1. Open the hood of your vehicle and locate the engine bay.
2. Look at the back of the engine, close to the firewall.
3. You should see a valve with several vacuum lines connected to it. This is the EGR valve.
Here is a more detailed description of the location of the EGR valve on a 1999 Ford Expedition:
1. The EGR valve is located on the rear of the engine block, just below the intake manifold.
2. It is mounted to the engine block with two bolts.
3. The EGR valve has a round body and a small diaphragm on top.
4. There are two vacuum lines connected to the EGR valve, one from the intake manifold and one from the EGR solenoid.
If you are replacing the EGR valve, it is important to ensure you purchase the correct part. The EGR valve for a 1999 Ford Expedition is a Motorcraft EV301 valve.
