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Coleman UT400; Hisun HS400


John Gubancsik

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I have almost the same issue as John.    Parked my 2022 Coleman 400, (seatbelts crossed and hooked up continuously) then it refused to start until pressing the gas pedal.  Stalls when I let up on the gas.  Checked connections on seat belts( where is the seat belt limiter?), removed all connectors and sprayed with electrical cleaner.  Changed MAF sensor, checked fuel flow (new fuel filter), good spark checked with inline tester (new spark plug).  

As I understand it, the MAF is also a temp sensor that determines if it’s a cold or hot start and schedules fuel accordingly?  About a month ago on first start of the day it cranked but no start.  Pulled MAF connector , sprayed and it started right up.  When it happened again 2 days ago I ordered a new sensor to help eliminate possibilities after cleaning didn’t work.

Does the ECM fail on these at times?  Ive had to replace the water temp fan relay and I’m just wondering if the sensors and electrical control are the primary fail points of the 400?
If someone with experience on this rascal could elaborate it would be greatly appreciated!

 John I apologize, not trying to hijack your thread it just sounds like a similar problem.

Scott
 


 


 

 

 

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Guys, I think you’re sniffing up the wrong tree with the seat belt limiter. My Vector 500 does this intermittently. While you can start it and keep it running with a little throttle, it will drive fine at any speed as long as you don’t let it idle. If the limiter was working it would not drive. I can’t tell you what it is,yet, but I don’t think it’s that. Mine always resolves itself over a couple stop/start cycles. I’m purchasing a code reader. I’ll let you know if I find anything. 
Pop Bob

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