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Error 2142 from ECU...
In message <34FC0279.AEFB8783@poboxes.com> Gerard writes:
> 1) can I remove the knock sensor and drive without it until I find
> a replacement?
You'd probably get other codes.
> 2) bad wiring, would that be mostly that inside the engine bay?
On a single-wire sensor, it also includes the infamous earth returns to the
inlet manifold and their hidden splice. Check all the wires identified in the
ECU wiring as chassis grounds for low resistance to the manifold.
> 3) can I use just a normal proper sized spanner to remove the sensor?
> Do I have to put it back on at some specific torque setting?
Some are 10Nm, some 20Nm.
> 4) can I just use a normal degreasing agent such as Kleen Green to clean
> behind the sensor or clean the entire sensor?
I use wire wool.
> I needed to ask #3 as I don't have a torque wrench that can handle that
> workspace on the car, very awkward indeed.
Tsk, tsk. Call yourself a shade tree mechanic?
UK Audi [ur-]quattro Owners Club