Mate's transit is suffering from a limp mode type thing where it won't rev over 3000 rpm when it goes into this state. It can be made to happen when pushing on like to over-take for example, and it can be got out of this state by pushing the throttle pedal up and down a few times quickly where it starts to do a kangaroo effect and then clears and is ok again.

Does the fact it can be cleared by doing the throttle thing above rule out an electrical issue or sensor issue?

I seen a Focus before with no power and it was because on that engine because the glow plugs were gone the Ecu put it in limp mode, there was a glow plug fault code on this transit, could it be the glow plugs causing this issue?

There are no fault codes at the min, there was a glow plug fault code and Egr code, the transit was mapped and the Egr was mapped out, and the mapper seems to have mapped out all codes as none show up now at all, not even the glow plug one and one that related to the locks and no enine management light comes on. He's in the process of getting the original map back on and is going to fit a new Egr valve and hopefully with it back to standard there might be codes to help fix it.

Fuel filter has been changed and made no difference, also a new MAF sensor was fitted and the MAP sensor was cleaned too, none of this seems to have made any difference. 

I'd appreciate some help troubleshooting this issue :)

Oil overfull, diesel can get into the oil if its constantly trying to regen. Check the dipstick, if its just that needs to do an oil and filter change.

I don't think this transit has a Dpf from factory? Oil level is fine though.

Does the map sensor on these leave a fault code?

We cleaned the map sensor and seemed to help for a couple weeks, then started doing it's thing again, cleaned it again and was ok for a week or so, cleaned it again and it made no difference this 3rd time.

Also, does the crank and fuel rail sensor leave codes on these transits?

A cog with exclamation mark symbol flashed up on the dash a couple times the last time it went into it's limp no power mode thing but didn't stay on.

Our company vans have same issues, it's down to fuel injectors  not working or worn, service light comes on with ! And loss of power on motorway inclines.

 

   Gary

I'm have similar issues with my 07 transit 2.4 help me please