Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: DaveL on 03 October 2007, 18:22:22
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Help....The subject says it all. Been trying to sort a egr problem with my mega. Usual probs, lumpy running on start up. Not reving then all of a sudden clears.
Had fault read by local dealer code showing egr. Takes egr off and cleaned with Mr Muscle. Egr back on motor and engine revs and starts o.k.
After a run of about 5 miles engine warmed up fault light comes on along with check auto gearbox. Stopped car switched off then on engine and every thing o.k.
Then engine looses power, and car with spanner comes on. Take Egr off again and this time make a blanking plate. Put Egr back on with new plate. Car starts o.k. from cold with no hunting but after 2 mins auto gearbox check comes on. :'( :'(
Now can some of the more knowledgeable ones explain why this could be? One of my thoughts is that fuel is getting past the injectors causing a fuelling problem. If I set off straight away, after starting the engine, the check light does not come on.
Would be interested on others thoughts.
DaveL
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Is your TPS securely plugged in?
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Thanks for the PM James. I should have said my motor is a 2.2 petrol. I thought the Throttle Posistion Sensor or the tick over was done by tech2.
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Could be a failing crank sensor too perhaps?
Any trouble codes stored?
Kevin
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Could be a failing crank sensor too perhaps?
Any trouble codes stored?
Kevin
Not when the dealer did the reading. Just showing egr.
Dave
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Thanks for the PM James. I should have said my motor is a 2.2 petrol. I thought the Throttle Posistion Sensor or the tick over was done by tech2.
In that case, the TPS is on the side of the butterfly
TPS will cause the gearbox to limp if unplugged...
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Thanks for the PM James. I should have said my motor is a 2.2 petrol. I thought the Throttle Posistion Sensor or the tick over was done by tech2.
In that case, the TPS is on the side of the butterfly
TPS will cause the gearbox to limp if unplugged...
Even on fly by wire?
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Thanks for the PM James. I should have said my motor is a 2.2 petrol. I thought the Throttle Posistion Sensor or the tick over was done by tech2.
In that case, the TPS is on the side of the butterfly
TPS will cause the gearbox to limp if unplugged...
Even on fly by wire?
Er... I don't think a DBW would have a seperate TPS...
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Ah, didn't see 2.2.
There's only one connector on the throttle with FBW and if that's disconnected you'll be going nowhere. Worth giving it a wiggle though.
Kevin
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Thanks for the PM James. I should have said my motor is a 2.2 petrol. I thought the Throttle Posistion Sensor or the tick over was done by tech2.
In that case, the TPS is on the side of the butterfly
TPS will cause the gearbox to limp if unplugged...
Even on fly by wire?
Er... I don't think a DBW would have a seperate TPS...
:y
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Ah, didn't see 2.2.
There's only one connector on the throttle with FBW and if that's disconnected you'll be going nowhere. Worth giving it a wiggle though.
Kevin
I will give it a wiggle, have had the connector come loose before but you know what it is like when you get blinkered in trying to chase/cure a fault. I think the egr prob is nailed and will try to get the codes read again in the near future.
Will have a look to see if the throttle butterfly is returning properly and also if the throttle body is clean inside.
Dave.
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I have a spare EGR valve in the garage that you are welcome to try but its from a 2.5 Vectra and the electrical connector is at the opposite angle required for a 3.0 Meega. May work OK for a 2.2 though. :y
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* cough * cam sensor * cough *
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My thoughts to TB!
By the way, Mr muscle is not good at cleaning soot etc out, paint stripper is the answer.
You also need to be careful with blanking the EGR on later cars as it can be detected by the MAF....it might be this thats causing the further problem.
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* cough * cam sensor * cough *
Would there not be a code set in this case?
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My thoughts to TB!
By the way, Mr muscle is not good at cleaning soot etc out, paint stripper is the answer.
You also need to be careful with blanking the EGR on later cars as it can be detected by the MAF....it might be this thats causing the further problem.
Did also try paint stripper as well. Nice clean valve seat inside egr. Have reseated Maf connector.
Dave.
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Just had the codes read yet again by my friendly local dealer, Mike Dundee will know the one I mean.
Fault code gives Egr and too rich exhaust. This is after putting a blanking plate between egr and base.
Dealer suggested putting a small 15 mm hole underneath where egr valve and blanking plate is and that should then get the rich readings down to working figures.
Dave.
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* cough * cam sensor * cough *
Would there not be a code set in this case?
There wasn't on mine or TaxiDrivers.
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Frequently no cam sensor code on 2.2s
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Friendly dealer let me look at report back from VX about another motor with over richness after blanking off Egr. Would appear I made too good a job of blanking off the valve. I cut a hole in my home made plate, 10mm, immediately below where the plunger on the Egr fits. Put Egr and modified plate back onto engine. Took car for a run of about 20 miles. No check lights came up, performance a lot better than before and gear changing smooth. Starts on the button and smooth tick over.
Just waiting for the 'frosty weather' to see if car starts in the cold, will keep you posted.
Another bit of information I found was on some Astra's they have been having problems with egr's and VX are recommending taking the Egr off. Putting a plate in the space, removing Egr completely and a software mod is coming out for the removal so faults do not keep popping up.
Dave.
Not for the Omega I am told.
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Frequently no cam sensor code on 2.2s
Interesting.
Dave.