chocolate_o_brian

iTrader: (22)

I've noticed that with the colder weather coming in and the Scob taking longer to warm up that she idles quite high until warmed up.

I've had 4 Scoobs and this is the only one to do it.

Example. From stone cold I'll switch her on and she'll idle at 1500rpm, even after a blip of the throttle. As the water needle gradually creeps up the idle gradually drops. But I thought Scoobs were supposed to idle at around 750rpm regardless or a tiny bit higher when freezing cold?

What would this point to?

Car is standard apart from a Cobra Race tube catback system. Standard recirc valve etc.

TIA

Andy

P.S. when warmed up fully, she sits there lovely at 750rpm or so - sometimes idles around 8-900rpm after a blast? Cheers.

QM14

First thing in the morning mine idles a little under 1500 rpm after about 2 mins of driving it's normally dropped to 600rpm ish tho. i do leave it to stand for 30 secs to a min before driving? i assumed that was normal? My old car used to do pretty much the same thing though it didn't warm up as quick

prodriverules

iTrader: (52)

Nothing wrong there choc,the auto choke doing its bit.
That's the reason for having the water circulate through the idle control valve.

bigbruiseral

iTrader: (1)

Same my WRX done it today brrrr chilly

chocolate_o_brian

iTrader: (22)

Just sure my last classic didn't do it as predominantly. Wonder of the idle control valve needs a clean out. Seems to take a while for the idle to sort itself that's all.

prodriverules

iTrader: (52)

Certainly wouldn't hurt to give it swill through with some engine wash and then take it for a spin to learn its way again once working freely if its holding the revs up longing than it should.

chocolate_o_brian

iTrader: (22)

Just had a think back actually to when I did the knock sensor and I wanted to do ot then. Couldn't get the screws out to clean the valve itself so may struggle I can drill them out and re-tap. Hmm... Fun, fun, fun, eh Ryan

prodriverules

iTrader: (52)

Owning an Impreza is all fun!!especially when doing the work yourself

The Rig

iTrader: (13)

i`m more impressed at the idle speeds quoted, 600 and 750, if i had mine idling att hat, it would cut out, mines at a steady 850-1000 depending on how the car feels

any lower and its as lumpy as a sweetcorn turd

markb_s1

interesting.. mine's always bang on 700 when warm.

craigfturbo2000

1500 cold and 700 warm rain or shine!