Ford Workshop Service and Repair Manuals

The turbocharger consists of two elements, a turbine and a compressor both installed on a single shaft and are contained within a housing.

The turbocharger and exhaust manifold are a combined assembly and, although it is possible to seperate them, they are not supplied seperately and should therefore not be disconnected.

The turbocharger bearings are supplied oil from the engine via the oil supply tube. This is returned to the oil pan via the oil return pipe.

The turbine element of the turbocharger is mounted on the exhaust manifold and uses the energy of the exhaust gas to drive the compressor. The compressor draws in air through the charge air cooler.

The turbocharger is governed by means of a wastegate. The wastegate redirects some of the exhaust gas past the turbine. The wastegate is controlled by a waste gate control solenoid which is preset during manufacture and must not be tampered with.

Vehicles with common rail fuel injection

The turbocharger vane adjustment vacuum diaphragm unit adjusts the turbocharger vanes according to the vacuum supplied by the turbocharger vane adjustment solenoid valve. The turbocharger vane adjustment solenoid valve is controlled by the powertrain control module (PCM). The actual turbocharger boost pressure is regulated by the adjustment of the turbocharger vanes and so eliminates the need for a wastegate control valve. The turbocharger vane adjustment vacuum diaphragm unit is preset during manufacture and must not be tampered with.