over fueling

[y3k]

Hi there guys!

I've got a major over fueling problem with my 95 500.
Shows about 5% co a gas analizer. Should be less than 1%??

Would a faulty AFM cause this much?

Look forward to some ideas.

[dnb]

Failed lambda sensors?

[rfisher]

www.pistonheads.com/sales/64328.htm

[GreenV8S]

Fuel pressure? Dirty injector? Faulty coolant temp sensor? Any other sensor fault forcing the ECU into fault mode?

[trackcar]

Unless you've had your cats out it shouldn't be showing any % on the analyser .. that points to lambdas firstly but if the situation continues it'll start affecting the cats.

If by any chance you're decatted ignore the above lol!

[mongoose]

trackcar said:

If by any chance you're decatted ignore the above lol!

yep,mine would be proud of less than 4%