The main reason behind that was the manufacturer put a coating on the edge of the throttle plate, probably teflon or something like it. The coating was there to resist carbon/gum buildup but the problem was in time the buildup would still collect and cause problems. The idea of the sticker was that some cleaners would remove that coating. So the two problems are the coating is useless after a period of time so you either go ahead and clean it or replace the throttle body, it never hurts to try the cheaper method first.
As far as never running right after cleaning, as long as there is no vacuum leaks, and all sensors are in spec and adjustment if applicable you should unplug the battery or PCM to reset KAM and let it relearn idle strategy.
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Today's Featured Article - The Mud Daubers and the Old John Deere - by Jon Zehnder. I have a 1941, John Deere Model A tractor I have owned for about a year and a half. This is my first (in case my wife reads this, "FIRST") tractor and it has been a learning experience. After considerable advise and assistance from local tractor nuts and the forums of Yesterday�s Tractors, I had finally got it running pretty well. I have tuned it up, overhauled the carburetor, installed a borrowed, rebuilt magneto, installed a new Power-Trol, patched the radiator, installed new front wheels a
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