hi all been lurking for a while and seems like the best mini forum about
i have a 07 mini cooper r55 which im having idle issues with
the car seems to run fine at speed but as soon as you come to a halt the revs drop to about 500 then go back to about 600-700 if i put the air con on it dosnt do it or less noticable ive changed plugs, coils,
im only getting one fault fault and that is 002fe7(dfe failure starter control)



ive attached parimeter screen shot
many thanks james

 

Your air/fuel is way lean for idle.

You should be idling around 14.7:1 at operating temp, running that lean will cause a stumbling idle.

That code doesn't do much for diagnostic purposes, you need to have the codes read with a professional scan tool to know what is going on.

I have noticed that the Coopers have a slight stumble to them at idle, even when in proper running order.

 

Yes, you'll want to plug in with a code reader that can read MINI specific faults. This will help you determine what may be going on with your MINI. Is your CEL on?

 

many thanks for the reply
no i have no cel light all im using to check faults is carlybmw and a c110 scanner would a inlet leak cause the car to run lean as i do get quite a bit of what sounds like induction noise under load
thanks again

 

Yes, an unmetered air leak would cause a lean condition, but you would almost be guaranteed a CEL with a vacuum leak on this generation car.