Hi all, my mum is having bother with her 07 Fiesta 1.4 TDCi, i thought i'd ask on here to see if anyone has any ideas, as the Ford mechanics are lost.

Basically, its a totally random problem, can happen at any time, and go as quickly as it came.

Its just the engine management light pops on, the car goes into limp mode, and sometimes it goes off, sometimes it stays on.

Sometimes if you turn it off, the light will be off when you turn it back on, other times, it will still be on.

Mum has been back again today, and they dont have a clue. But they have ordered a relay (she didnt ask what relay).

So, anyone heard of this, or have any ideas?

Many thanks.