[Biturbos4] Engine Cut-Out...

Mark Rosenkrantz speedracer.mark at gmail.com
Wed May 13 08:27:38 PDT 2009

Could be a host of mechanical or electrical issues.  Of course, VAG-COM is
the place to start.

A quick list:
Ignition Switch
Fried computer
Fuel relay or pump
Clogged fuel system (almost a 0 chance, considering your symptoms)
Cam Position Sensor
Crank Position Sensor
Unholy huge air leak
etc.  (I'm sure I forgot some obvious ones which the list will correct, but
this covers me.  LOL)

Given your symptoms so far, I'd look at crank and cam sensors.  They are
known to fail and are easy to replace.  I have a spare manual transmission
'00 S4 ECU if you needed one to test with later on.  Hope to see you
sometime this summer!

Mark Rosenkrantz

On Wed, May 13, 2009 at 8:56 AM, Greg Amy <grega at pobox.com> wrote:

> New prob on the '00 S4: engine dies randomly.
> It started a couple of weeks ago; I was cruising down the highway and
> suddenly the engine cut out and the tach went to zero, then just as quickly
> it came back. No CEL, and no codes with my generic code reader (yep, I've
> gone 123k without a VAG-COM; ordering on this morning). Ran fine for a week
> or so, then did the same cut out-back in once last week. Same thing: no CEL,
> no code.
> Yesterday, however, on the way home from work it simply died. No warning,
> just ignition dead, didn't come back. Key was still on, and there was pwoer
> to the dash; fortunately I was on city streets so I simply coasted to a
> stop. I was so surprised by it that I neglected to hit the clutch and a few
> seconds later the low oil pressure warning came on.
> I tried to restart it; it turned over (starter and battery are good) but
> wouldn't start. Third time it "caught" then immediately died, then wouldn't
> start again. Finally, for whatever reason I decided to turn the key on and
> let it sit for about 5 seconds, then when I hit the start it ran. But, as I
> drove away it died again and I was stuck for another 2-3 minutes trying to
> start it.
> Then, when I tried to leave the house today, same problem: no start, but
> when I let it sit with the key on for 5 seconds or so it would start (could
> just be a coincidence. And it ran fine all the way to work...
> As noted, I'm ordering a VAG-COM this morning. However, until I get that
> I'm looking for any similar experiences that anyone's had with this?
> Greg Amy
> Middletown, CT
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