jeudi 29 juin 2017

330ci running lumpy when warm/hot

Hi guys i'm wondering if you guys could help me. I have 330 ci 2003.

The car seem to run fine when cold but when it warms up it starts running lumpy as if its misfiring.

So far its had bank 1 and 2 sensor 1. Air flow meter. DISA valve and a second hand idle control valve.

Most of the main intake pipes have been changed and everything is tight. we also tried a smoke bomb in the intake to see if that was leaking but seems fine.

I'm leaning towards coolant temp sensor or the 2 lambda after the cats. failing this i'm thinking ecu!

When scanned i'm getting o2 sensor deviation codes

Any ideas guys? All your help is appreciated

Regards

D


330ci running lumpy when warm/hot

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