Hi Experts ,

As usual some surprise always  near MOT , but I am not giving up since I strongly feel  car engine seems  solid no point binning it and also  why to worry ,fear  when one have continued  support of Skoda expert Pete  @Breezy_Pete , Really appreciate Pete  @Breezy_Pete for his  continuous support and advising correct parts and even supplying tested sensor which was very expensive and possibly would costed me fortune.

 

All error codes gone once pre cat oxygen sensor replaced and  throttle body cleaned  (without removing) ,  lot of gunk found in throttle body, of course steering rack also replaced with new one as well as it was leaking and  all 4 new tyres with service. I have also replaced MAP sensor with  old MAP sensor (cleaned with isopropyl 99% alchol) removed from my car  which was earlier thought to be broken but it was NOT , SKODA car does not like cheap Chinese sensors as ECU expects original parts I think.

 

 

I have  tried to understand the Fuel trims which is very confusing still as values are always different so could not interpret. Planning to change the ECT sensor as almost 2 years back I have changed so it is bit tricky but not difficult coolant flush after 2 years may be also be good for engine.

Thanks for reading , hope it helps somebody facing similar issue. 

Finally happy ending MOT passed error gone.  Another year to run . 

Regrds 

raky

 

 

 

 

Fuel Trim.pdf

Edited *** supplying tested sensor which otherwise is  very expensive part and possibly would have costed me fortune if I have would have bought new one from VW as Cheenes Chipo does not work .

Edited 12 March, 20242 yr by raky

Dear Pete @Breezy_Pete

Appreciate your support always , another year MOT passed which would have not been possible with your support and advice , this MOT there was zero cost of any repair. Your invaluable advice always saved me from throwing away working sensors and gave me confidence not to listen the garages and error code which generally some of OBD sensors shows.

I fully agree sensor either works or does not work, their is NO intermittent stage of any sensor . Car had small exhaust leak which justifies that un metered oxygen is entering into exhaust near flexi and before post cat o2 sensor hence o2 responded based on extra oxygen which may have been disturbing the fuel:oxygen ratio hence some time engine light.

Great work Pete , please keep helping and saving planet.

Kind Regards

raky