Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Jan Suhr on 19 January 2012, 08:58:40

Title: Dead, will not fire
Post by: Jan Suhr on 19 January 2012, 08:58:40

My 2001 Omega 2.2L XZ have died on me.

When I tried to start it it fired up for a few seconds and instantly died. After that it will not fire, it cranks and it sounds like it is spinning easily, after a while I can feel the smell of petrol. From that I assume it's getting fuel. There is no hint of trying to fire.

From my code reader I get nothing, no codes at all. I suspect that some sensor has gone bad but it is difficult when you can't get any codes to see which one it is.

So, what can it be? Cranksensor? Camsensor? Ignitionmodule?

Thanks

Jan

Title: Re: Dead, will not fire
Post by: freecall666 on 19 January 2012, 09:54:21

hi have you checked the engine bay fuses, if no engine codes maybe another fault. has it been playing up before this.

Title: Re: Dead, will not fire
Post by: millwall on 19 January 2012, 10:39:50

i think im right in saying a failed cranksensor does not always show a code :y

Title: Re: Dead, will not fire
Post by: Kevin Wood on 19 January 2012, 10:47:51

Quote from: millwall on 19 January 2012, 10:39:50

i think im right in saying a failed cranksensor does not always show a code :y

Usually a 4 pot will start if either the crank or cam sensors have failed, but not both.

Might be worth flooring the accelerator and cranking it.. just in case it's flooded.

Title: Re: Dead, will not fire
Post by: Jan Suhr on 25 January 2012, 19:19:30

I haven't done anything to this yet, I wanted to check with an Opel mechanic I know who have helped me out before.

He said that a crank sensor would definitely give a error code. He proposed the temp-sensor, he have had some experiences were the temp sensor had given this kind of behavior and it didn't show any codes.

Since I can smell petrol when I try to crank and it do some lame tries to fire I was advised to pull the plugs and check if it runs rich during cranking, if so I would need to change the temp-sensor.

My temp gauge stopped working about half a year ago, could this have something to do with this. I know some engines have two different temp sensors, one for the PCM and one for the gauge.


Any opinions on this theory?


Thanks

Jan

Title: Re: Dead, will not fire
Post by: Michael2.6 on 25 January 2012, 20:31:37

When you removed the plugs were there wet with petrol

Try cranking the engine over with the plugs out to get rid of any waste petrol

Title: Re: Dead, will not fire
Post by: Jan Suhr on 25 January 2012, 22:10:41

I haven't done that yet, will do tomorrow.

Jan

Title: Re: Dead, will not fire
Post by: adey2 on 26 January 2012, 02:34:30

you thought about checking that the cam belt hasnt snapped, just if turning quickly sounds like little or no compression

Title: Re: Dead, will not fire
Post by: freecall666 on 26 January 2012, 04:47:38

Quote from: adey2 on 26 January 2012, 02:34:30

you thought about checking that the cam belt hasnt snapped, just if turning quickly sounds like little or no compression

would bang about would hear it.

Title: Re: Dead, will not fire
Post by: Jan Suhr on 26 January 2012, 07:50:16

Quote from: adey2 on 26 January 2012, 02:34:30

you thought about checking that the cam belt hasnt snapped, just if turning quickly sounds like little or no compression

I did change the belt just a few months ago and engine turns around with out any bad noise.

Jan

Title: Re: Dead, will not fire
Post by: Jan Suhr on 27 February 2012, 15:55:15

I have not yet got it to start, cold weather and other things has been more important.

Anyway I did replace the cranksensor last week but that didn't solve the problem, same situatioin  :'(

I got a tip from an experienced Opel mechanic that said that it could also be the ECU tempsensor so I did remove it today.

I pulled out my Ohm-meter to check the sensor and at room temperature it reads 2.3 kOhm, I don't know it that should be correct.

Does anyone know how much it would read?

Thanks

Jan

Title: Re: Dead, will not fire
Post by: adey2 on 27 February 2012, 16:20:42

i just bought a vectra, same symptoms but it the cam chain rather then belt, it was just flooded and now purrs like a kitten

Title: Re: Dead, will not fire
Post by: tealeaf10 on 27 February 2012, 18:11:56

have you checked for a spark ??? go to basic checks first     

Title: Re: Dead, will not fire
Post by: Jan Suhr on 27 February 2012, 18:23:35

Quote from: tealeaf10 on 27 February 2012, 18:11:56

have you checked for a spark ??? go to basic checks first     

Wouldn't that give an error code? I mean if there is something wrong with the coilpack.

Jan

Title: Re: Dead, will not fire
Post by: tealeaf10 on 27 February 2012, 20:55:33

may be not could be immobiliser         if you got spark and fuel should start :o

Title: Re: Dead, will not fire
Post by: Jan Suhr on 01 March 2012, 09:48:31

This is a never ending story  :'(

I have now changed the temp sensor for the ECU but it didn't do any difference.

There is how ever a few things I have noticed that I don't think I've seen before.

When disconnecting the battery, the ground terminal sparks. I can't recall that happening before and it isn't supposed to do that really I guess.

When cranking it on the starter the instruments behave strangely too, in a way I can't remember seeing before either. First when I turn on the ignition the tach and speedo needles jump, then when cranking they move slowly upwards until I stop cranking, then they stay where they reached for a second and then jumps back to sleep position.

I am starting to think that there is some electrical problem, maybe the alternator??

Jan