help my ford focus has failed mot

claire0906

my focus 1.4 has failed its mot on emissions it was running with the co level of 10% more than it should. the garage has had my car for a week now, they have tested the ecu and there was no fault but it still wont go through the test has this happen to anyone else and how much is this gonna cost me any ideas

cyclonebri1

Nothing to offer you op, could be many things, the garage should be able to pin it down though.

Now knife in the guts time, where are all the ford focus fan club members when one of there's goes wrong :rotfl::rotfl::rotfl:

colino

Take it to another garage. If they are having problems diagnosing, never mind fixing, such a bread and butter car then they are clueless.

Sirbendy

money on the lambda sensor here. Get it to a proper garage with the live-data reader kit, job done.

Best damn thing I ever bought for my vauxhall, haha.

mikey72

claire0906 wrote: »

my focus 1.4 has failed its mot on emissions it was running with the co level of 10% more than it should. the garage has had my car for a week now, they have tested the ecu and there was no fault but it still wont go through the test has this happen to anyone else and how much is this gonna cost me any ideas

Post up all the emission figures if you have them.

jd82

When will garages learn that electronic diagnositcs is not just about waiting for a lamp to come on and getting a fault code out of it. As stated above they need to read the live data so they can see exactly how the sensors are behaving.

I would check the simple stuff though, when was it last serviced? Are the plugs in good condition? Is the air filter blocked?

msmyth18

Try using a premium fuel, they usually lower the emissions.

Hammyman

msmyth18 wrote: »

Try using a premium fuel, they usually lower the emissions.

Not by 10%. The car is doing the equivalent of running on choke. As mentioned, the Lambda sensor is a prime suspect along with the temperature sender.

msmyth18

Hammyman wrote: »

Not by 10%. The car is doing the equivalent of running on choke. As mentioned, the Lambda sensor is a prime suspect along with the temperature sender.

Every little helps!

droodle

Most probably the oxygen sensor, or a problem with the MAF sensor. I doubt it would be youre cat unless you have seen wot looks like candy floss hanging out of your exhaust! Or even youre exhaust could be blowing somewhere. It should be a quick relatively cheap fix, once identified.