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Toyota Repair/Idle Air Control Valve


I Have 97 Toyota T100 3.4L 4wd SR5 Xtra cab truck with a 5 speed tranny. The odometer reads 103885 miles on her. The truck has a high idle that stays up even after its warmup cycle. I live out here in the Pacific On the Island of GUAM. I tried spraying some carb choke cleaner, but still no change. What would be the procedure for checking if IAC valve is stuck, and what type of cleaner should i use. Thank you.

The IAC valve is attached to the bottom of the throttle body, the valve can be removed with the throttle body off, you can clean both the T/B and the IACV using a carbon removing spray and a brush, the small revolving valve inside the IAC should move freely after cleaning, you should be able to push it all the way open and close leaving a small gap of about 1/16"

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Ted Ritter


I have more than 28 years experience as toyota technician, I will be able to answer most questions related to the Toyota product line up to the present year models,I am located in the US but welcome questions from other regions of the world. When asking a question please provide specific information: year,model, engine,transmission information. Provide as much information as possible including a brief repair history if possible. I have been a volunteer here for more ten years an have answered over 16,000 questions helping Toyota owners with their problems and save thousands of dollars without any compensation, some of my answers are published on many other websites including google and various automotive forums. DONATIONS ARE VERY MUCH APPRECIATED, IF YOU HAVE RECIEVED HELPFUL INFORMATION PLEASE MAKE A DONATION. AS OF TODAY (JULY 22, 2014) ALL REQUESTED GRAPHICS, ILLUSTRATIONS, DIAGRAMS, PHOTOS, WILL REQUIRE THE MINUMUM DONATION UP FRONT.


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