Toyota 23814-62050 Pipe, Fuel Delivery

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1. Check the IAC valve for correct operation by bridging terminals TE1 and E1 and raising the engine RPM to 900-1300 for ten seconds, then releasing the throttle to ensure the idle returns to specified RPM. 2. Disconnect the air assist hose from the IAC valve and check if the idle speed lowers to approximately 500 RPM. If it remains higher, there may be an air intake leak. 3. Measure the resistance between terminals +B and RSC, and then +B and RSO. If incorrect, replace the IAC valve.

1. Relieve the fuel pressure and disconnect the cable from the negative terminal of the battery. 2. Disconnect the cold start injector electrical connector. 3. Place a container under the banjo fitting and remove the banjo bolt and sealing washers. 4. Remove the cold start injector mounting nuts and the injector.

1. Relieve the fuel pressure and detach the cable from the negative terminal of the battery. 2. Detach the vacuum sensing hose from the regulator. 3. Place a metal container or shop towel under the fuel return hose. 4. Squeeze the hose clamp and detach the fuel return hose from the regulator. 5. On four-cylinder engines, detach the fuel return line and remove the two regulator bolts. On 3.0L V6 engines, use a wrench to unscrew the regulator. On 3.4L V6 models, the regulator is located on the rear of the intake plenum. 6. On 2.4L, 2.7L, and 3.4L engines, remove the pressure regulator mounting bolts and detach the regulator from the fuel rail. On 3.0L engines, unscrew the regulator and retrieve the O-ring. 7. Use a new O-ring and ensure the pressure regulator is installed properly on the fuel rail. The remainder of installation is the reverse of removal.