hi to all ,i wonder if anyone can help me.just spent 2 hours in the wind and rain checking my plugs ,put everything back together ,car staerted fine ,i went under the bonnet to rev the engine there to check my exhhaust manifold,then the car just cut out and now will not start,ive got an omega 2.5v6 m reg
regards stuart

Maybe the wind & rain has got in somewhere it shouldn't have?
As someone elses signature says, have you checked the fuses?
Assuming it's turning over & not firing - petrol? OR - Have you moved some wires around/loosened a connector?

its just strange as it ran for about 40 seconds then just stopped,so it fired up ok,it seems like a fuel problem ,but got fuel ,any ideas on how to check fuel is pumping,is itpossible immobiliser,the only wires disconnected were in the loom above the spark plugs on passenger side of engine

Do a paperclip test...

kjon51 wrote on 13. Jan 2007 at 15:18:

Maybe the wind & rain has got in somewhere it shouldn't have? As someone elses signature says, have you checked the fuses? Assuming it's turning over & not firing - petrol? OR - Have you moved some wires around/loosened a connector?

Fuse for fuel is 20a - this guide will show you its location http://www.omegaowners.com/forum/YaBB.pl?num=1161602008 - , but takes a lot to blow, but car would just die as you've described so it's possible.  Worth a try - 20 sec job.  :y

checked all fuses everything ok .any advice on the electrics i disconnected in above the plugs on passenger side of engine 3 plugs all together ,1 is connected to a bosch cylindrical unit dont know what that is though it is mounted in a rubber holder.

dragon33 wrote on 13. Jan 2007 at 21:26:

checked all fuses everything ok .any advice on the electrics i disconnected in above the plugs on passenger side of engine 3 plugs all together ,1 is connected to a bosch cylindrical unit dont know what that is though it is mounted in a rubber holder.

That's the idle control valve (IVC). Check that the plug is fully in because if not the engine will die and not start unless you give it a tiny bit on the accelerator.

thanks buddy will check it out tomorrow

cleaned idle conrol valve still the same problem.checked wires in loom and now she is firing but still wont fire up,think i got a connection problem to icv but what symptoms would this cause any ideas???????

Did you do the paperclip test, if so what were the results?

havent done paperclip test yet,got up this morning ,checked all wires i disturbed for open circuit all ok,then car started fine ,so i still dont know why,only had this car for two weeks and now i got  an exhaust noise ,i think exhaust pipes from engine are blowing any ideas on cost

Sounds like you have a dodgy connection waiting for the next dark wet cold night.
Do a paper clip check and post the results, there should be fault codes stored to point you to which device or sensor was at fault.

Where is the exhaust noise coming from?
If its in the engine bay its most likely to be exhaust manifold gaskets or possibly a warped or cracked manifold, otherwise work back along the system. The mid boxes can sound noisy if the internal baffles have rotted out, there wont be any external blow but may rattle if thumped by hand.

definitely engine bay just sounds rough

exhaust noise form engine bay....

might it be EGR related??  

it's precisely what I've just had fixed.....      all of a sudden the engine ran lumpy and threatened to stall at tick over.... and the exhaust sounded bad at the front....    

turned out the EGR had "failed dramatically" .... replaced, and all sorted.....

that sounds like it ,how much did that dent your funds?

The EGR itself is £179 at trade from Vauxhall. (or at least, that's what i just paid for one)    labour is less than half an hour....


alternatively you could try getting one from a scrappy or used parts dealer./.


I'm told you can also simply blank off the connection point with a DIY fabricated metal plate and gasket....   at least to see if this makes any difference to how the thing runs...   but I've never tried this.....   my policy being that if it breaks, I try and get a new one fitted rather than dick about with bodge jobs and string.....

that said...  sometimes that could mean spending more than the car is worth......  at which point, the used part dealers become much more attractive options.