2003 Mondeo stuttering
I have a stuttering mondeo with p0171 fault, running too lean. I have changed the air filter, changed the MAF sensor, changed the fuel temp sensor, cleaned the EGR and changed the cat. It's still not running right and mpg is poor. Any ideas on what could be causing this?
Asked on 20 February 2013 by laney71
Answered by
Alan Ross
Well code P0171 indicates either that you have an air intake system problem, so take it you have checked all pipes /connections.
It also indicates the MAF which you have changed.
Also indicates the Injectors - so given the age of the car would suggest that they may need servicing/replacing dependent on the mileage of the car.
P0171 also could indicate the HO2S (Lambda sensor) so might also be prudent to check that out as well.
It also indicates the MAF which you have changed.
Also indicates the Injectors - so given the age of the car would suggest that they may need servicing/replacing dependent on the mileage of the car.
P0171 also could indicate the HO2S (Lambda sensor) so might also be prudent to check that out as well.
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