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Re: 83 Ur-Q - No Spark - Timing

Thanks Dave:

They apparently now believe that the timing is off and suspect that the cam
belt may have jumped a few teeth.  They have got it running, but as yet

If the timing belt needs to be replaced, is there any other preventive
maintenance that should be taken care of while it is open.  I seem to
remember that the oil or water pump is removed during this process?

John Corbs.
-----Original Message-----
From: Lawson, Dave <dlawson@ball.com>
To: quattro List <quattro@coimbra.ans.net>
Date: Thursday, March 19, 1998 9:29 AM
Subject: Re: 83 Ur-Q - No Spark

>> This is the good news.  The bad news is that everything they have
>tested =
>> so far appears fine other than one of the Reference sensors.  I have =
>> also suggested that they check the current input "15" at the back of
>the =
>> fuse box which has given problems before.
>You need both the reference sensors working to get the ur-q going. One
>is the reference mark sensor and on the ur-q flywheel marks approx 60
>degree BTDC and the ECU uses this guy the begin the timing/spark cycle.
>The other counts flywheel teeth so it knows where it is relative to the
>ref mark sensor.
>Dave Lawson