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How to Replace an EGR Valve for 2000 Toyota RAV4

The exhaust gas recirculation (EGR) valve in your 2000 Toyota RAV4 is an exhaust intake regulator attached to the intake manifold of the engine. First introduced in the early 1960s, it regulates the mixture of fuel and exhaust (oxygen) entering into the engines combustion chambers. It operates by allowing measured amounts of exhaust to enter the combustion chamber, thus reducing the temperature within the chamber during combustion. It has become a vital part in improving fuel efficiency and reducing smog.

Instructions

1

Open the hood and locate the EGR valve, which is mounted on the left-rear of the intake manifold near the firewall. Leave the battery plug in, but use precaution not to contact the posts with any tools.

2

Disconnect the air intake tube leading to the inside-left fender well and attached to the intake manifold. This will provide for better access for replacing the EGR valve.

3

Unplug the single-prong electrical connection from the EGR valve by hand. Disconnect the rubber vacuum tube and inspect both of these parts for excessive wear or cracking. Replace these parts as necessary.

4

Remove the two EGR mounting bolts located on the valve using a socket wrench. Gently tap the valve to break the seal using a hammer or rubber mallet. Remove the old EGR valve and scrape away the old gasket using a paint scraper. Be careful not to allow any debris to enter the engine block.

5

Apply a thin bead of high-temperature-resistant gasket sealer onto the new gasket. Place the gasket with sealant down, directly onto the manifold opening. Do not to disturb the gasket placement, which can cause a void. Be sure that the mounting bolt holes are properly aligned so that the replacement valve will seat and mount properly.

6

Carefully install the new EGR valve into the manifold opening. Secure the valve in place with the two mounting bolts. Reattach the rubber vacuum tube and the single-prong electrical connection. Reconnect the air intake tube.

7

Disconnect both battery cables using a crescent wrench, which will reset the electrical system and check-engine light indicator. Keep the battery disconnected for at least six hours before reconnecting it. Then reconnect the battery, start the engine and check to see if the check-engine light remains off. Test the repair by turning the vehicle off and on several times while observing if the check-engine warning light comes on.