Fluctuating Idle

1grasshopper, Feb 26, 4:26pm
We have a 94 Mitsi Libero GT, 4g93t.When idling the revs go up and down between 1 and 2.We replaced the idle speed control thing and its still doing it, where else should we be looking!

intrade, Feb 26, 4:27pm
for a vaccume leak .

bigfatmat1, Feb 26, 5:09pm
As above. I have also struck the idle air adjust screw sucking air through