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Re: Fire went out!

Phil, did not know that.  Thought the sensor re-established the timing
sequence each revolution.  I think now I'm looking at multiple problems.
Although I used Stabilant on that ground over the weekend I'll look at it

Thanks, Gross

-----Original Message-----
From: Phil Payne <quk@isham-research.demon.co.uk>
To: scruggs@mbay.net <scruggs@mbay.net>
Cc: quattro@coimbra.ans.net <quattro@coimbra.ans.net>
Date: Wednesday, February 17, 1999 1:18 AM
Subject: Re: Fire went out!

>In message <001a01be5a14$459cc3e0$27ee37ce@oemcomputer> "Janet Scruggs"
>> I need from the list a few BTDTs regarding the Hall effect stuff.  The
>> housing on the side of the distributor (into which the three-pin
>> fits) is loose and has been secured with a zip tie by a previous
>> Is this a trouble spot?  Connections _seem_ to be made and plug clicks
>> nicely into housing.
>A dead Hall sensor will not kill a running 5000 engine.  It will stop
>one _starting_, but once it's rotating and firing the Hall sensor is
>not used again.
>I suspect chassis grounds to engine - on the 200TQs I see (nearest
>thing to a 5000) they're attached to the back corner of the accelerator
>cable carrier plate on top of the inlet manifold.  Check the ends
>bolted to the engine, and the wires just inside the harness shroud.  Do
>not accept physical robustness as evidence of electrical function.
>Scott Mockry's diagnostic pages include a description of pulling codes
>on engines that won't start - five seconds on the starter, etc.
>If the Hall sensor is defective, it will store a code.  This is the best
>way to diagnose it, since it includes all the wiring to and from the
>ECU as well as the unit itself.
> Phil Payne
> Phone: 0385 302803   Fax: 01536 723021
> (The contents of this post will _NOT_ appear in the UK Newsletter.)