i have a 94 civic with a b16a which has been runing very healthy, now all of a sudden at idle revs up and down and bogs really bad in first and in all gears at low rpms. whats are some things to check with this problem?

 

sounds like the same problem i have got wiv mine. i have been told that it is the idle valve controller but im still lookin into it so any help wud be wkd

 

take intake off and have some one start the car, cover the hole in the throttle body with your finger if it stops it more then likely your idle valve controller or maybe you have a vaccum hose that fell off