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Df50 check engine light warning help please

I have a 2000 df50 and the che

I have a 2000 df50 and the check engine light will flash three times beep and flash one more time. The engine runs fine and most of the time it does this at low speeds or at idle. Any info would be great. This is my second post and i want to say thanks to the one man with all the answers.
 
It's the IAC valve code.

It's the IAC valve code. (idle air control) It regulates a portion of air intake flow to the intake manifold when your engine is idling or trolling.
 
MY DF50 WILL BEEP 3 TIMES WHEN

MY DF50 WILL BEEP 3 TIMES WHEN I GET 100 HOURS ON MY ENGINE TELLING ME TO CHANGE MY OIL . iT TELLS YOU HOW TO RESET IT IN THE MANUAL IF THATS THE PROBLEM.
 
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