Re: Stumper. WTF. New one to me. Anyone?

["Mark Madison" <markie@proaxis.com>]

I had similar symptoms on my car.
this is what I found.

on one of my cars.  84 GTI I had a cut out
problem that finally linked itself to the ignition
control module.  rev the motor up when the car
is hot and then let it off to idle and it would die
sometimes I could rev the car up and it would die
and come back on   it was really bizzarre.
it was the module, ran the bentley tests.. and it
was bad bad bad.

my current 85 gti HAD a cut off problem in the fuel
system.  somehow the fuel pump would cut off
from time to time.. but it also affected at startup.
don't know if that is similar to what you have but its
worth looking into.  it was my fuel pump that was 
going out.  replaced it and now its fixed.

I'd say that the fuel pump relay might be causing this
but if you already swapped it with a known good one.
then it should've fixed it.

Your problem sounds electrical indeed.
those pops are probably the car firing with flooded 
cylinders.
hhmmm.

I'd say get it to shut off again with someone around
and check for spark.

HTH

Mark

-----Original Message-----
From: Shawn C Meze <skerocdriver@juno.com>
To: scirocco-L@scirocco.org <scirocco-L@scirocco.org>
Date: Wednesday, May 12, 1999 4:37 PM
Subject: Stumper. WTF. New one to me. Anyone?


>Heres my newest dilemma that's been in the works for about 3 weeks now. 
>
>Driving down the freeway, (Usually 20 miles or more.) exit the freeway
>and while on surface streets the car shuts off. 
>Its also happened to me on the freeway. Cuts out like its got water in
>the fuel. Clears out and runs fine. (Well, as fine as it can run with 2
>bent exhaust valves. The new head gets picked up on friday.)
>Its recently happened to me while pulling into a parking spot. I can
>crank and crank and it wont start. The tach doesn't move, usually the
>tach will bounce slightly when you crank it over. Nadda. 
>
>Symptoms:
>
>Tach drops to zero.
>Immediate loss of power.
>Power loss id usually for .5-2 seconds but it usually keeps on running. 
>
>
>Tach drops to zero- That tells me that the ignition is cutting out. I
>cant really hear the fuel pump so I cant say if its running or not. I say
>the fuel pump is running because it runs again after a second or two and
>most of the time there is a loud as a gunshot -pop-, sometimes 2 pops in
>quick successions.
>
>I replaced the fuel pump relay and it didn't help. Then I used my trusty
>jumper wire and it started. I think that was quite by accident. I put in
>the old relay for my uneventful trip home. However when I got to the
>driveway and went to restart the car, it wouldn't. Reinstalled the jumper
>wire (I could hear the pump run) but it didn't start. Messed with the
>coil wires. Nadda. Just let it sit for a few minutes and it started up
>again. 
>
>Is this the coil going bad? Maybe its getting hot enough for it to shut
>off? Dunno. 
>I disconnected my rev limiter and my coil amp thinking one of the two
>might be causing the problem. I get the feeling its possibly the coil,
>but probably not. Or its the ignition brain. One of the two. 
>
>Ideas?
>
>
>              Shawn Meze
>86' Jetta GLi           82' Scirocco GTi
>The Fastest, Quickest, Cleanest and
>best looking Scirocco in all of San Diego!
>http://www.Geocities.com/MotorCity/Speedway/1308/index.htm
>
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