Rough Idle 320d e90

[Danielb1]

Hi Guys. i have a 2006 BMW e90 320d for the last 6 years. Recently my damper pulley collapsed and snapped my belts. I had replaced them all with brand new parts. Since then i notice then the initial idle (0-15sec) is very rough and rowdy. Since then i have been using Liqui Molly Diesel Additive in my fuel thinking it might be my injectors. I also replaced my MAFF Sensor and still no joy.

 

[husaindindar]

Any codes?
Having diagnostics to check codes will be a good start in my opinion.

 

[Danielb1]

the only fault code that came up was the faulty MAFF sensor, which i replaced

 

[husaindindar]

Ahh damn. Nothing worst than replacing parts and still having the same fault. I guess the MAF is a shadow code.

I would have a look at the EGR valve and check its operation and have it cleaned maybe?

Maybe another fanatic has some recommendations also...

 

[Danielb1]

Ahh damn. Nothing worst than replacing parts and still having the same fault. I guess the MAF is a shadow code.

I would have a look at the EGR valve and check its operation and have it cleaned maybe?

Maybe another fanatic has some recommendations also...

Hi there. Whats the EGR valve?

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[Boss Wit NOS]

coil pack perhaps??

a friend of mine had a rough idle as well on her 125i coupe, her car was still under warranty, so after a few changes they found out it was the coil pack..

problem solved!