Emissions light only when stationary

[Curley]

The light comes on everyday but only when stationary for a couple of minutes i.e when talking to someone.


Light came on on the standard exhaust all the time, even when driving.

Had a milltek put on but my cat was cracked so i believed this was a problem when the emissions light came on.

Now ive modified the cat to a 2.5'' exit with no blowing points in the zorst but now i have the problem of it only coming on when stationary and goes off after about 2mins of driving.


Should i worry? Drive slow when the light is flashing? Buy a new lambda sensor? Block the lambda hole and cover the sensor?

 

[st3ve]

Have you tried taking it for a good run?

Short journeys clog the cat up and stop it from doing its job.

 

[Curley]

Yeah but it sill comes on when stationary.

Surely it shouldnt do it everytime im stopped for more than a minute?!? Lambda sensor?

 

[chris182cup]

my emission light came on yesterday and got it checked and its the back o2 sensor, getting it replaced asap

 

[Curley]

Do you mean the pre cat lambda?