hello guys.
my vectra c z22se come up with p0171 periodic most times it come up if im holding for red light or like that
then it can be there for a couple of days and be gone by it self again but i dont really feel any changes in the way the engine is running.
sometimes it takes a long time to slow down engine rpm
my girlfriend said it a few times the last month have been close do dying when pressing the clutch in
i havent tryed that my self but i dont use it much either
any ideas where to start the seach so i can get it fixed
about 5000 km since about 3 month i had the engine renovated with new valve, piston rings, bearings head gasked and new manifold +cat aftermarket form ebay.
and removed balance shaft en new chain kit but that crap is sometimes cold ticking again 🙁