Hey guys, I’m getting a P0507 code “idle air control system RPM higher than expected” on my 04 accord lx 2.4L
so far I’ve replaced the MAF sensor, idle control valve, and cleaned out cleaned out the throttle body. The last thing I can think of, before taking it to a shop, is to run a smoke leak test for vacuum leak. Other than that, I can’t think of what it could be causing the surge. When you start the car the rpms will be around 2000 then it will come down and While idling, the rpm’s will jump up and down like it’s reving a little. Any help is appreciated.