fizz help

[spud m]

help me please i have a fizz 1.0 with fire eng can not get oxygen below 9.3 at idle high r p m down to only 5.3 thank you

 

[custard]

what have you tried so far?

 

[spud m]

a new oxygen sencer

 

[custard]

had the cat checked?
tried fuel cleaner?
tried taking it for a good long drive?
is the car fully warmed up when the test is done?

 

[spud m]

nn no no yes

 

[custard]

when i say warmed up i mean cat temp not engine temp.
the long run takes care of this,the cat needs to get nice and hot

 

[spud m]

all very hot and at full temp

 

[jug]

it helps a lot if you can tell me the results for co, hc & lambda.

check carefully for an exhaust leak before the lambda.