Fw: No Start - 1987 5000CD Quattro Avant

[Dave Marshall]

Thanks for all your help people.

My problems, explained below, are due to a vacuum leak.  I found a couple of
leaks and can now get the car started although it is not running well.  I
will keep at it.

Dave

----- Original Message -----
From: "Dave Marshall" <autolit at bmts.com>
To: <quattro at audifans.com>
Sent: Saturday, March 30, 2002 8:07 AM
Subject: No Start - 1987 5000CD Quattro Avant


> 1987 Audi 5000CD Quattro Avant - 326,000 km
> Ontario, Canada
>
> I have searched through the archives and some excellent websites, but I
> cannot find any talk of my symptoms.
>
> A few weeks back, I started having syptoms of trouble on it's way.
>
> Before the car was fully warmed up, it would stall at the first stop sign.
> Initially it would start right up again and be OK for the day.
>
> Then the next step was that when it did this stalling it would not start
> right up.  It seemed like I was getting a bit of fuel, enough to make the
> engine fire a bit, but would just quit on me when I touched the gas pedal.
> I would have to sit there, in traffic, wait a few minutes, try to start,
no
> go, wait, try again and eventually the engine would fire and run perfectly
> all day.  It gave me the impression that a "sensor" of some kind was not
> getting the input it wanted and was not doing it's job.  Suddenly it would
> see what it wanted and way we go.  Pulling codes gave me no faults.
>
> This was intermittent.  I could go for days with no problems.
>
> Then one inconvenient Noon hour, I just couldn't get it to fire.  Same old
> story of the engine wanting to fire, but there must be this daxx sensor
not
> getting it's information.  Left the car in the snow storm and came back
next
> day.  Hard to start, but once again, suddenly she fired and ran like there
> had never been any problem.  No fault codes.
>
> Ran good for a couple of days.  Then suddenly no go.
>
> The last time I had trouble, I did the sit, wait, try again thing and
> finally got it to run, but this time I had to keep the RPM's over 2000
(3000
> was better) or it would quit on me.  I tried this while running down the
> road so I could bump start it when it quit.  Lots of fun driving through
the
> City this way.  :>)
>
> Now I can't get it to start at all.  I am sure that if I could try bump
> starting, it would run, but only at high RPM's.
>
> I tried pulling codes.  OK - 4444 every time.
>
> I can hear the fuel pump running, building pressure and shut off.  I have
> tried the fuse in the top of the fuel pump relay to make the pump stay on.
> I have checked the fuel filter and can blow through it easily.
>
> The spark plugs are bone dry.  If I drop some fuel in the intake, the
engine
> will fire and run this fuel through before quitting.
>
> I don't know where to go next.  I mentioned reading the archives.  Lots of
> talk about the engine misfiring at high RPM's and that most likely being a
> fuel pump problem, but high RPM is when my engine works best.
>
> Anybody been down this road before me?  I would appreciate your help.
>
> Thanks
>
> Dave Marshall
>