Y reg astra 2001 auto

as you know im a sh1tbag astra specialist,chances are its a 8v auto and the egr is throwing in as you drive down the road,normal cure is bolt another next to it using a longer 8mm bolt,plug the wiring into that and since its only operating a dummy then end of problem.been wrong before tho....i can give you the full sp with other options but it would take too much time to type it all out

16v auto the normal cause was either dropped baffles in the rear box or manifold cat-blocked in either case-but you generally notice a real quiet exhaust at idle for that or assorted other symptoms,not hard to spot either way.they burn oil on no 4 and short journeys can cause all sorta weird and wonderful symptoms.combine that with the well known ecu failures and the hit and miss software patches that gm kept trying to cure em and they can be a real laugh.take the egr outta it if im in the ball park,the manifold below it will be filled with gunk/carbon etc going into the inlet