Leaderboard

I found a thread on another forum describing much the same problem you have .. I'm copying and pasting his problem and solution : i just got a used 2003 Bombardier Quest 500 with the rotax motor and the po said it needed an oil change because the oil light was on and that was making it cut out. it cranks and idles great, runs good, good trans, steering, tires, etc, but when you give it gas, it cuts out like it has a rev limiter, but it does it in all gears. when i first crank it, it will rev all the way up, but after a minute it starts cutting out. if i cut it off and wait a few minutes, it will rev all the way up again for a minute or so. does anyone know what i can check? ive checked the intake boot, the carb is clean on the inside, ive changed the oil, the oil sending unit is bad, ive grounded out the wire so the light would go off and it still cuts out. what else can i do? thanks, chuck got it fixed! it was a ground wire pulled out of the MPEM box. now i need a good speedometer and the half round light section beside it, the guy i had fix it flipped it over and messed that stuff up. maybe someone is parting one out. it was a ground wire coming out of the box bolted to the air box. seems like it was black and grounded to the frame and pulled loose from the plug. I also saw it noted there is a rubber section connecting the carb to block. . Check there for vacuum leaks too. That's the best I can do to help. From other forums I gather the problem can also be from a rev limiter not reading a sensor right , or a bad sensor so maybe a check of the wires to the various sensors is also warranted.