Rob33

Hi there,
I'm hoping someone can help me please I've got a Ford Fiesta 2011 1.25. I've had the ecu light on for a week or two and had it plugged in and came up with the coil pack failing and the car was only running on 3 cyclinders had it fixed and the car runs nice but going down the motorway and the ecu light started flashing once I went over 70mph but stopped once I slowed down blow 70mph does anyone no what this could be?
Many thanks
Rob

Piston Broke

chances are a cheap coil pack mate also did you change or look at your plugs and leads ?

oldford

The flashing light is telling you that the engine has misfires (runs on 3 cylinders) and that it could damage your expensive catalyst.
I would take it immediately to someone who knows what he's doing.

DangerousBryan

Did you have the leads and plugs changed as well? We always change them all at the same time. A knackered plug lead can kill a coil.

mark826

Check the plugs. Seen plenty of these cracking the porcelain on the plug itself causing similar issues.