Fuel Pump Relay question

[Huw Powell]

> I'm not really thinking it's the relay. 

But you really should eliminate it as the problem - set up a jumper and 
try using the car.

Your ISV turned out not to be the culprit, since with it disconnected 
the car still died.

I know this is a pain since your car keeps half-stranding you, but 
ideally you would "test" parts one at a time, eventually you (hopefully) 
will reduce the problem to one thing.

Here is something you can try, as well: hook up a light bulb (carefully) 
to the fuel pump connections under the back seat.  Put it where you can 
see it while driving.

If the light goes out the instant the car dies, you know that something 
is making the FPR turn off.  If it doesn't go out until the engine spins 
down, the trouble is elsewhere.  (light should also come on while cranking)

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/