NOTE: No physical adjustment of the IAC valve assembly is required after installation. START the engine and allow it to reach operating temperature. Connect the IAC valve electrical connector.Ħ. Install the IAC valve attaching screws, and tighten to 3.0 Nm (27 in lb).ĥ. Lubricate the IAC valve O-ring with clean engine oil.Ĥ. The force required to retract the pintle of a new valve will not cause damage to the valve.Ģ. If greater than 28 mm, use finger pressure to slowly retract the pintle. If installing a new IAC valve, measure the distance between the tip of the pintle and the mounting flange. IAC valve pintle shape and diameter are designed for specific application.ġ. NOTE: If installing a new IAC valve, be sure to replace with an identical part. Inspect the IAC valve O-ring for cuts, cracks or distortion. If the air passage has heavy deposits, remove the throttle body for complete cleaning. Shiny spots on the pintle or seat are normal, and do not indicate misalignment or a bent pintle shaft. It is an extremely strong solvent, and not necessary for this type of deposit. DO NOT use a cleaner that contains Methyl Ethyl Ketone. Use carburetor cleaner and a parts cleaning brush to remove carbon deposits. Clean the IAC valve O-ring sealing surface, pintle valve, seat and air passage. The force required to move the pintle may damage the threads on the worm drive.Ĥ. Remove the IAC valve attaching screws.ĬAUTION: On IAC valves that have been in service, DO NOT push or pull on the old IAC valve pintle. Disconnect the idle air control (IAC) valve electrical connector.Ģ. Let me know if you have any other questions.ġ. I attached pictures and the procedure for you for the replacement. However, you can always contact one of the certified technicians from Yourmechanic to replace your idle control valve for you.The IAC is on the throttle body. Even beginners should be able to replace this valve. Having a properly working idle control valve will make a huge difference in the driveability of your vehicle. Depending on your particular vehicle and ambient air temperature, your idle speed should hold steady between 550 RPMs (at the very lowest when it’s hot outside) and 1,000 RPMs (at the highest and at lower temperatures). Tighten down the bolt so that any engine vibration won’t rattle it loose. Reattach the negative battery cable to the battery. Ensure the terminal is making a proper connection and the clip is fully engaged to secure this connection. Reattach the wiring harness to the valve. Warning: Do not overtighten the bolts because it may cause a leak or improper function with the system.Use your socket and ratchet to snug them down gradually one by one. Then put the new valve in place and install the retaining bolts, hand tightening them to the seat. Verify that the wiring terminals, retaining bolt pattern, and seat placement are all the same. First, compare the old valve you are replacing with the new valve. This assures a clean seal between the valve and its seat. With the seat for the valve exposed, use the throttle body cleaner to clean the area you will attach the new valve to. With the bolts and wires now removed, the valve should just pull out of place. Remove each of the valve’s retaining bolts. Step 4: Remove the old idle control valve. There will be a clip or a tab to disconnect, and it might be easier to gently remove it with a pair of pliers. Locate the wiring harness connected to the valve and release the electrical terminal from the valve. The valve will nearly always be located on the intake manifold. Your vehicle’s owner’s manual will have information on the exact location. The location of the idle control valve will depend on the make and model of your vehicle. Disconnect the negative battery cable from the battery and set it aside. Part 1 of 1: Replacing an idle control valve. Newer models are less likely to be serviceable or capable of being cleaned. Sometimes the valve itself needs to be replaced, while other times cleaning the valve and other involved components around it can improve function and communication between the valve and the computer. These valves can also accumulate carbon buildup which causes issues with the valve and surrounding components. This steady pace is mandated by the vehicle’s idle control valve, which is also known as an idle air control valve.Ī failing valve can cause the check engine light to come on, rough idling, stalling, and sudden increases or decreases of RPMs while at a stop. Your vehicle’s idle speed should remain the same while at a complete stop. With the vehicle at a stop and no gas being applied by the driver, the computer must maintain a minimum number of RPMs so that the engine is still on and ready to go at any moment. The speed of an engine’s RPMs while at a stop is called idle or idle speed.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |