In this regular column, Autodata’s Technical Team share their fixes to common problems raised through Autodata’s technical helpline, available to all UK customers.
Ford Focus – Lack of engine power and abnormal noise from engine bay when accelerating
We have a 2018 Ford Focus 2.0 Diesel in the workshop that is suffering from a lack of engine power and has an illuminated engine malfunction indicator lamp (MIL). The customer also reported a whistling noise on acceleration. We cannot see any pipes that have blown off in the engine bay. Can you help?
Yes, this has been reported to us before and it affects several Ford models with 2.0 diesel engines produced up to 15/04/19. The fault is due to poor manufacture of the turbocharger to intake air flap control actuator hose, resulting in an air leak. Remove the air filter housing, air intake pipe and turbocharger to intake air flap control actuator hose (Fig 1.1). Then, clean the area indicated (Fig 1.2). Fit a modified turbocharger to the intake air flap control actuator hose. Erase the trouble codes and carry out a road test to ensure fault has been resolved.