[V8] Hall Sensor [was cam speed sensor]
Buchholz, Steven
Steven.Buchholz at kla-tencor.com
Tue Dec 2 12:32:26 EST 2003
... good job of detailing the diagnostic process! The fact of the matter is
that Hall Senders do fail. I had the Hall Sender code on #344 until I
swapped the right distributor from #2's dead engine. I've heard others who
have had similar Hall Sender failures on V8s and other Audis (most I-5T's
have a Hall Sender in the distributor). I never really noticed any change
in the operation of the V8 after the dizzy swap ... just got rid of the
code.
Steve B.
San Jose, Kaleefohnia (USA)
>
> The sensor is not replaceable unless you have some fancy
> machine shop tools to
> take it apart and press it back together. (and the replacement part)
> The part is easily testable with a volt meter. I would remove
> the distributor
> both for a good inspection and to make testing easier.
> There is a section in the manual that describes in detail how
> to check it out
> but basically you have 5 volts supply to the unit (I think
> the two outer wires)
> and the center wire is signal. First verify supply voltage,
> then measure the
> signal wire while rotating the distributor shaft. It should
> switch from 5 volts
> to zero as you rotate the shaft. These sort of sensors are
> usually pretty
> robust. I would look hard at the wires and connectors for
> your problem.
>
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