Limp Home Mode?

[wlshyd]

Hi folks, I have had this odd issue with my 06 2.0 tdci where it seems to 'cough' a bit down the motorway and then suddenly loses power as if in limp home mode.

However when changing down the gears the turbo will only kick in at 2500rpm +, but the fault only ever starts happening on the motorway.

Does this sound like it is in limp home mode, as at motorway speeds in 6th ie only doing around 2000rpm with no turbo there is NO power!

Just thought I'd ask. Oh and no warning lights whatsoever...

Thanks in advance

dan

[wlshyd]

I guess my actual question is would limp home mode allow the ca to still accelerate in lower gears and allow the turbo to kick in at higher rpms?

Or does it stop virtually all accelerative driving altogether?

Sorry for being vague

dan

[wlshyd]

Nobody any idea?(!)

[Gazjs]

Moved to technical for greater response (maybe )

[ashrobinson]

I had similar on my focus,

turned out to be the GEM module.

Get it checked out mate.

[cyb]

I would have thought the engine management light would come on to warn you there is a problem and the limp home mode would limit the car to the same revs in all gears, so if you are finding it will rev higher or lower in different gears I have my doubts it’s the limp home mode kicking in.

[mintalkin]

check for split in intercooler pipe from egr valve