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English Section => Diagnostics => Topic started by: s.thompson16 on August 19, 2009, 09:15:21

Title: vectra z18xe
Post by: s.thompson16 on August 19, 2009, 09:15:21

 Hi got a vectra with z18xe engine. Failed uk mot test on exhaust emmisions co 5.30%. Tried new air flow meter and lambda sensor in exhaust but still the same. Anybody had this problem or any ideas what could be causing this ? hydrocarbon reading also high and lambda switching low ?

Title: Re: vectra z18xe
Post by: kratmel on August 19, 2009, 19:37:52

Try to cheсk or replace temperature sensor. Same times wiring or harness for this sensor bad. Is the live data from this sensor correct?
How mach miles driving your car? It's engine performance good? Is the engine mechanics correct (timing belt) ?