Originally Posted by
oldford
A voltage of 0.8 means the mixture is rich. Ecu should lean the mixture, but doesn't for some reason.
Does this car have a map-sensor of an air mass sensor.
In case of a map-sensor it could be an air leak.
It doesn't have a maf sensor, the guy from Ford assured me it did but I can find one and theres no mention of it on microcat, cant find any evidence of a map sensor either.... (Its the later model 1.25 with the airbox over the inlet manifold)
Originally Posted by
st3v3
I cant remember now how many lambda sensors this car has (my wifes old car was a 1.25lx)
But if i remember correctly i had exactly the same problem and was fixed by changing the lambda sensor, now this has me thinking there is two and it was the second one that was changed, in your words the "post cat sensor"
Yea it does have 2 sensors, I though the same but the ford diagnostic guy told me it was working fine and that its not actually used for fueling only for ecu diagnostic to check the cats working. I have a couple of spare sensors so I'll give it a try swapping it anyway.