P0401 and P0420 CEL codes: 2001 Accord
#11
I took the intake cover off again and cleaned up/out the IAC valve. Put everything back and still had the surge. I tapped on the top of the throttle assembly and the surge went to a very, very quick surge. I drove the car around the neighborhood and it is performing marvelously now. No CEL yet and the engine even sounds better/smoother. Thanks for all the input, you saved me alot. Besides, I love sticking it to the man!
#13
My car did that before, i unplugged the MAP sensor on top of the throttle body the surging went away, i plugged it back in the idle surging again, but i tap the sensor a lightly couple times the idle smooth itself out. Cleared the code and the idle smooth since then.
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