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[billy boy]

Hi All I have a 2002 omega 2.2 ecotec. It is the most unreliable car i've ever owned. In the last 6 months it's had a new exhaust manifold,cat ,head off and new studs fitted Head was machined and pressure tested refitted with new timing belt kit. Its had a new throttle body and egr valve. Went for a run done 300 miles then car stated to hesitate and was trying to stall very hard to start and keep idling. Had a mates code reader on it today Code P0301 and P1700 showing. car is not misfiring as per 0301.

[albitz]

Faulty cam sensor is the most common cause of trouble on the 2.2 petrol engines.

[flyer 0712]

Hi mine had the same trouble and it was lambda front sensor nearest the manifold.....hard to start...sounded like a machine gun...ran like a pig....but that cured the problem..

[jonny2112]

Pity you hadn't found the site first - might have saved you some of the grief !
Now you're here though you'll find a wealth of information and support.
Hope you get sorted 

[adey2]

where in uk are you billy, got a couple of cam sensors here if your close and wanted to try one

[billy boy]

where in uk are you billy, got a couple of cam sensors here if your close and wanted to try one

Hi Thanks for the offer I live in Edinburgh I'm going to get an auto electrician to look at the car this week but appreciate the offer

[billy boy]

Update
EGR valve stuck open causing problems

[adey2]

blank it off, sort the problem forever