Q: How to remove and install the EGR valve and EGR valve cooler on Toyota Sequoia and Toyota Tundra?
A: To remove and install the EGR valve and EGR Cooler, follow these steps. Disconnect the battery cable. Remove the engine cover and drain the cooling system. For the EGR valve, disconnect coolant hoses and electrical connector. Remove mounting bolts and nuts from valve pipes, retrieve gaskets. Detach pipes from valve and clean mating surfaces. Install valve with new gaskets and refill cooling system. For the EGR valve cooler, remove intake manifold and coolant bypass pipe. Disconnect hoses from cooler and unscrew mounting fasteners. Remove cooler assembly and, if necessary, detach pipe from cooler. Install cooler with new gaskets and refill cooling system.