I have a 98 civic ex automatic, When i put the car in park it will rev up and down from 500 to 2500 rpm, and when i put it into drive then it sits still at 1200 rpm and i can feel it pulling forward cause of the high rpm. Ive heard alot about the iacv so i thought i would give it a shot and i can not find it. There is nothing attached to the back of my intake manifold. The weird thing is that it only acts up 3 or 4 days a week the rest it runs great. please help and thanks!!

 

Can you post a pic of your intake please?

 

yes 1 min

 

it should be here what model do you have.

 

Its a 98 Civic EX Automatic, The pic is of the back of the Manifold and the iacv is not there any ideas please thanks