[V8] Poor running Audi V8

[Dave Saad]

To test this out of the car, you are going to need a 5 volt power  
supply and the wiring diagram.  Hook up the +/- 5 volts to the right  
pins, and connect the voltmeter to ground and signal out and as you  
spin the distributor, you should see the meter go from near zero  
volts to near 5 volts.

Hooking it up wrong will certainly release the all important "smoke"  
from deep inside the hall switch - rendering it definitely dead.

As I recall, the sensor is near impossible to replace too - because  
you would first have to find a replacement, and second have to press  
apart the distributor. Unless you have a friend at the manufacturer,  
neither of these is likely to be possible.

Not to say you can't kludge something together but it will not be easy.

Dave

On Oct 22, 2008, at 1:00 AM, urq wrote:

> I would recommend that you make measurements with the wiring loom
> disconnected (in fact I thought we were talking about a dizzy that  
> was not
> even in the car) … I assume that no reading means infinite  
> resistance …
> triple check by touching the two meter leads to the same dizzy pin and
> verify the resistance is -0- ohms … if that works you probably have  
> the open
> circuit that Scott suggested.
>
>
>
> Steve B
>
> San José, CA (USA)
>
>
>
>
>
> I did check with an ohmmeter today but didn't got any reading, does  
> it have
> to be connected to the cars wiring
> while testing?
>
> Chris
>
>
> urq skrev:
>
> You can do a basic check with an ohmmeter.  With the dizzy out of  
> the car
> you can power the thing up and verify that the sense output goes  
> from high
> to low as the rotor spins ...
>
> Should I need to reclaim my non-functional distributor I will  
> attempt a
> repair before replacing ... can't break it any worse is my motto ...
>
> Steve B
> San José, CA (USA)
>
> -----Original Message-----
>
> Just what I was afraid of.
> Is there a way to test the hall sender when the distributor is out of
> the car, I have a spare one from
> another engine?
>
> Chris
>
>
> Scott Phillips skrev:
>
>
> It looks like the hall sender is the culprit. It's not normally the
> wiring to the hall sender (on the passenger distributor), rather that
> the plug on the distributor has become brittle and the three (very)
> small wires under it break. I don't believe that the sender can be
> replaced without sourcing a replacement distributor.
>
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