supra dan Posted April 20, 2005 Share Posted April 20, 2005 just had my mot, only thing it failed on was emissions. ive got both cats removed, but it passed last year no problem like this, so i just want to check that this is the problem.could someone tell me if this looks like a cat would solve the problem? fast idle CO level ;0.83% fail - 0.3 HC level ;80ppm pass lambda ;1.02 pass natural idle CO level ; 0.64% fail i had a 200sx with the cat removed,it failed so i refitted the cat and it still failed! turned out to be the lamda sensor. would changing the sensor work? any help appreciated Link to comment Share on other sites More sharing options...
Markie Posted April 20, 2005 Share Posted April 20, 2005 Putting a CAT in would easily bring it down to pass levels, them levels are not too bad at all concerning you have no CAT in the pipe work at all. If sensor was nackered, you would get much more higher CO levels. Link to comment Share on other sites More sharing options...
Whitesupraboy2 Posted April 20, 2005 Share Posted April 20, 2005 cleaning the lamba sensor is easy anyway so you may as well do that as well. Mine failed on emissions (with both cats in) so took lamba sensor off, cleaned it with petrol in end, put it back in and it passed, but i made sure the cats were cooking before i got to mot station. Cleaning the lamba sensor with presurised air is best way to do it! Search for thread by me of 'mot failure' or along those lines! Link to comment Share on other sites More sharing options...
supra dan Posted April 20, 2005 Author Share Posted April 20, 2005 cheers lads Link to comment Share on other sites More sharing options...
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