I am with Lost in Space on this......................Ign Coil!
(buy from dealer only or you will be sorry!!) lol
At least that is what it sounds like to me. The spark can't handle all of
that fuel!

JMHO
later,
dave
(One out of many daves)

"confused" <kdb800 (AT) verizon (DOT) net> wrote

Replaced coil with genuine VW. Engine acted like it wanted to start and
after about three tries it did. Thought great ran for about 3 minutes and
then quite. After a few tried it startted again. Great power, idled great.
moved some cars from behind. Got in put in reverse. Quit. Has started
once since then but ran so slow, I did not know it was possible for an
engine to run that slow and that smooth but did not dare try open the
throttle. All I am doing now is parts changing. Any ideas what could cause
it to just quit other than fuel. could the idle air control do this? I
know just grasping at straws.
"dave AKA vwdoc1" <vwdoc1 (AT) hotmail (DOT) com> wrote

In rec.autos.makers.vw.watercooled, confused wrote:

Looking back thru the thread, I don't see the fuel filter at the
engine mentioned. I would guess clogged fuel filter.

Replaced the filter and if was "heavy" compared to the new one, so I am sure
it had crap in it. Checked the screen on the pump, clean. Checked the fuel
in the tank, it did not seem to have any sediment or water.. Did that
before I tried a pump that was known to be good. Changed pump relay. Coil.
Seems too rich as I can smell fuel in garage after trying to start. I am
most likely going to have to have it towed to a garage that specializes in
VW but it bugs me after doing all this work and having it run great for a
few hours. If any other suggestions, please advise. Thanks.
"Tom's VR6" <no (AT) mail (DOT) please> wrote

Yes it might be more than one problem. Maybe the Coolant Temperature Sensor
for the fuel injection too. That might cause the engine to run rich too.
Yeah you could change that too as you guess what could be wrong. It is not
that expensive. ;-)

What happens when there is too much fuel not being
burned.....................damage to 02 sensor and cat. conv along with
debris on spark plugs.
What color is the exhaust? Does it smell rich and is it black?

So did the ign. coil make it better? If so that is a start and you can
cross that off your list of things that could be wrong! :-)

Check for any malfunction codes. Is it possible to read blinkcodes on the
1994s? Or do you have a scanner? Scanners help sooo much when you need to
find a solution to a problem!! ;-)

What would a malfunctioning MAF Sensor do? I have yet to see a bad one!
8^o
http://autorepair.about.com/library/a/1d/bl175d.htm

Also cleaning the throttle body carefully might help the low idle. At least
inspect it! ;-)

later,
dave
(One out of many daves)


"Tom's VR6" <no (AT) mail (DOT) please> wrote

The ignition coil seemed to make it a little better. (it ultimately started)
It ran if only for about 5 minutes. The exhaust did not seem rich when it
ran. No smoke, a little condensation, other than that seem fine. At one
point when running, it faltered for about 5 seconds, maybe less, but was at
about 2000 rpm and it did not have any power, but as quick as it started to
falter, it cleared up. Let it go to an idele. It idled great for a minute
or so and then just quit as before. Checked the torque on all the bolts on
the intake side and the plenum. Had cleaned and dried all the rubber intake
parts. I do not have a scanner and keep saying I am too old to be messing
with cars, so I do not buy one. On the odometer, when you first turn on the
key, rather than miles it looks like IN 02. Is that a code? I think I used
to know what that meant, but I seems to escape me.
"dave AKA vwdoc1" <vwdoc1 (AT) hotmail (DOT) com> wrote

IN 02 should be a reminder to service the vehicle.

Well the scanner could help you determine what is wrong.
Right now you are kinda guessing and that could be costly. Although when
you change or do something and you see an improvement then it is good! ;-)

A clogged cat may also cause issues, but you would get little
exhaust/pressure out of the tailpipe.
Engine vacuum would drop.

"confused" <kdb800 (AT) verizon (DOT) net> wrote

Update.

The problem was caused by a crankshaft timing belt sprocket what the keyway
was sheared off, gone, like it was never there. Of course, timing went
everywhere. Replaced but being convinced by the sound when it ran last,
that it bent every value in the head, I removed head and checked pistons,
heads looked undamaged, but could see marks where the pistons where struck.
Took head to a shop, they inspected it, checked tappet clearance, etc. Gave
it a good bill of health. I reinstalled it, car ran horrible. Seemed very
rich for almost a minute and tapped. Realized it just ran better and better
noticed that the tap was gone, as the lifters pumped up. Runs extremely
well when on the road driving. Stop at a light, it may lope a little and
may eventually run fine or it will lope with greater extremes and quit.

(Now I find out that this problem existed before the timing belt failed.
The solution was to keep the foot on the gas while stopped at a light. )

If you take it out of gear, it will smooth right out and run ok. Also if
the disconnect the AIT sensor, warm up the engine with a 5 mile drive, it
normally runs like it should. Does not like this cold weather until it is
driven. Steady when driving and steady when stopping or stopped. Dave, you
mentioned blink codes and reading these codes. I have borrowed a scanner
which I am told will read obd1 codes. I think that is what I need. Where
do you find the port that this scanner plugs into? Thanks again for your
help.


"dave AKA vwdoc1" <vwdoc1 (AT) hotmail (DOT) com> wrote

Found the port after reading a recent post on this forum. Thank you.
Scanner I borrowed, only does obd2 soooo Unless I start guessing at parts,
This problem needs a scanner, right?!?!
"confused" <kdb800 (AT) verizon (DOT) net> wrote

"confused" <kdb800 (AT) verizon (DOT) net> wrote

If it's a 1994 model as stated in your previous post and you have a "check
engine" light, you have OBD1. Don't need a scanner. Follow these
instructions:
http://www.gti-vr6.net/library/engin...ng_method.html