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MG MGF Technical - MGF oxygen sensor

Just had quote to replace MGF oxygen sensor - due to CO2 reading being excessive on MOT - er... £450 at MG dealer !!**!!

Is it that difficult to unscrew sensor and replace without having new manifold etc... ?

Could there even be anbother cure to the excessive CO2 problem (10 times over !!) ?
Pete Y

>> Is it that difficult to unscrew sensor and replace without having new manifold etc... ? <<

Mike's your man to ask here, but I gather that this job can be very variable - sometimes the sensor simply undoes, on other occassions it can appear to be practically welded in situ... Age is probably a factor here.

>> Could there even be anbother cure to the excessive CO2 problem (10 times over !!) ? <<

Oops! 8o(

Actually the sensor itself may not be at fault. John Thomas found on his car that the sensor cable had frayed against a sharp edge in the engine bay. Check out the archives, the full story is there.

It'd certainly be an easier job to patch a frayed wire than trying to remove a stuborn lambda!
Rob Bell

Hi!

I had the same problem The CO2 readings was 3 time too high. I changed the plugs and the leads + new engine oil and air filter. The most common problem is that the engine does not fire all the gasoline so some gas stands left in the CAT (=lots of white smoke from the exust) . After my changes I drive the car VERY hard for some miles. After that the CO2 reading was ok.

/Magnus
Magnus

This thread was discussed between 19/03/2003 and 20/03/2003

MG MGF Technical index

This thread is from the archive. The Live MG MGF Technical BBS is active now.