's a lot of vacuum in the turtle shell of this unit. I've been running at 98 degrees heat in the California desert for a whole tank of gas at a time running a 14,000 BTU ac unit

[@rvfreedomtrail]

Brother I'm in Quartzsite trying to do the same thing. Brand new 3500 and the Co2 keeps shutting it off. It's 100 degrees today and I thought it was the temps. That Co2 deal sucks. I'll try removing the cover just to get me by. Thanks.

[@ronmoore3987]

I did the oil cove removed last night and it didn't do a single thing to help the only thing that's good for is air flow for the engine.i have the newest model, probky gonna be the brown and white wire bypass Fer this thing .Harbour Freight is becoming pieces of sh-t

[@wmfinch]

​@@ronmoore3987try a fan I had a floor model fan blowing from the front of the unit to the back with that little oil change cove removed. You may want to get the unit off the ground maybe resting on 2 by 4's it's got real issues pulling are from underneath as well are you in high heat I mean above 95 Fahrenheit? I haven't had any problem cuz now the weather's cold where I'm at I was really mad just like you are but honestly for the price I think I'm satisfied hope that works for you

[@wmfinch]

​@@rvfreedomtraildid it work?

[@rvfreedomtrail]

@wmfinch yes, I also bypassed the sensor. It was annoying, but my gen is always in the open air. Better now

[@078249]

I had the older style 3500 and never had a problem with it. I just bought a new one and the dang thing shuts off on Co2 every hour or so and it's sitting outside in the open air.

[@Elephant_Thoughts]

FOR ANYONE BYPASSING THIS SENSOR... Please, just make two jumper wires to insert into the plug sockets to connect the wires; ie. Brown/Orange to Black; Yellow to Green. That way, you can easily reverse this without any alterations or damages to the wires. I JUST BYPASSED MINES TODAY, PURCHASED GENERATOR TWO DAYS AGO! I can finally run it to break the engine in!

[@sweetdaddy77]

I'm sick of the nanny state... Enjoyed the video.

[@bendingjeeps]

I get it. We’re visiting Ireland right now. Their rural roads scream “don’t be a little b!tch” No guard rails, one lane wide, traffic in both directions, a 60 mph speed limit that, if you could find a straight section, would be certain death in the corners.

[@NedDavis-jp9cj]

Thank you for your information very helpful although mine is the same way new predator

[@bendingjeeps]

I’m glad it could help.

[@jimdavenport4484]

I have had the same problem with my Predator 1800 (two of them) and they were set on a pallet thats surface was covered with plywood to keep the generator from sucking in dust. Also we live off grid on 5 acres so it was set about 15 feet from or cabin with no obstructions around it. Just a shift in the wind and the generator would shut itself down and the little red light would go to blinking. I would turn the generator and it would be fine until the wind shifted again (very frustrating) I do live in the Mojave desert so a couple other issues I have had is the generator vapor locking I have had a 4375 two tail gators and two 1800s and they have all had vapor locking issues if temperature is above 100 degrees F. This problem can be solved by removing spark arrester on the muffler disconnecting the vapor line on top of the tank and covering the top of the generator so direct sunlight doesn’t hit it. I also would highly recommend getting the 2 year replacement warranty as I have never had one last more than two years and for approximately 100 dollars you can simply empty out (ALL) the gas and return and get another new generator for 100 dollars (cost of new warranty) instead of having to pay full price to replace it. I have an 1800 that I’am retiring to today that I have only had for about 9 months it still runs but stinks of exhaust. I think the valves just need adjusting but don’t want to try adjusting and void my warranty. I change the oil in my generators every 20 hours as recommended in the manual but no matter what I do I can’t get one to last even two years. I would like to hear from someone who has had one last over two years that gets daily use. Great video and I’am definitely going to do this to my generator when I get my new one home today.

[@bendingjeeps]

My highest hour one had 2300 hours at the end of the 2 year warranty period.

[@darylloth3237]

"Don take advice from KZbin". I see what you did there. 😁

[@darylloth3237]

I unscrewed the sensor, covered the holes on each side by tightly wrapping it with several layers of electrical tape and then reattached it. Tested it for two hours in an enclosed 80 sq. ft. shed and it did not turn off. Will update if I find it turns off during future use.

[@bendingjeeps]

Nice idea!

[@wajihalkordi5779]

Great video, in mine I used a piece of paper clipper cut it into two three side rectangles and then inserted them into white / green and black/white tape each to separate them and then taped the whole connector without cutting any wires. Its been working fine for the last few hours. Done.

[@PW4550]

did you plug it back in, or leave the connector disconnected?

[@michaelas9495]

How did you get the side cover off on the pull cable side?

[@timing-and-chance]

How do you pull that side cover off?

[@ROOMADAVE]

Think I have a different one either older or newer and advice on other generations predator 3500s? Can't find the sensor anywhere in the frame/box

[@bendingjeeps]

I’m not sure when they started the CO sensors.

[@ronmoore3987]

Urs is probly like mine there is no visible CO sensor under any panel, so the fix will either be unplugging thee connector behind the front face plate, or..... doing the splice with thee blue splicer plastic things

[@David-vn8iv]

I got the 1400 Which wires do i splice Its a four wire plug tyty so much

[@bendingjeeps]

Sorry. I’ve never had a 1400 model so I don’t know.

[@jefffrayer8238]

Good luck David. They had the 2000 on Sale for $480 this weekend so I bought one. I have two 3500's 2020 models that don't have the co sensor. This one was made Mar. 2023 and has 8 wires molded into that sensor, no plug in. They're trying to make it harder to delete as it doesn't look like others with co sensor. I'll get it figured out before trying to start it. Hopefully. Not seeing anything for the 1400.

