I`ve got a 2.0dti zafira(2003,53) with a problem ? it started when i was accellerating down the motorway,got to 80mph about 3000revs engine management light came on,into limp mode.Took it to garage for diag, said (fault code PO234 air mass meter).Changed that,got to 80mph and same thing happened again,so advised to change egr solonoid behind air mass metre.same problem. have changed vac out sensor & turbo pressure sensor,still not right,tried another air mass metre which improved the accelleration but made it a lot smokier,so i`m now back to all parts origional,it drive`s ok but the accelleration`s not what it should be,and if i try to push it to hard it will go into limp mode at 60mph if under pressure.
The engine management light does`nt stay on permanently,it will go off when you take the keys out.
Anyone got any ideas ? CHEERS PAT.
26/10/2008 Solved problem,took car for m.o.t and one of the mechanics spotted an air pipe with a hole in it(been rubbing on a wiring loom)pipe ran from t/section right hand side of battery to top of engine(right hand side of manifold)