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[dublin.jd]

My 98 R reg omega Idles very rough. (and stutters)

Once i reach 60-80 mph it also stars to judder but that seems to go if i put my foot down and drop a gear (kickdown)

I have replaced he coil pack, plugs, cleaned all breathers etc.

Nothing shows up on diagnostics.

Its a lovely car but I feel like driving it off the nearist bridge.

Please help.

Thanks

[ngrainqey]

the idling could be due to the icv (does it do it when warm or cold? )
also have the cleaner out the breather box thing at the rear of the drivers side cylinder bank?

[dublin.jd]

Sorry the car is An R reg (99) X25XEV Auto Elite

[dublin.jd]

the idling could be due to the icv (does it do it when warm or cold? )
also have the cleaner out the breather box thing at the rear of the drivers side cylinder bank?

Always after about 1 min after cold start.
Thanks

[ngrainqey]

Sorry the car is An R reg (99) X25XEV Auto Elite

does that mean its the newer plenium without icv and egr valve?

[dublin.jd]

Also cleaned breather box thing. The one with the naroow and fat hose

[ngrainqey]

sory.. egnore that last post lol!
could be either an airleak or icv problems
my 2.0 used to cut out when it was warm and that was a problem with the ecv and the breather pipe

[dublin.jd]

Sorry the car is An R reg (99) X25XEV Auto Elite

does that mean its the newer plenium without icv and egr valve?

No it has both egr and iacv

[ngrainqey]

giving your icv a good cleaning out with carb cleaner could do alot also when were the breathers last cleaned?

[dublin.jd]

giving your icv a good cleaning out with carb cleaner could do alot also when were the breathers last cleaned?

That worked on my 99 vectra 1600cc , i'll give it ago 2moro when its bright and you know. cheers mate

[ngrainqey]

ok matey
on my 2.0 i poured surgical spirit down the breather pipe (going to the icv) and it came up top trumps

[omegalad]

i have the same problem with my omega 2001 2.2 auto it idles rough after a min when cold or so but judders on accleration at times no real power... whats an icv and ecr? where do i find these so i can clean them?

bear in mind i have had o2 sensor replaced, throttle body cleaned MAF replaced.plugs too. due to get exhaust replaced big hole in it.


what ye reckon?

[cem_devecioglu]

giving your icv a good cleaning out with carb cleaner could do alot also when were the breathers last cleaned?

That worked on my 99 vectra 1600cc , i'll give it ago 2moro when its bright and you know. cheers mate

Change the o-rings under the plenum , they are very cheap and helps the idle..

[mike1]

I have a 1997 2.5 v6 Auto which cuts out at junctions from time to time.Its just had a full service and no codes showed up on the coding m/c.could this be the same problam you are on about?

[markey mark]

i have the same problem with my omega 2001 2.2 auto it idles rough after a min when cold or so but judders on accleration at times no real power... whats an icv and ecr? where do i find these so i can clean them?

bear in mind i have had o2 sensor replaced, throttle body cleaned MAF replaced.plugs too. due to get exhaust replaced big hole in it.

what ye reckon?

coil pack on yours matey i would say !