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Rx300 Fast Idle?


tta300

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After cleaning the throttle body and idle control valve, the idle is steady but stays at 1000 rmp, a lot faster than it should be. Did I mess up or miss something here? I used the same procedure as I did to my other cars with success. Has anyone done the same before? Please comment.

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  • 3 weeks later...

It has been over two weeks since I cleaned the idle air control valve. The idle speed is back to normal, but I still have the abrupt clunky feeling and noise when shifting from P to D or between R and D. The tranny shifting quality while driving is fine. I wonder if the problem is still related to IACV.

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The tranny has never shifted like this since new; no matter the engine was cold or hot. It all happens after the intake cleaning exercise. I left the negative battary post unbolted last night. The shifting is much better now. Thanks for your advice.

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