VOLVO S40 1.9 Diesel 1999 Engine Shuts Off While Driving: Causes and Solutions for Error 4411

Hey,
I have a problem with the Volvo S40 1.9 Disel 1999.
For some time the car goes out while driving, the engine stops working, it doesn't matter:
- turnover height,
- this happens both at ease and in running,
-speed,
- I'm going straight, up or down, going out.
Most often I have no problems firing the car immediately (50 times, as it happened to me, maybe 5 times did not start immediately just after pulling out and putting the key back to the ignition), although if I do not wait about 5 minutes, after a few kilometers it goes out again.
Initially, I thought that maybe the mechanic had changed the fuel filter and connected it to the computer, two errors appeared:
4423 - Discontinuous Immobilizer
4411 - discontinuous fuel cut off
deleted them, and drove a few kilometers went out again. after reconnecting to the computer, only an error popped up
4411 - discontinuous fuel cut off
And here is my question
What could it be? Has any of you happened?

First of all, check the tightness of the fuel system - manual pump at the fuel filter, return lines from injections, injections only, injection pump - there likes to be leaking
Secondly, check the sagging of the dragon on the fuel pump in the tank

What fuel pump in the tank? Start the car and move the bundle of wires going to the injection pump.

Normal pump that is in the tank

There is no pump there.

And this is strange, what is then located on the rear sofa
/ foto borrowed from the volvo forum /

[IMG] http://i1.fmix.pl/fmi448/f0237ad60013d5845933f383 [/ IMG]

ignacent wrote:

And this is strange, what is then located on the rear sofa
/ foto borrowed from the volvo forum /

[IMG] http://i1.fmix.pl/fmi448/f0237ad60013d5845933f383 [/ IMG]

Fuel level float, supply line and excess fuel.
As for the fault, either the damaged harness to the quenching solenoid valve or the solenoid valve to be replaced.

Ok thanks for the answers The fuel system is ok, the immobilizer is to blame

Hello. I have identical symptoms in the xc90 car goes out regardless of the conditions sometimes it is rare that I have to pull in to insert the keys. I went to two electricians and they told me that it can't be immo because immo won't turn off the car while driving. There are no errors. Injections and the whole installation are checked and nothing. The car sometimes goes out. My question is / what was wrong with the immo that was turning off your engine? How did you fix it?