vectra shuddering and no power

[morrisseyno1]

hi all my 2.2 sri shudders in low gears need to take revs up no power really in high gears for a 2.2 are these cars prone to this i thought maybe the problem is my airflow meter but not sure any help wpuld be great cheers

[jrh1]

Possible chain fault, maybe timing out.

[morrisseyno1]

The car seems as if it's goin to stall if the revs are not up enough and has a lack of power it shudders a fair bit anyone else had this before someone said it could be the airflow meter and is a common prob on these cars any help will be great thanks