I've got a 2016 sportsman 450 HO with 50 miles and 9 hours. It sat for 6 months while i was deployed. But prior to the deployment, last junish. It started running rough, it would shut off while idling and would break up and back fire while accelerating. Additionally. It would get over 20mph. I put fuel stabilizer in it while deployed.
Upon returning, a couple weeks ago. I installed a new fuel pump, injector, plug and battery. I blew out the fuel rail and lines with injector cleaner and compressed air and drained all the old fuel and put new 93 octane in it.
Yesterday, it started and idled fine for 20 minutes so i decided to test ride it. It would only get to 20mph and then bog down or break up.
Today I took the plastics back off as it wouldnt even try to crank. I pulled the brake lever in as usual and nothing. coincidently the brake lights weren't coming on either. So I unplugged the break light switch and jumped the wire and it started. But it back to running for less than a minute and just shutting off. It doesnt idle down or give an indicator that it is going to stall, it just dies.
The map/maf looks clean and dry. I pulled the throttle body off and with the key in the "on" position did a functions check. The only thing I found peculiar was that at wide open throttle the body blade only opens about half way. I took it off and unplugged it. It does move all the way open with my fingers. Has anyone else ever looked inside the throttle body to see how their drive by wire works?
Anyhow, I'm stuck. I feeling like it's an ignition timing thing or anECU, but i dont know.
Thanks for any help.
Jason
Upon returning, a couple weeks ago. I installed a new fuel pump, injector, plug and battery. I blew out the fuel rail and lines with injector cleaner and compressed air and drained all the old fuel and put new 93 octane in it.
Yesterday, it started and idled fine for 20 minutes so i decided to test ride it. It would only get to 20mph and then bog down or break up.
Today I took the plastics back off as it wouldnt even try to crank. I pulled the brake lever in as usual and nothing. coincidently the brake lights weren't coming on either. So I unplugged the break light switch and jumped the wire and it started. But it back to running for less than a minute and just shutting off. It doesnt idle down or give an indicator that it is going to stall, it just dies.
The map/maf looks clean and dry. I pulled the throttle body off and with the key in the "on" position did a functions check. The only thing I found peculiar was that at wide open throttle the body blade only opens about half way. I took it off and unplugged it. It does move all the way open with my fingers. Has anyone else ever looked inside the throttle body to see how their drive by wire works?
Anyhow, I'm stuck. I feeling like it's an ignition timing thing or anECU, but i dont know.
Thanks for any help.
Jason
