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  1. ATV Repair and Maintenance
    Recently got a used 450, when trying to start engine, it makes a click noise and I can feel the click coming from the ecu. Thinking it could be something behind the ecu but not sure. Any help is welcome. Thanks
    ecu sportsman 450 won't start
  2. ATV Repair and Maintenance
    Does anyone know if you unplug the ECU and turn the key on while ECU unplugged would it damage anything? 2016 sportsman 570SP thank you
    ecu electical sportsman
  3. ATV Repair and Maintenance
    It has recently come to my attention that certain Polaris vehicles with claimed Capacitive Discharge Ignition (CDI) actually has Electronically Controlled Inductive Discharge Ignition (ECM or ECU unit). From Wikipedia: As ignition technology developed, engineers realized that a functional...
    cdi ecm ecu idi ignition system
  4. ATV Performance Modifications
    I've had my mind set since this past summer on doing a RVS ECU reflash to my 2015 Sportsman 850. I was waiting until holidays were over and I hit dead of winter and I dont ride. When I went to RVS site today to refresh my memory on price & stages of ECU flash, there is a new option in the ECU...
    dynojet power vision ecu sportsman 850
  5. ATV Repair and Maintenance
    Im having issues with the ecu in my sportsman 570 sp 2015, and have decided to get a new ecu. Does the ecu have to get coded/calibrated before plugging it into my sportsman or is it just plug n play?
    code ecu replace ecu sportsman technical
  6. ATV Repair and Maintenance
    Is there any other "Sensors" or "Switches" that makes the ECM (#4012616 ECU) spit out ground from pin -6- (E70)??? A few months back I started having problems starting my Sportsman 850 xp eps 2010. When turning the key to "Start" it would go "Click, Click, Click" but nothing else... but not...
    ecm ecu ground start selenoid relay
  7. ATV Repair and Maintenance
    Upon hooking up the battery leads the fan and fuel pump immediately start to run. After reviewing the schematic it appears as if either the ECU is malfunctioning or the fan and power relay are welded shut. A bit of history, it appears as if one the ignition cable (spark plug cable) shorted out...
    ecm ecu fan fuel pump relays
  8. ATV Repair and Maintenance
    My 05 700 Efi Sportsman has been doing fine today I went riding had low beam lights on and was returning home and it just shut off everything , display blank, no fuel pump nothing, sat there maybe 10 seconds switched back on started back up everything alright, did it twice more, acted same...
    700 display ecu electrical pdm
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