I have a 1.5 single cam engine in a 93 4 door.. when im stopped, my car revs up and down from about 800rpms to about 1500 rpms. i replaced the mapsensor,o2 sensor and the idle control valve.. any other ideas it might be..
please let me know.

thanks

 

Mine does the same thing. The guy at the shop told me that is caused by a dead or bad temp. sensor. If not that, I would guess it could be a vaccum leak.

 

http://www.ef-honda.com/ben/Badidle.php