Firstly, Hi....read through the site and love the friendly nature and helpfull attitude shown by you guys. A lot of the info here has helped / will help me a lot...thx  

I do have a problem with my 1998 2.0 16v Auto........I have a miss that I just cant clear...firing well enough but missing on 1 (can't remember which one at the moment...doh!).
Plugs and leads all seem fine
Any suggestions as to where a Noob like me should start in trying to resolve this? without taking her into my local dealer and paying out my next months wages hehe.

Any suggestions would be much appreciated.

Where are you from? I've got a spare 2.0 DIS sat at home, you'd be welcome to swap it out and see if it cures it.

If you've got a spare DIS to try, that would be my next port of call if it's not firing on one plug, and you're sure leads and plugs are fine.

Try that, and post up the result....

well I got a mate down to give me a hand....trouble is that with me knowing very little, we tried various checks etc but never actually tackled the DIS (even though there are some great guides to this on the forum)
He suggests that it is a dodgy valve...personally I would rather try the DIS first...(he is a mechanic but I dont know if I can trust his knowledge as far as I can throw him...not when it comes to my Omega )

Could it be a valve? (car has done 113k) or should I just try the DIS first rather than taking the head off?

TheBoy wrote on 07. Jan 2007 at 21:06:


There's an even easier way. Get a timing light, and with the engine running, connect it to each HT lead in turn. If the light fails to flash on one of the leads.. then that lead has got no spark going to it's plug. If a plug is not firing, you should also be able to tell by the colour of the plug.

The DIS is a peice of cake, 4 torx bolts holding it on to a plate at the back of the head, and one connector.. ten min job.

As mentioned though, a compression test would also help with the diagnosis from this point, if it's not an ignition problem..

Ok guys...time to yell "HELP!!!!" again 

I did the paperclip test on my Omega today......(thx to the link on the site )

First problem is that (correct me if I am wrong please) it is a 1998 2.0 16v auto and therefore it is an Omega B 2.01 16V with Engine code X20XEV

Looking through the listing I should have a Siemens Simtec 56.0/56.1???
I should find a 10 pin connector?  Well I look under my steering wheel and find a 16 pin...yes I was confused. Ok, so I re read everything again and decide that maybe it could be a Simtec 56.5 (P Codes) and that maybe it was my error.
I short pins 2 and 4 and Diagnostics seem to work and the light flashes as described. I read the code and what do you know??? all it comes up with is a (0340) = Camshaft sensor.

Would I be right in presuming that I did the right check? and this is the code and problem?
I tried to clear the code, as per off and on 30 times allowing for setup etc each time but no joy.....maybe the sensor is knackered? Trouble is that I took this sensor off my other omega (donor) which I knew was working before I scrapped it. Are they easily damaged? or am I just unlucky?

Any thoughts or comments would be appreciated.

Thx 

bear in mind that a faulty DIS pack will NOT create a fault code. Crank or cam sensor? As a crank sensor error is normally reported if testing without the engine running ... try again with the engine running?

Erthe wrote on 11. Jan 2007 at 17:01:


Sounds to me like the test worked ok

Regards the borrowing off your donor chances are its an issue with the connector and hence why vx supply not only the sensor but also part of the loom with connector to be crimped in.

When my sensor went it put my car into limp mode and so accelleration was like pushing the car up a steep hill (Very hard going).

Hope this makes sense.