To anyone at all I need help.. I have a 91 accord lx sedan. I have been dealing with this idle surging problem for a solid 5 months. I have tried everything to fix it. I’ve replaced the tps, throttle body, iacv, blocked the fast idle valve on the end of the throttle body not the one on the side of it since the Japanese models don’t have them at all on the end. Checked for vacuum leaks and have none. I’m fresh out of ideas and need some help. All the advice I’ve gotten from techs hasn’t fixed my particular issue.

 

I have the same problem with my 94 ex. It doesn’t do it if I have my a/c running though.