Exhaust Gas Recirculation (EGR) Cooler: Notes
WARNING: This page is about a different car, the 2020 Ford F-550 Super Duty, 2020 Ford F-450 Super Duty, 2020 Ford F-350 Super Duty, 2020 Ford F-250 Super Duty, and 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
The EGR cooler removes heat from the exhaust gases before the gases enter the intake manifold. When the exhaust gases are directed through the EGR cooler, coolant from the engine cooling system reduces the exhaust gas temperature. The exhaust gases are directed through the EGR cooler by a PCM controlled EGR cooler bypass valve.