- Vauxhall/Vectra/2001/2.2 /Z22 XE Archived Message
Posted by Nigel Bennett
on April 29, 2008, 7:24 pm
|
Emission fault: Hi all We are told that this vehicle had dropped the timing chain and damaged valves etc .After repair we were asked to check emissions after MOT failure. No fault codes stored,live data shows, at idle all good ,emmisions good .Where it all goes wrong is at 2000 rpm plus ,the front oxygen sensor goes fixed high ie 900 mv adaptations long & short shows - 15 & co goes up to around 1.5 -2.5 area.Now the ECU knows it rich but doesn't appear to be able to do anything about it ! Fuel pressure good 3.8 bar. MAP 350 mb . What are we missing ? |
| Message Thread:
|