[@Bounthravy]

You’re essentially cutting all the wires then just not connecting 2 colors back to the plug , can’t you just dead end the 2 colors from the beginning and keep everything else connected ? Or does those blue connectors serve a different purpose?

[@bendingjeeps]

I don’t know all the possible permutations but the blue clips connect the wires and the sensor is by passed. I can pop the clips off later if I want to restore it to original.

[@robertoarcecruz6149]

Where did you found the accessories for drain the oil and if you have name, number or model to placed an order. Thanks

[@bendingjeeps]

The oil drain hose and yellow cap came with the new generator.

[@sincerelaughter1561]

Thanks. I got three of these and each one co2 sensors has failed. This one I will try to modify. To better understand, did you just take the cord that’s hanging after removing the co2 sensor, cut before the white connector piece, the brown black white and green cables, then connect green to white and brown to black?

[@steveh7920]

It's not a CO2 sensor it's CO sensor. CO is for carbon monoxide. CO2 is carbon dioxide. Everybody keeps saying CO2 and y'all are wrong

[@bendingjeeps]

Yes. I didn’t cut wires just used the blue clamp on connectors to make the circuit. Saved the parts in case I have to return under warranty.

[@knowburtJ]

Can u just unplug the carbon sensor…?

[@ronmoore3987]

​@@knowburtJone guy said he unplugged and had success....

[@user-ny5uj9lh3n]

Having same problem with a wen 3600

[@bruno.loyola]

What happened with the old Predator?

[@bendingjeeps]

It had a few minor issues. Some of the plastic and metal of the frame had cracked and the pull start rope had broken. And the 2 year warranty was about up. So for the price of a new warranty I picked up the replacement generator.

[@frankyfreedomsp8974]

Can i do the same on the 6500 predator

[@bendingjeeps]

If the wire color are the same on the sensor I would assume it would be the same BUT I don’t know much about that particular generator.

[@bill7848]

F that. Aluminum duct tape cover hole done. I covered with two pieces. Still running, and no wiring bs

[@JFPEnterprise]

Great Informative Video. Other creators should take notes. Do you have an update for us, is it still running like a champ?

[@bendingjeeps]

Still going good! Not having to use it often as we’re in the mountains of Colorado. Plenty of sun for the solar.

[@johnwalker863]

We did that, and it still won't start.

[@Joeilliano]

I have the same problem with ipower gas generator GXS7600iRD I’m trying to figure out how to find the sensor and try to by passing. If anyone has the same generator and knows how to bypass please maybe can make a video on KZbin

[@r.llynch4124]

I'd leave this bypassed. It's not like its running inside your house or trailer living space. it is a safety overkill imo

[@DagdaCapital]

Did this and immediately popped a fuse.

[@NuclearWinter69]

Mine is brand new aswell shuts off every 10 minutes. Pulling my hair out. My last generator lasted 4 years and between the sticking float and the co sensor of this brand new one im completely unimpressed. Never buying another predator.

[@bill7848]

Aluminum duct tape for vents. Cut 2 pieces cover hole Done!

[@ronmoore3987]

The NOVEMBER 2023 MODELS DO NOT HAVE A VISIBLE CO DETECTOR UNDER ANY PANEL.THEE COVER UP ONLY WORKS ON OLDER ONES

[@harborfreight]

The CO shutoff system is a critical safety feature which can help to prevent the risk of sudden illness and death resulting from the accumulation of undetected CO, which is an odorless, colorless gas impossible for the human senses to detect. The health and safety of our customers remains our top priority and we recommend discontinuing any use of this product without a functioning CO shutoff system.

[@JM-lo9xk]

Then don't sell a product that requires servicing after having paying hundreds of dollars! Do you think I want to have to pay to have mine serviced every month because of this problem? No! People shouldn't be so stupid as to run it in an enclosed area or you should fix the problem...better yet offer free servicing for it every time it needs it! I'm sitting in 100 degree weather with a new generator that doesn't freaking work! Thanks harbor freight! You used to be my favorite store in the world! Not anymore! So I will take this advice before we die of heat exhaustion instead of carbon monoxide! 🤔

[@bparsons72007]

Harbor freight needs some strawberries and cheese to go with that whine.

[@micahspur]

U have got to be kidding us.

[@ItsJoeyyyy]

No way harbor freight themselves replied😭 that’s crazy.

[@DougTraylor-lj4jm]

Harbor Freight has been replying to all these videos showing how to disable this defective design. No way a generator running outside should shut off for CO. 😆 Disabled mine a while ago and finally have a useable generator.

[@mossygirl300]

Nothing but problems with this generator. It’s been nothing but hell

[@bill7848]

Why all that bullshit. Put a piece of foil tape over sensor. End of story. All that work for nothing.

[@bendingjeeps]

I thought about tape but didn’t want to totally half ass it. I’ve had tape adhesive come loose before. This seemed like a more solid solution.

[@bill7848]

@@bendingjeeps 2 pieces of foil duct tape. Over sensor hole. Done. Still stock no wiring bullshit. Been running Great

[@Belkod19]

Do you put in all over the sensor ? Or hust in the front of it

[@bill7848]

@@Belkod19 no just cover the slots completely on front of "sniffer" use a good foil tape. I used two layers.

[@wmfinch]

​@@bill7848I think the sensors inside

[@imakefights]

I did this and it did disable my CO sensor, but it created a problem with my starter. When I turn of the generator I hear a constant groaning noise from inside the generator without the motor running. I unhooked the battery and it stopped. Also notice that electric start button would not function now either. I disconnected the senor cut the brown and black, green and white, and then spliced those pairs together using a wire nut. What could be the cause?