Rough idle (low) 1991 Accord 2.2
 

Ok I tried to figure out when it does it but I can’t it’s to intermittent what’s all the stuff to check again and what’s the idle supposed to be….it is a bit worse now that I got the a/c working. But sometime it’s ok, and sometime if you put it in neutral it goes up them drop it in gear and it stays good …. Sometime …lol.
Mike Kozura

mike try ajusting the idle screw.

Don't mess with the idle screw.

Clean the throttle body and both sides of the throttle plate. Then clean the IACV screen.