1984 4k - no start

[Bares, Vittorio]

How does one test that?

 

Also, there was a suggestion to check the 12v at the coil - coil has 4
wires (2-green on one side, 2 black on the other connector) - which ones
deliver 12v to the coil? (they look awfully thin)

 

Vittorio -

________________________________

From: jlagnese at massed.net [mailto:jlagnese at massed.net] 
Sent: Tuesday, August 04, 2009 11:48 AM
To: Bares, Vittorio; quattro at audifans.com
Subject: Re: 1984 4k - no start

 

Check the spark control unit. Its piggybacked on the computer.
---- Original message ----

Date: Tue, 4 Aug 2009 10:42:59 -0400
From: "Bares, Vittorio" <Vittorio.Bares at nuance.com>
Subject: 1984 4k - no start
To: <quattro at audifans.com>
>So, has new wires, rotor, cap, plugs - was running fine - then about a
>week ago, while driving it - it just stopped running.
>
> 
>
>I cleaned the contacts on the coil - started again, but wasn't running
>well. Almost as if it was running on 4 cyl (it is a quattro 5cyl :-)).
I
>was trying to diagnose by pulling one sparkplug at a time while it was
>running, not much change when I did so - consistently for all 5 plug
>wires.
>
> 
>
>Pulled the plug on the temp sensor in the rear of the head - no diff.
>
>Pulled the plug on the sensor that is on the fuel distributor - no
diff.
>
> 
>
>This morning - no start...
>
> 
>
>No spark.
>
> 
>
>I'm thinking hall sensor??
>
> 
>
>Vittorio -
>
> 
>
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