ive just had a bit play with the data scan and it came up with a code 53 (right hand 02 sensor), the left sensor was going up and down, the right one was stuck at about 30 odd

 

also noticed that the tps is set at 0.42v, is this ok or should it be 0.45v, how would i do this using the consult (if i can)

 

gonna have a bit more play with it later, am reading the manual at the moment, hopefully get somewhere with this fookin car of mine lol

TPS is ok, but yep RH O2 sensor is buggered....check the connector and wire first

would this be the cause of my backfire, missfire, exsessive use of petrol and general shite running??????

would this be the cause of my backfire, missfire, exsessive use of petrol and general shite running??????

It would certaintly cause overfuelling yes, which all yours symptons indicate, although not sure how much affect it would have...be interesting to see how well she runs when fixed.

0.3v (or "30" for nissan datascan) or there abouts on an O2 sensor = dead o2 sensor. dont bother checking the wiring, just replace sensor.

ive had a quick look at thewiring, seems ok, so next step is to change the 02 sensor, more money lol