Thanks Tizer 👍

This is the MAF and MAP issue I'm talking about when the car keeps jerking and surging non stop when you keep your foot steady. Accelerating stops it but this also triggers the Turbo to shut off.

Dosconnecting the MAF sets the default profile and this stops altogether. Throws a code but drives fine 🤷‍♂️

 

I see what you mean about the flutter. I would normally the RPM and Speed as well when doing Live Monitoring to make the results more meaningless though.

From what I can gather you were going very slow and maybe in the wrong gear at the time and this would cause a bit of jerking when driving in any car although not necessarily the flutter in the airflow. The Injectors in this Engine are not the best and often give a jerky drive at light Accelerator openings, it may well be that is what you are feeling.

The way I'm reading the Screenshot is that the two times that the Turbo went to zero were when the Accelerator was released for a short time, you can micro analyse in FORScan by changing the scale for each PID if necessarily

What is strange is that the Accelerator position did not go much above the 8% when you were trying to correct the flutter.

I'll have a fiddle later on the way home and do what you said. Just spending the day with my daughter.

I thought it was low revs initially when driving hence the surging but it does it when at a constant speed too. So doing 60mph in 5th and the car starts sounding like you're tapping the pedal and you feel the car keep on jerking forward. The revs on the dial don't change when it's doing it either which is even more weird. Asked a few garages to drive the car and they've not been able to replicate.

The rough idle can be bad someday where my phone in its mount is bouncing all over the place 😂🤦🏼‍♂️

Yesterday morning, car drove absolutely fine and was flying. Turbo never cut out once which was odd. I wish I had someone local I could trust who knew their stuff. 

You guys have been a great help with trying to get to the bottom of it though. 

2 hours ago, KillingJudas said:

I'll have a fiddle later on the way home and do what you said. Just spending the day with my daughter.

I thought it was low revs initially when driving hence the surging but it does it when at a constant speed too. So doing 60mph in 5th and the car starts sounding like you're tapping the pedal and you feel the car keep on jerking forward. The revs on the dial don't change when it's doing it either which is even more weird. Asked a few garages to drive the car and they've not been able to replicate.

The rough idle can be bad someday where my phone in its mount is bouncing all over the place 😂🤦🏼‍♂️

Yesterday morning, car drove absolutely fine and was flying. Turbo never cut out once which was odd. I wish I had someone local I could trust who knew their stuff. 

You guys have been a great help with trying to get to the bottom of it though. 

I would bring up the Fuel Rail Pressure as well to see if that is doing something that it shouldn't.

So no MAF wobble but there's a fuel pressure drop before the Turbo dips

26 minutes ago, KillingJudas said:

So no MAF wobble but there's a fuel pressure drop before the Turbo dips

Yes but that seems to coincide with the time that your APP went to near zero, just like the times before on the graph when presumably you were changing Gear.

Had to take foot off accelerator as the car was running away with itself over 80mph and then the turbo went into limp

15 minutes ago, KillingJudas said:

Had to take foot off accelerator as the car was running away with itself over 80mph and then the turbo went into limp

It is strange how your Turbo goes to zero when the problem occurs and I don't have an answer.

Just before that at the start of the graph the Turbo was working fine, 241 kPa is just about the maximum Boost that I would expect.

When the turbos working and I keep the revs up it feels way faster than 109bhp. Had a 205bhp Audi A5 and a golf GTD estate that did 200bhp and this Focus throws you back in the seat like those when booted.

At a bit of a loss where to go next or to just run it as is until it dies. 🤷‍♂️ would be nice to have boost on tap though and not have to keep restarting the car. 😂