[Msportshqwn]

hi guys.

i have a 56 plate e91 msport, very lumpy on idle almost feels like its missing, had a fault on all 4 plugs so changed controller and reset codes yesterday,

what could cause these issues, idle can be a bit jumpy when warm too.

whats the best thing to read it? anyone near west yorkshire lol

thanks in advance.

shawn

[Yoxall]

Originally Posted by Msportshqwn

hi guys.

i have a 56 plate e91 msport, very lumpy on idle almost feels like its missing, had a fault on all 4 plugs so changed controller and reset codes yesterday,

what could cause these issues, idle can be a bit jumpy when warm too.

whats the best thing to read it? anyone near west yorkshire lol

thanks in advance.

shawn

Hi Shawn,

It could be a few things,

Injectors, fuel filter etc.

Hopefully a kind fellow forum member near you with Carly or fault reading equipment will plug it in for you.

I take it it's the 320d?

Have you ever changed the breather ?

[Big13]

I replaced all 6 glow plugs on mine plus relay controller still the same have no idea

[hondarayblue]

Maf sensor

[Msportshqwn]

Just a good old diesel 4 banger. Not had it long. Breather? Was thinking injectors but not sure how to find out. Without software and plugging in. Not sure if anyone local.

[Msportshqwn]

Originally Posted by hondarayblue

Maf sensor

Would this throw a code up?

[hondarayblue]

Maf sensor does not always throw up a code. My E90 330i used to run lumpy first thing in the morning. Since I changed the sensor it has been perfect. If you go this route, a reset may be in order to let the ecu know that a new sensor has been fitted.

[Msportshqwn]

So you can't just change a maf without coding? We have another in the family so may swap the 2 over see if the problem follows

[Digitalize]

Yeah just swap them over and see what happens, they aren't coded to the car.

[Msportshqwn]

I'll try give that a whirl then.