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400exc
04-20-2011, 06:25 PM
Does anyone else have their 450 run at high idle when the quad is warm? When I hit the gas a little, it stays at higher idle and slowly goes down after about 5 seconds. It seems to do this only when it is warm. I let it cool down for about a half hour and it still did the same thing. Any suggestions? Thanks in advance.

X400EX
04-21-2011, 08:22 AM
I have the same problem. I replaced the IACV, it was ok for 30 minutes and then the problem came back.

Sometimes it will run perfect, other times it will be high idle. Right now, my quad was running perfectly. If the problem comes back, I will replace the TPS and let you know.

I know some people replaced the whole throttle body with sensors and the problem was then solved.

400exc
04-22-2011, 03:01 PM
I mean it isn't a big deal, just wanted to find what the problem is. It only happens when it is getting pretty warm and I putt around. Let me know what you find out.