First of all my excuses for writing this in (poor) english....

Have the following problem with my 2004 Corsa C (facelift) Z18XE 105.000 km's EDS chip @ 25.000kms Green-airfilter @ 30.000km's
Never had problems with the engine before! It ran like the devil

Last saturday all the sudden the enginelight turned on.
Dropped it off at the garage last tuesday because it was a horror to drive. Low and high revs on stationair and shocking when driving like it wanted to stall.
They have diagnosed the electronics and the errorcode was P0170 - poor mixture (Abgas zu mager)
They tested everything:
-Co2-test > Abgas zu mager (1.60?)
-Both lambda's > ok
-Air/vacuum leakage > none
-MAF > defect and replaced
-Sparkplugs > replaced just to be sure
-throttlehouse > cleaned just to be sure
-Injectors > ok
-The thing that feeds the sparkplugs with power > ok
-Reset of error-code
Result:
Car was ok! Co2-test (1.01?)
Revs were ok
Drove ok
So i picked it up yesterday....
It was a real difference with the car i dropped off earlyer this week...
Untill tonight... Went for a short spin to the Mac (9-10km) On the way back it all started over again...

Searching the internet i found that resetting the error results in a perfectly running engine UNTIL it's at it's end of it's capebillity of rearanging the ecu.
Some other possible problems could be:
-Camshaftsensor
-Enginetemperaturesensor
-Fuelpressurecontroller
-EGR (don't know if my car has one)
Can someone please give me advise what to do... I'll bring the car to the garage next monday but i want to point them in the right direction.... It already has cost me a small fortune and i'm about to put the car on fire....
