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[Petter]

I have now tried to connect an OBD2 to the car, and it communicates with the ECU.
However it didn't find any fault codes, but I did run the erase sequence anyway. And disconnected the battery from the car.
I thougth I will leave it like this for at least 24 hours.
One question.. will there be any voltage on the fuelpump when the ignition is turned on, or will this voltage come when the ECU gets signal form Crank Sensor?
Petter

[Andy A]

Have you tried both keys?

[Petter]

yepp all 3 of them...
Petter

[Andy A]

Thats a strange problem you have there. Good luck with it.

[terry paget]

Hi Petter, sorry about your dead Omega. 12 days and still no life. Do not despair. there is much wisdom on this forum.

Have you checked for fuel supply and spark at plug when cranking engine? If either is absent, fault is either dead crank sensor (most likely), dead ECU of wiring loom fault. Or possibly water in fuel.

[05omegav6]

A long shot, but when my ecu temperature sensor failed, the car wouldn't start unless you removed fuse 18.

This was because the temperature sensor was telling the ecu that it was -30°C, so it was flooding the engine. Without the fuse, the engine was able to start and run, but only briefly.

The other thing is fuel level vs the exact position of the car. If on any kind of slope, you'll need at least a quarter tank on the gauge

[omegod]

Fuel pressure check via schrader valve???

[Petter]

status tonight: I put on some more fuel so now there are at least 40 liters. 
I measured the voltage at fuse 18 (fuelpump) while turning ignition and it is 12V , so the fuelpump should get power.
When I checked the sparkplugs I noticed that there were no pressure in the fuel line and the sparkplugs were all dry and clean.
thinking of it I just remembered that when I parked the car there were some clonking sound from the rear end of the car,  ???could there be something wrong with the fuelpump? how do I check that? 

Petter from Norway

[05omegav6]

Fuel pump test is easy

Give the tank a couple of thumps from underneath whilst an assistant tries to start the car... if it fires then you need a new pump...

[terry paget]

Take off the fuel feed pipe at the engine end, point it into a cup, and have someone turn the ignition key. Cup should fill with fuel.

[05omegav6]

That's messy... and confirms nothing other than that the pump is capable of pumping

Had a 2.0 efi Granada which had a weak pump, fuel was getting to the fuel fail, but at about half the required pressure...

That Petter has power to the pump and dry plugs suggests that the pump may indeed be dead

[zirk]

To the best of my Knowledge, on a 2.6 and 3.2 fuel pump relay is fed from the ECU while cranking, unlike the non DBW through Ing. switch on.

Im 90% convinced if its not a faulty replacement Crank Sensor, which is fitted, then Petter has a faulty over night ECU problem. 

[Kevin Wood]

I think the 2.6/3.2 also prime the fuel pump for a couple of seconds when the ignition is switched on whereas the 2.5/3.0 only start the pump when they see input from the crank sensor.

Also, with input from the crank sensor, the gauges on the dashboard "bounce" when you start cranking the engine. If there is no input from the crank sensor this doesn't happen.

[Andy A]

I had a similar problem and found out it was the fuel filter. Over time it blocked and was starving the engine of fuel. I would check the fuel pump first and then the fuel filter Petter.

[Petter]

After several hours in aquard positions I managed to change the fuelfilter.
Then I tried to start the engine. It startes but runs very porly, so I gues the fuelpump is gone. I ordered a new one from autodeler.co.no .I got 77% discount. 
Will keep you updated...
Petter from Norway