Idle stabilisation on CIS-e engines

[Mark R]

On KE-Jet (CIS-E), idle handled by the ISV (idle stabilizer valve), which is
ECU controlled.  Often they're an overlooked maintenance item and become
clogged with oil (blowby, etc.).  I recommend they be cleaned at every other
oil change, especially on an older car.  Cleaning is done by unclamping the
hoses and spraying the interior with fuel injection cleaner (basically O2
sensor safe carb cleaner).

The operation is quite simple- 12V solenoid with a calibrated air bypass.
The idle is controlled by how much air bypasses the throttle body via the
ISV.

Mark Rosenkrantz


On 1/11/07, rob <rob3 at hod3.fsnet.co.uk> wrote:
>
> Hi gang,
>
> Quick question on the KE jetronic or cis-E as I beleive it is known
> stateside.
>
> I'm looking (occasionally) at my brothers '89  80 coupe with this system.
> It has all the lambda control all dpr hallmarks of KE, whilst the ignition
> system is not integrated - it has a knock sensor and no vacuum advance, but
> does not use a crank position sensor so still uses a basic setting of the
> dizzy for static timing.
>
> If that's info enough to start with, can anyone tell me if Idle
> Stabilisation is done old-style (big relay thingy in the fuse box) or is it
> handled by ECU. ??
>
> All suggestions appreciated.
>
> Cheers Rob.
>
> PS Anyone know if Graham Thackrah is still around? I've lost contact
>
>
> _______________________________________________
> quattro mailing list
> quattro at audifans.com
> http://www.audifans.com/mailman/listinfo/quattro
> ---
> Watch this space for ads :)
>