engine stalls after start

[Timmo6]

My engine stalls after a start. I managed to start and do a few revolutions(2s) by playing with the variables in the VE-table and reqfuel, but then stalls no matter what I change in the afterstart settings.
I have a datalog and config file here: http://www.box.net/shared/upcms1pxcs
and here http://www.box.net/shared/6brf0yloow
Any solutions?
Thanks
Tim

[[email protected]]

Hi mate,

I see only an MSQ and a config there, what firmware are you running?

[Timmo6]

I'm running firmware 1.053 as its been a while I used the board again.

[[email protected]]

The VE table looks very lean - far too low at 10%

What is the needle on the Injector PW doing between the point of starting, and stalling?

[Timmo6]

not sure what the pw does before it stalls, but its very strange that when I download the config with the batfiles the tables are empty, there is nothing written in the tables notepad?

[[email protected]]

Are both files empty?  Are you letting the download window close itself?

[Timmo6]

EDIT/ OK now it downloads the tables as well
When I start the engine it runs for a 2 or 3 seconds on the cranking and afterstart settings but then dies.
here is the datalog: http://www.box.net/shared/6vhdasugwc

[Tcal]

I see in that log some huge spikes in rpm signal, sudden jumps to near 20000 rpm or over that.

[Timmo6]

Yeah I think I have a problem with the hallsensor setup. The vibrations of the engine are such that if the sensor is at<1mm of the trigger, it will touch the trigger and damage the sensor. If I put it at 1.1mm I have some trigger errors .
I am not sure this is the reason why the engine stalls at the same point everytime.

[[email protected]]

What trigger are you using?

Theres no way on earth that you're going to get the engine to run reliably.

Have you got your IACV connected up?  Take a look in the data log at IacDC and see what happens with it at the point where the car stops running.

[Timmo6]

First off all a little summary of my setup:

BMW 518i  4cyl m10b18 8valves
Ljet distributor
stock engine
stock 200cc injectors
vems controls 1 coil and 4 injectors individual, 1 fuelpump, lcd, firmware vemsMT1.0.53, 1widebandO2, IAT, MAP,...

The car has run perfectly with this setup previously, due to technical inspection I have removed the turbo and vems momentary.
In the meantime I have soldered the 30v Transient suppresion diode, made another wireharness, and soldered the AREF.
After this I tried to install the vems (first without turbo ) again but encounterd a few problems mainly due to the new harness.

I use a Hallsensor as primary trigger on a crankwheel with two teeth 180° apart. The sensor gave me some issues regarding not touching the trigger and not having triggererrors on the other side. But after a little manipulation it did its job perfectly!

As far as idle control I have only a mechanical electrical heated auxilary airvalve which is functioning as it should.
Now the engine dies after the afterstart. I played with the ve parameters but nothing changes???

[[email protected]]

If you've had to reduce the fuel to the levels I've seen on the tables you sent in the MSQ then there is a problem somewhere.

Adding the transient suppression diode means that the injectors close quicker, this means you need more fuel.

[Timmo6]

Ok I understand that, but when I initialy wanted to start the engine it smelled of excessive fuel and when cut back the cranking parameters it started but then died quickly.
I will try again tomorrow with more fuel in the ve table

[[email protected]]

Work on getting a clean cranking signal before you do much else.

[Timmo6]

Hi
I have a clean cranksignal now but no start?
Here is the cranking graph http://www.box.net/shared/1v1i73668k