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[alan_rose]

hi all i was wondering if anybody can help, i did the paper clip test to my w reg 2litre 16v omega and the code 0340 came up.
the tickover is very low and it keeps trying to cut out when the engine is warm

cheers
alan

[Andy H]

The list of error codes here http://www.omegaowners.com/forum/index.php?topic=90583.0

lists it as

P0340       Camshaft Sensor Incorrect Signal

The 4 cylinder engines do seem to be prone to camshaft sensor failure. Replace it with a genuine Vauxhall/Opel sensor. The pattern ones don't seem to last 5 minutes.

The idle speed should be quite low (about 650rpm IIRC for a 4 cylinder). Fix the misfire and it will idle smoothly

[Andy B]

..... and the code 0340 came up.
the tickover is very low and it keeps trying to cut out when the engine is warm

cheers
alan

http://www.omegaowners.com/forum/index.php?topic=90583.0 ''cam shaft sensor incorrect''

 Erratic tickover ..... Is there an idle control valve  on the car? Could be that that's sticking Induction air leaks?

[alan_rose]

thanks all i have got hold of a idle motor and will fit it later tonight, if that dont work its the camshaft sensor.

cheers
alan

[RobG]

thanks all i have got hold of a idle motor and will fit it later tonight, if that dont work its the camshaft sensor.

cheers
alan

If it does work you`ve still got a fault code for the cam sensor

[alan_rose]

fitted the idle valve drove to work everything fine, come home everytime i stopped it cut out, did the paper clip test again and now code 0340 and 0100 comes up mass air sensor voltage high what does that mean, i would be greatful of any advice, i will be changing the came sensor this weekend

cheers
alan

[RobG]

fitted the idle valve drove to work everything fine, come home everytime i stopped it cut out, did the paper clip test again and now code 0340 and 0100 comes up mass air sensor voltage high what does that mean, i would be greatful of any advice, i will be changing the came sensor this weekend

cheers
alan

Change the cam sensor, (genuine only)

[Abiton]

Agree with Rob, both codes will probably be caused by the failing/failed cam sensor.  Buy a genuine one, from a Vauxhall dealership (none of the online spares shops sell genuine ones, though they try hard to give that impression).
PM or phone member andyc on here for the best price for a genuine one, he's a very helpful parts geezer at just such a Vx dealership.

If after you've got rid of the codes, you still have trouble with cutting out, it'll be in your interests to read and act upon this thread: http://www.omegaowners.com/forum/index.php?topic=90586.0

Now that you have a new idle valve you won't need to clean that out, but the small breather jet referred to in Grumpy's guide is also very important on the 2.0s. 

Good luck with it.

[alan_rose]

thanks for that lads, i will take your advice

[alan_rose]

replaced the cam sensor today (vauxhall one £60) started the car allowed it to reach temp, what a difference all better now.
the idle valve which i got from carspares lasted about 8 miles, so replaced it with the old one.
thanks to everyone for there help

cheers
alan

[TheBoy]

replaced the cam sensor today (vauxhall one £60) started the car allowed it to reach temp, what a difference all better now.
the idle valve which i got from carspares lasted about 8 miles, so replaced it with the old one.
thanks to everyone for there help

cheers
alan

Excellent