So got the following fault codes on my 2002 type UK sti , idle is high 1500rpm, had the engine out while restoring the car where should a start ?

 

Maybe getting the DTCs re-read with different software as none of those codes listed appear in UK/European Subaru workshop manuals.
Also using an Autel Maxilink ML629 - none are listed against Subaru.

 

Using an elm 327 in the obd port is there any android apps that will work ? Or will I need to get an expensive reader ? Cheers

 

Might be worth clearing the codes and see what comes back

 

Will do , report back when I get a chance

 

So reset codes ,cars idle now seems to fluctuate can hear the tone change then it totally changed so ran the scan and came up with this ,sounds rough as now

 

This may need cleaning/new gasket seal

 

See post 10

https://www.scoobynet.com/1049799-ne...r-wagon-2.html

 

Cheers for the replies guys, air filter is new ,one before that was a cosworth , tryed cleaning but never realised at the time the flap rotates will pull it off try again see if it changes anything ,also going to try smoke test it see if there's any air leaks

 

When idling you can find air leaks with soapy water and a hand water sprayer,
The tone changes when the soapy water covers the air leak.

Did you take the engine out complete, no intake manifold been removed etc?

 

Intake manifold has been off tho cleaned all the faces up and new gaskets all torqued back down

 

Sorted the idle no codes so far , had to take the aicv apart , screws were just chewing so ground the heads off, once apart could barely turn it even after the first round of cleaning so turned and cleaned it got it spotless then new screws and gasket