idle problem

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Jun 9, 2001 | 01:16 AM

zafrir

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Audiworld Junior Member

Joined: Jun 2001

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idle problem

Hello to you all
I have audi coupe 2000cc,year 1990.
I have some problems with my coupe...but the worst is when I activate some heavy electric consumers (fan or fog light+lights )the idle is felling from 1100 to about 800 rpm.
I checked my battery, injection system(k-jetronik),vacuum links, timing, ignition...
Please send me your advises
Yours
zafrir

Jun 9, 2001 | 02:20 AM

MikTip

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Joined: Jun 2000

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Clean your ISV(Idle Stabilization Valve).

Normally requires removal and spraying it out with brake parts cleaner or carbarator cleaner.

Jun 9, 2001 | 02:52 AM

zafrir

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Re: Clean your ISV(Idle Stabilization Valve).

It's a k-jetronic injection system, its mechanical...it do not have an ISV

Jun 9, 2001 | 06:30 AM

MikTip

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I'm sorry, on the Bosch "K-jet" system its called an Auxillary Air Valve.

Jun 9, 2001 | 10:15 AM

Evilclown

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Except that it can't be cleaned.

It's really not an 'idle stabiliser', per se, it's part of the warmup system, it allows extra air in to balance the mixture when cold, and as it warms up, the bimetal spring inside it expands, closing the airway and thus taking it out of the loop. So, if functioning properly, it shouldn't have any effect whatsoever on the idle of the car.