chrisaudis8

I have an audi s8 2001 and i just replaced the cam chain tensioner and when i was putting it all back together I noticed that i have a broken wire on what I found to be called the Ignition Capacitor.

It has a single brown wire going to it and it is a small black rectangle sensor that mounts to the valve cover by the #4 coil.
Here is what it says in the order it is.
It is black with white writing


Beru
Germany
0 310 025 017
4.7µF 110v-
max. 120°C


i went to the audi dealerships parts guy who can get Audi parts and he couldnt find it on his computer.

Does anyone know the real part number or what I ask for to repalce it???

silverd2

There's one on each side (next to #5 also)...As I understand it, the purpose of the capacitors are to suppress radio noise.

I have the same year car ('01 A8 AUX engine) . Wiring diagram only shows a circuit going from the control side ground connection of one coil pack on each side of the engine to each capacitor and then directly to engine ground...all 8 coil packs share a common ground in the engine wiring harness. So don't know how it would have any connection to P0321 code: Ignition/distributor Engine speed input Circuit range/performance...speed sensor G28 on drivers side of transmission, close to engine flange. ...But really don't know, for sure.

You're right, though...the part # doesn't exist on the web or any parts list/supplier. The part is only mentioned in wiring diagrams and a few mentions on past forums on other models of Audi/VW . All those references agree that it's just a radio noise suppressor and not critical to any other system.

Is there anything left of the wire to temporarily reconnect it?

chrisaudis8

I managed to get the wire reconnected and the code went away. But its off to the dealer to get the immobilizer programmed then it should run again