Crazymedic

Thanks for the reply. No dash lights and everything is tight without cracks or defects. I had it all apart from air filter to the throttle body cleaned and inspected it Found nothing. I also used propane to check for leaks assuming I will get a response with any kind of Crack or loose seal on the entire intake. Again, nothing. Also, when I did spark plugs and the initial throttle body cleaning I disconnected the neg bat terminal so the ecu would reset everything when I was done. Made no difference.

Hello all, searched for days and can't find a solution to my problem hopefully someone can help. I have an intermittent surge in RPM. Smooth idle at about 500 RPM surging randomly to 900 rpm. No AC on and nothing added or changed that would be calling for an increase. I've done the obvious air filter and cleaned the MAF sensor. I also cleaned the throttle body (removed and cleaned well) and replaced the spark plugs with iridium Denso. My initial thought was an idle air control which I planned on removing and cleaning or replacing, but I'm not seeing a traditional IACV on mine so assuming it's part of the electronic box riveted to the right side of the throttle body. Additionally I've searched for a vacuum leak using propane but found no love that route either. It runs smoothly no misses or rough idle but the random surge is just enough that if I'm at a stop light for example and am not diligent about applying the brake well it will move the vehicle forward.....I'm stumped. Thanks in advance for any advice anyone might have.