S50, engine starts and then shuts down

[tuttifrutti]

As topic, i have put a 94model s50b30 into my e30 and i drove it for about 30 mins and then suddenly it just shut down. It does not have EWS.
Now when i start it, it can run for 1-5sec and just instantly shut down like it's completely out of gass or gets a "warning" that tells it to shut down.

I've tried to change the gas pump and i still got the problem. (i havent tried to run it manually, maybe that will solve the problem?)
The dynamo is working.
The battery is powered up.
The wireing is done right.
The enginge got enough ground (minus from the battery).
It's of course gas on the car.
The Fuel pipes, fuel hose's and filter is changed.
One of the relay's is making some wierd sounds, its number 2 in this link:

http://bmwfans.info/parts/catalog/E36/Coupe/Europe/M3-S50/LHD/M/1994/february/browse/engine_electrical_system/relay_motor/

So anybody know what the problem is?
Regards Steffen

[BM5W]

Double check the feed and return fuel lines.

[e30s50dan]

Diddo. Get a fuel Gage check pressure. Check spark Trust me. It's something easy just have to put your finger on it. Gud luk

[tuttifrutti]

Ok engine works now, it was the relay that i talked about.
But now i got a new problem.
Engine does not go as well as it should, it does not accelerate much more then a stock 325 e30.
What can it be?
The air flow sensor?
Vanos?

I got the wideband and it shows about 14-15 when the engine is on and when i give it gas it goes to about 12.
Cant remember 100% but this is about what's right.

[tuttifrutti]

Fixed this aswell :)
Does anyone know if it works with an ordanary diagnosis with this enginge?

[Edev]

Well you should state how you fixed your issues so if someone has a similar issue in the future, they can search and find the answer, rather than asking this same exact question.

Also, make your questions more clear. But congrats on figuring it out!

[flyboyx]

my advice to you and anyone else that does a swap: make your diagnostic port work, then go invest 150.00 in a peake scanner or equivalent. So far, I have yet to see an engine with no check engine light issues that doesn't run.

[tuttifrutti]

It was simply the gas pump that was broken due to bad contact with +.