How to Install an EGR Valve on a 2002 Honda Accord

The 2002 Honda Accord uses the exhaust gas recirculation valve to reduce oxides of nitrogen, which when released from the tailpipe to the atmosphere form hydrocarbons. It mixes with naturally forming reactive compounds and sunlight to form photochemical smog. In operation, the EGR valve routes a percentage of the exhaust back into the intake manifold to be mixed with the incoming air. This mixture of exhaust gas, fresh air and fuel is diluted in the cylinder, thus cooling the combustion chambers. Although the 2002 Accord had two engine options, the process of removing and replacing the EGR valve is similar in both, with a few small differences.

Instructions

1

Locate the EGR valve. The 2002 Accord has either a 2.3-liter four-cylinder or a 3.0-liter V-6 engine. The four-cylinder EGR is on the left end of the cylinder head. On the V-6, the EGR is on the left end of the front cylinder head, where it is bolted to the water passage.

2

Remove the air duct to the throttle body for more clearance. Disconnect the intake air temperature sensor, the positive crankcase ventilation hose, and -- on the four-cylinder models -- remove the wiring harness from the air duct. Squeeze the spring clamps and pull the duct off the air filter housing and the throttle body.

3

Disconnect the electrical connector from the EGR valve. Remove the nuts securing the EGR valve to the engine, using a socket and ratchet. Lift off the valve. Discard the old gasket.

4

Install the new gasket that accompanies the new EGR. Install the new EGR and torque the nuts to 22 foot-pounds, using a torque wrench. Plug the electrical connector into the EGR. Install the air intake duct by squeezing the spring clamp and pushing it on. Plug all electrical connectors and the PCV valve hose into the air duct.