Yep just replaced the sensor and all was back to normal again the problem was a gradual one that got worse over time but was not there all the time at first.
when the problem appeared you would have to put your foot to the floor just to keep the car going but would have very little power and when stopped you would have to play with the gas pedal to stop it from stalling and then sometime it would just go away till one day it was there all the time and starting the car was hell. When the car did start the smell was horrendous where the CAT got flooded with fuel and it needed burning off.
__________________
 
|