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Old 26th June 2007
Adrenaline406 Adrenaline406 is offline
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Default Air idle control valve interchange.

I am having an idle issue (st sits at around 1250RPMs half the time) and im pretty sure im looking at a new AIC valve.

I was looking at the 900aero rebuild DIY, but it seems hes using a prefacelift car so his AIC is different from mine (post facelift). As far as I can tell, there is no way to crack mine open and service it.

1) Is there a way that im missing that will allow me to service it?

2) can i use an older one in my car (im pretty sure theyre both a 2 wire set up) so that it is serviceable and my options are more open for the replacement.

Thanks
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Old 26th June 2007
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900t 900t is offline
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Quote:
Originally Posted by Adrenaline406
2) can i use an older one in my car (im pretty sure theyre both a 2 wire set up) so that it is serviceable and my options are more open for the replacement.

Thanks
No, they are 3 wires

It's not the facelift, it's the injection system. You have LH 2.4. This makes it easy, since anything that isn't LH 2.4 is 3 wires so you just need one with 2 wires. This would be 1988 - 1990 non turbo models and 1989-1994 turbo models, a few 9000's.

They are generic Bosch, you can get one off of anything. I think VW Jettas from the '90's have a similar one.

Try cleaning the inside...

With the AIC totally open it runs about 1 500 r/min. Try unplugging the AIC and see what happens.
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Old 27th June 2007
Adrenaline406 Adrenaline406 is offline
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Default

thats some really good info on the aic, when i do replace it (which will be soon) ill need that. But as the case usually is, it was a much simpler issue than i first expected.

As you all know on our throttle bodies, we have the brass fittings for coolant and the aic. Well the hose was firmly connected to the brass part, but the brass was not firmly connected to the throttle body.

So a quick grind so that it doesnt protrude into the intake anymore and some JB Weld were all that it took to resecure the sucker Im now just waiting the 4-5 hours that it takes for this stuff to cure.
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Old 27th June 2007
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nuclear_jimbo nuclear_jimbo is offline
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While you've got the AIC off it's always worth spraying a load of carb cleaner or similiar through it to sluice out the dirt that gets stuck in there - there's very little clearance between the disc and the alloy housing that it rotates in and it seems to be one of those jobs that always makes an improvement.


Cheers,
Jim
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