How to Replace the EGR Valve in a Ford Probeby Dan Ferrell
The exhaust-gas recirculation (EGR) valve on your Ford Probe introduces exhaust gases into the intake system to help reduce nitrous oxide (Nox) in the combustion chamber. It is not uncommon for the diaphragm to puncture or internal components to get stuck with years of service. Although different Probe models use different types of EGR valves, you can change a failed valve at home. Label the hoses or connectors to make the replacement procedure much easier.
Removing the EGR Valve
Open the hood and locate the EGR valve connected to the intake manifold. The valve looks like a metal, flatten mushroom, between 2 and 3 inches in diameter and, depending on your particular model, with one or two vacuum hoses connected to it.
Disconnect the ground (black) battery cable from the battery using a wrench.
Detach the vacuum hose from the EGR valve by hand. If your particular valve has two vacuum hoses, label and detach them.
Unplug the EGR position sensor electrical connector, if your valve is equipped with this sensor.
Disconnect the water hose(s) from the valve, if your model is equipped with them, using a pair of rib joint pliers.
Unfasten the exhaust pipe retaining nuts at the EGR valve and exhaust manifold, if your model is equipped with it, using an open wrench.
Unfasten and remove the two valve mounting bolts using a ratchet, ratchet extension and socket.
Remove the EGR valve and gasket from the intake manifold.
Clean the intake manifold mounting surface using a plastic scraper and a wire brush, if necessary.
Installing the New EGR Valve
Position the new EGR valve and gasket on the intake manifold, and install the two mounting bolts hand-tight.
Connect the exhaust pipe to the exhaust manifold and EGR valve hand-tight.
Tighten the two valve mounting bolts using the ratchet, ratchet extension and socket.
Tighten the exhaust-pipe retaining nuts using the open wrench.
Connect the water hose(s) to the valve, if your model is equipped with them, using the rib joint pliers.
Plug in the EGR position sensor electrical connector, if your valve comes equipped with this sensor.
Attach the vacuum hose(s) to the EGR valve.
Connect the ground (black) battery cable to the battery using the wrench.