IAC valve question
#1
IAC valve question
This is a question concerning the installation of the IAC valve on an '85 190e.
Which way should the flow arrow point ? Towards the plenum (bottom) or towards the valve cover (top) ? I also see a black plastic adjustable knob on the IAC, is this to fine tune the idle ?
Which way should the flow arrow point ? Towards the plenum (bottom) or towards the valve cover (top) ? I also see a black plastic adjustable knob on the IAC, is this to fine tune the idle ?
#2
Almost a Member!
Join Date: Sep 2004
Location: Edmonton, Ab, Canada
Posts: 67
Likes: 0
Received 0 Likes
on
0 Posts
84 190E
Originally Posted by Clem
This is a question concerning the installation of the IAC valve on an '85 190e.
Which way should the flow arrow point ? Towards the plenum (bottom) or towards the valve cover (top) ? I also see a black plastic adjustable knob on the IAC, is this to fine tune the idle ?
Which way should the flow arrow point ? Towards the plenum (bottom) or towards the valve cover (top) ? I also see a black plastic adjustable knob on the IAC, is this to fine tune the idle ?
First off a lot of your problem can be stemming from a leak
"Pest conditions:
![Smilie](https://mbworld.org/forums/images/smilies/smile.gif)
![Smilie](https://mbworld.org/forums/images/smilies/smile.gif)
![Smilie](https://mbworld.org/forums/images/smilies/smile.gif)
![wall](https://mbworld.org/forums/images/smilies/banghead.gif)
(07.3-l 21)
or make sure the intake boot that attaches to the throttle body has no leaks - that is the one greatest cause to rough idea amoung other running problems