Question Asked: P0300 code went away after change fuel filter, why is it still idling rough?
November 07, 2013, 06:21 PM
I had a P0300 multi misfire code, I changed the spark plugs, wire set, fuel filter, air filter and cleaned the throttle body and the code went away, but is still idling rough and stalling when I come to a stop sign. I checked the fuel pressure and that is running normal. I then checked the vacuum lines for leaks and found none. I am not sure where to turn next.