Fixing Iac Valve In Rb20

[Phil-085]

Hi Guys

I know there was a thread here somewhere showing how to fix a IAC valve but I cant find it....it had photos of the inside of if as well....

Not after the AAC cleaning D.I.Y. i have found it.

Any help would be appreciated

[stimps]

I would find this helpfull too. I have taken out my IAC valve and found it to be dead (according to owners manual testing procedure , putting 12v directly onto it, it is supposed to open and then close slowly over next 7 minute period)

I then took 2 off Vl commodores at the wreckers (they are the same) and they both dont work either!!

what am I missing?

[Kwyjibo]

I did this a while ago and my memory is a bit sketchy. Basically it sits under the plenum just on the firewall side of the throttle body. I think you need to remove the throttle cable assembly. If I remember right there is a plug at the top, and the connection from intake to plenum connects either side. To get it out there are two bolts, should be able to get at them with a long socket extension, the hoses are a pain in the ass due to reach. Once you get it out there are 4 screws to undo, careful when you open it up because there is a very small spring inside.

To fix the IAC you need to make sure that the spring holds the valve shut by default, only when voltage is applied should the valve be open. I don't have any pics and its hard to describe but if you play with it a bit you will see what I mean.