Changed the O2 sensor and the code doesn't appear in Diagnositc mode anymore.

But the car drives exactly the same.

Like people have said....take it to a workshop...there are a number of reputable ones in Perth including Maximum Motorsport and All Star Garage plus Leigh Hynes/RMS in Busselton. It appears that you've wasted a month of your time trying to fix it yourself via the internet.

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No Subarus currently owned

Nah not a month just a few hours here and there. Spent more time writing the posts hehe.

Such a simple problem I thought. It sux hows it perfect one minute then screwed the next. Ohh well. Get to the bottom of it soon.

Sigh.....
(First post on this 5/12/09....today 6/1/10)

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No Subarus currently owned

Hey Unders
If you want to get it looked at but dont want to go to perth give Leigh Hynes @ RMS a call, he is from perth but has set up down in busselton as well, he is a subaru specialist, knows his stuff and has a mobile service

http://revlimitms.com.au/index.php?o...id=5&Itemid=47

Im wondering if you have an intermittent brant problem (dry solder joints at the fuel pump relays causing a fuel cut) its common and causes similar symptoms

You did check for vacuum leaks on all intake hoses didnt you, including under the intercooler
those subaru techies are renound for leaving clamps loose

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FIXED

Got my new IACV (From Wangara wreckers)(3rd one)

I have done a good drive and Not a Problem yet....

The other two IACV's were obviously stuffed. This new one put in and not a problem.

They both moved when the key was on but obviously they were slow/laggy.

I can't believe that one little plunger had so much effect on drivability out of idle. The car never stalled or got close.

I'm Stoked. I hope it stays that way.

Thanks for all your help.

At the end Of the day It might have taken a month but I still saved a SHIT load of Money.

Thanks Guys.