Emission Readings

[mike.perry]

Ford Focus 1.6
Does anyone know what these readings mean, can they be corrected and is it expensive?

2nd fast idle test
CO %vol max limit 0.200, actual value 1.863 Fail
HC ppm vol max limit 200, actual value 401 Fail
Lambda min limit 0.970, max limit 1.030, actual value 0.934 Fail

Natural idle test
CO %vol max limit 0.300, actual value 0.790 Fail

[bmcecosse]

Crikey - they are WELL off. I suspect the lambda sensor is not working. Probably best to get on the Ford Forum and ask there......

[PSL184]

Could be the lambda sensor or the cat but if the engine / cat is not HOT you will not get low enough readings to pass.

[mike.perry]

Presumably the engine was at the correct temp for the test. Would I be throwing money into a bottomless pit, I know that cats are expensive?

[PSL184]

You cannot assume the engine was at the correct temp. As said already, you need to give it a darn good blast to clear it out first (the high hydrocarbon reading is due to unburnt fuel which is synonymous with a sooty engine). Then make sure it goes on the tester hot (and not just after once round the block). Cats and Lambda's not necessarily too expensive if you shop on the internet. The last CAT I replaced on a Freelander was around £65 all in delivered....

[mike.perry]

Decided to PX the car, somebody else's problem.

[lambrettalad]

px sounds like a very good idea,what you thinking of buying ,if I may be so nosey

[mike.perry]

Got a Nissan Snot