Bad Hall Effect Sender/ Ignition Switch?---FIXED

[L DC]

I swapped the distributor out of the '87 QSW into the
'85 QSW and that fixed the no spark problem. Culprit
was the hall effect sender on the '85 QSW.


-Regards,

Louis



--- L DC <ldc007usa at yahoo.com> wrote:

> Yesterday, I stopped for gas on my way home from
> work,
> even though I had a little more than 1/2 tank. Car
> in
> question is an ’85 VW QSW, JT engine code--same as
> Audi 4KQ.
> 
> I filled gas tank and then started engine.
> 
> While at idle, I proceeded to place into memory
> radio
> stations since the stereo the car boasts (from a
> Toyota; don’t ask bcause I don’t know) does not keep
> memory saved once engine is turned off.
> 
> Anyway, a minute or so later while idling in the gas
> station (still next to the pump), the engine just
> quit.
> 
> No weird noises, no sputtering, no hesitation, just
> a
> clean and fast shutdown as if I turned ignition off.
> 
> Tried many times to start engine to no avail.
> 
> My first thought was a clogged fuel line.
> 
> Then, I did a quick spark test while cranking and
> nothing..NO SPARK!!!
> 
> Left car at gas station 50 miles from home and this
> morning I took a look at my other running '87 QSW
> (parked, awaiting for a hub from a lister) to
> compared
> against the '85.
> 
> On the '87, I disconnected the ignition wire (at the
> dizzy cap end) that runs from the dizzy cap to the
> ignition coil and cranked the engine and I got a big
> spark.
> 
> On the '85, the same test yielded NO spark.
> 
> So, I took the ignition coil and ignition module out
> of the '87 and swapped them into the '85 and still,
> no
> spark. WTF??
> 
> I'm suspecting a bad hall sending sensor in the
> dizzy
> or ignition switch.
> 
> Later, I will R&R the ignition switch and see if
> that
> fixes the problem. If not, I will also swap the
> dizzy
> out of the '87 into the '85 QSW and see if that
> fixes
> the no spark problem.
> 
> What else could cause the no spark problem?
> 
> A severed wire between hall sending sensor and
> ignition module and/or ignition switch?
> 
> The car cranks fine and timing is right on the
> money.
> Remember, it was running nice and smooth and then it
> just quit out of the blue.
> 
> What do you guys think?
> 
> BTW, this car does not boast a timing reference
> sensor, thank GOD.
> 
> Thanks in advance,
> 
> -Louis
> 
> 
> 
>  
>
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