Hi guys

[9toejoe]

Hi I have had a Scooby for about 2 months and it been really good . But the last couple of days it's been sounding rough and has uneven idle . Any ideas ?

[stants]

Hi welcome, can you give us a bit more info on the symptoms? Rough as in the revs are rising and dropping or something else ?

Cold be something as simple as a loose or split hose.

[9toejoe]

Well it revs up 2.5k then drops nearly stalling all by itself . But driving seems ok . I checked all the hoses but I double check . Cheers dude

[stants]

Form cold or when it's warmed up ? maybe idle air control valve or maf problem,

[bowthruster]

Hi and welcome mate,as stants said above could be either,i had similar issues as yourself,and my problem was the maf in the end.Take the maf out while the engine is running and the engine should stall-that normally means the maf is fine but not always.Have you checked to see if any codes have flagged up?Faulty maf is code 23-two long flashes then 3 quick.

[9toejoe]

Thanks guys . Haven't for codes yet . This is my first turbo car so complete novice lol . Where abouts is the maf and idle valve ? Plus when it's warmed up it still does but doesn't rev so high .

[stants]

When cold starting it should have a high idle of around 1.5k if you sit and leave it, it will drop to between 700-800rpm.

Does the car have an aftermarket cone filter on ?

If you look at the car and find the air filter/cone and follow it back there is a large diameter pipe with a black square box on, thats the maf.

Depending on what version engine you have the idle control valve wil be situated on the intake manifold somewhere, I can't tell from the pic what age the car is.

Obviously with it being a subaru you should get the offbeat lumpy exhaust note when warm but it shouldn't try and stall, if it's doing it when hot I'd look more closely at the maf as yhe idle valve only controls the cold start procedure

[9toejoe]

It was running sweetly with a nice lumpy sound . Used to an even idle just under 1k . Now it's up and down all by itself peaking around 2.5 k . Yes it has a cone filter but this happened well after it was fitted . When it hot it still does it but not as bad . Thanks

[savage bulldogs]

Hi n welcome to soc joe

Have you tried a self ecu code check ?

http://uk.subaruownersclub.com/forums/topic/2366-manually-reading-ecu-codes/

although it does sound like either ...

Idle control valve

Maff

air leak

Or a misfire

A code check might pin point the problem or at least narrow it down [emoji6]

[Gambit]

Hi joe welcome to S.O.C. as Savage has said check that.

[Jay762]

Wotcha and welcome

[9toejoe]

Thanks a lot guys I will getting cracking tomorrow and I let you know the outcome . Fingers crossed lol

[stants]

On the top of the maff housing there will be a sticker let us know what colour it is if the worst comes to the worst

[9toejoe]

Well I put it into dianognostic mode it whirled and everything but no flashing but then drove it and it flashed . Confused .

[9toejoe]

There no sticker on the Maf :(

[Gambit]

With the engine running have you tried to unplug the maf if it stalls its working if it doesn't abd keeps running thats a good dign the mafs deador going. It doesn't always show a code with the maf either [emoji20]

[9toejoe]

Well I pretty sure it's the maf . What the best one to get and where can I get a good deal ? Thanks guys

[bowthruster]

I personally would get it from a Subaru dealer as there about £100ish .Do not buy from eBay as they are crap cheap ones and don't last long,as I found out.Or try www.importcarparts.co.uk  £92

[stants]

Unless it's a purple one then your up the Creek as you need the whole assembly and pipe bit at 385

[9toejoe]

Ouch ! What is the difference in the colours ? I have jap performance just around the corner they have an orange one for 125 ?

[stants]

Design, some like the orange ones have a 'drop in element' two screws and yoyr done. Mine however doesn't so you have to buy the whole fecking thing

[9toejoe]

Damn . Thinking of getting an orange one think it will fit . Is 125 a good price ?

[stants]

Prive sounds about right, have a look at scoobyworld they sell fifferent ones, orange green, yellow I think.

No idea of it will fit do you know what version car yours is ? Or easier what year is it ?

[9toejoe]

97 r reg . Version 3 I think . Thanks mate

[9toejoe]

Sorry to be a pain hopefully I get a maf in the next couple of days but the timer is now increasing . Usually 40 secs it has gone up to six mins after a long run . Help !