I have a problem with cutting out on my focus it's been doing it for the last 3weeks now. and it's getting to me

it's cutting out when I put my clutch in. when driving coming up to junctions also when clutch is pressed when rolling .

it don't cut out when I'm just sat there idling.

I didn't have the problem before I bluefined it.
I have tried to learn it how to idle again by loading car up things like that also disconnected battery for a night. changed battery and also changed idle control valve.
and looked for boost leaks


what's next.... need idea's please

 

Has it got a dump valve? They can cause all sorts of running issues.

 

Ye I heard that to ill block it off tomorrow and see if it helps. I have replaced maf too. But was second hand. All started after plugging in and uploading a bluefin

 

could be you Idle Control Valve, was when mine was doing this, pulling up to junctions ect and just wouldnt idle, took the ICV and throttle body off cleaned them up, and was good as new.

pretty common i think.

 

I have changed icv for new the coilpack now the car has stopped cutting out but still drops revs when coming to a stop sits at like 650rpm then revs back up to normal after few secounds

 

I would try an ecu reset then start the car with the fans and lights on for ten mins ticking over then take it for a 20min drive so it can re learn its settings

 

ye done that to fix it a few times

 

Are you running a standard re circulation type dump valve or an aftermarket atmospheric one?
Mine used to do the same with a bailey DV26 fitted so changed to a forge re circ and solved it