Failed Emmissions Test on fast idle

suzilufc

Please help .......
I drive a 2.2 Signum with the Z22YH engine. It has just failed MOT on the emmissions test on fast idle.
I have paid out for a diagnostic check which was inconclusive. The only answer I was given was that it could be the air flow sensor or the first or second o2 sensor.
The diagnostic showed the readings were ok on the air flow sensor but rich on the first o2 sensor. The guy who did the test thought that it was likely to be the air flow sensor but that it could be any of them.
Does anyone have any suggestions other than trial and error.
And I am having trouble getting a lambda sensor for this engine - anybody know where I can get one that isnt over a £100 from Vauxhall.

Sjdickso

Try AutoVaux online.

MikeS

got to any motorspares place and get an NGK front lambda

Matt

suzilufc said:
And I am having trouble getting a lambda sensor for this engine - anybody know where I can get one that isnt over a £100 from Vauxhall.

http://www.autovaux.co.uk/LoadPortal.as ... 5&vnum=138

Their prices exclude VAT though, so will be over £100 when you check out.

How much exactly are VX wanting for this part? Autovaux are usually ₂₀% cheaper than VX on most products.