Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Please play nicely.  No one wants to listen/read a keyboard warriors rants....

Pages: [1]   Go Down

Author Topic: ICV - now cleaned but how does it work  (Read 1099 times)

0 Members and 1 Guest are viewing this topic.

Rob James

  • Junior Member
  • **
  • Offline Offline
  • Gender: Male
  • Sheffield
  • Posts: 143
    • View Profile
ICV - now cleaned but how does it work
« on: 08 February 2010, 08:34:10 »
Hi,

After advise from the forum I cleaned the ICV. It looks like it simply alters the amount of air going into the engine. I'm the sort of person who likes to understand how things work, so can someone explain to me what the ICV does and how it works and when the valve is open/closed(my cark knowledge is small, but growing)?
Cheers,
Rob.
Logged

RobG

  • Omega Queen
  • *****
  • Offline Offline
  • Gender: Male
  • Bristol
  • Posts: 13831
  • I might have a link, pic or part number for that
    • 16 plate Mokka. Vivaro
    • View Profile
Re: ICV - now cleaned but how does it work
« Reply #1 on: 08 February 2010, 09:06:07 »
In-depth explanation courtesy of "Grumpy" http://www.omegaowners.com/forum/YaBB.pl?num=1194007453. From a 2.0ltr, but basically same operation
« Last Edit: 08 February 2010, 09:07:00 by RobG »
Logged
All that is necessary for the triumph of evil is that good men do nothing.

UPVC windows/doors/fascias/soffit/gutters supplied/fitted

Rob James

  • Junior Member
  • **
  • Offline Offline
  • Gender: Male
  • Sheffield
  • Posts: 143
    • View Profile
Re: ICV - now cleaned but how does it work
« Reply #2 on: 08 February 2010, 09:26:47 »
It all looks a bit different on the 3.0. But am I right in thinking that when at idle the only air coming into the engine if via the ICV? And that the ECU alters the position of this and the amount of fuel to control the idle speed of the engine?

Also I've only cleaned the ICV, on the 3.0 should I clean the breathers as well - although not done long ago, so I probably don't need to this time.
Logged

Moos3h

  • Junior Member
  • **
  • Offline Offline
  • 0
  • Posts: 71
    • View Profile
Re: ICV - now cleaned but how does it work
« Reply #3 on: 08 February 2010, 09:46:26 »
You're about right there really, the idle speed valve allows a greater or lesser amount of air in based on feedback from the ECU.  This keeps the idle speed steady in varying conditions.  You'll notice that the valve is never fully closed at it's default point too.  If yours is properly 'shut' when inactive, there's something wrong with it.

Cheers,
James
Logged

Rob James

  • Junior Member
  • **
  • Offline Offline
  • Gender: Male
  • Sheffield
  • Posts: 143
    • View Profile
Re: ICV - now cleaned but how does it work
« Reply #4 on: 08 February 2010, 10:19:50 »
Quote
You're about right there really, the idle speed valve allows a greater or lesser amount of air in based on feedback from the ECU.  This keeps the idle speed steady in varying conditions.  You'll notice that the valve is never fully closed at it's default point too.  If yours is properly 'shut' when inactive, there's something wrong with it.

Cheers,
James
Sounds like I may have a problem then. I'm sure when I took it off it was fully closed. I'll have to take it off again and double check. How much should it be open by?
Logged
Pages: [1]   Go Up
« previous next »
 

Page created in 0.014 seconds with 17 queries.