Desperation... any more ideas (16V problems)?

[rhock99@epix.net (Ryan H)]

OK, when you use a test LED, did you use the resistor as the Bentley says?  If so, what are the specs on it?

OK, so I'm going to do the following when I next go home:
a.) check for telltale signs of woodruff key puree. ;)
b.) LED test the knock box
c.) check rpm timing advance

The only problem I see (for 'c'), is that my problem comes and goes... so it may seem to advance with rpm, but only cause it's running good at the time.

So, since my problem comes and goes, can I rule out anything mechanical (stuck lifter, bent valve, etc.)?  The engine was rebuilt 50,000 miles ago.


> me and tobias both had the woodruff key issue. if that's the case, the cam 
> timing will change from the flywheel timing. just put your flywheel at TDC 
> and see where the cam mark lines up. this doesn't really match your symptoms 
> though. have you fault tested the knock box? btw, since your engine changes 
> by unplugging the test harness, you're not in true limp mode as far as your 
> cie-e box is concerned (you could still be having knock box probs though). 
> also, this indicates that your dpr is working.  next steps i'd take would be 
> a) check knock box fault codes with led light, and b) see if timing advances 
> appropriately when the rpms increase (bentley has a procedure for this).
> 
> -Michael Abatzis
> Hotlanta! GA
> 1988 Scirocco 2L 16v RIP-->parting, finally taking orders: 
> www.learnlink.emory.edu/~mabatzi/mikes_page1.html
> 1987 Scirocco 2L 16v...
> 
> 
> 
> 
> >From: Ryan H <rhock99@epix.net>
> >To: ian Butler <ian@bluemoon.hplx.net>
> >CC: scirocco-l@scirocco.org
> >Subject: Re: Desperation... any more ideas (16V problems)?
> >Date: Wed, 19 Feb 2003 14:22:25 -0500
> >
> >ian: nice signature. :D
> >
> >Anyway guys, I never tried running with the DPR unplugged, but I have a 
> >test harness in place...  I plug the test leads together when I'm not 
> >testing, but if I disconnect them, the car will stall if I don't give it 
> >throttle input.  So I guess that means it does run different without the 
> >DPR plugged in...
> >
> >BIG question for everyone:  even though the DPR says 7 mA, is it possible 
> >that the DPR isn't controlling for that amount, just the signal coming in 
> >says it is?   See what I'm saying - correct input, wrong output.
> >
> >I may take off the crank sprocket and see if my woodruff key still exists, 
> >another member (Toby?) had timing going everywhere because of this... my 
> >symptoms are that of the timing bouncing all around.  But why only when the 
> >car is warm?   And why the stuttering now?   Grrr, who wants a 16V???  Free 
> >gas included. ;)
> >
> >My offer still stands for anyone who wants to come help me figure it out...
> >
> >Later guys...
> >
> >
> >----------------------
> >I'll fix my car, even if I have to replace every part in it... and since 
> >the problem will be the last part I replace, I'll have a brand new car when 
> >I'm done!
> >
> >
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> 
> 
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