I have a 2004 sportsman 400, was using it the other day around the yard and out of nowhere it died. Would not restart until i turned the key off and back on again. Now it will sit and idle forever perfectly. As soon as you touch the throttle it dies. Got frustrated and put it in the garage for a few days. Went out today started it up and it ran fine again. Drove it around for a while all seemed good. Then it did it again. I have had the cover off and verified that the throttle safty switch contacts are not touching when pressing the throttle and have held them apart while pressing throttle and it still dies. Carbs are ruled out as it ran perfect for about 20 mins today until the problem presented itself again. Battery conections are tight and is showing 13.2 volts at rest with key off and im getting 14.5-14.8 at idle at the battery. Anyone have any segestions? Im beginnig to think ecm as once it dies it wont restart until you cycle the key off and on. Is there any way to check the ecm?
