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Link to the channel in Zen 👇 https://zen.yandex.ru/id/61b7af0f6f12... Steering wheel re-upholstery. Sevastopol. +79780371323 (Vadim) After warming up the engine in the morning, the idle speed does not drop to operating values. TOYOTA COROLLA LEVIN. Toyota gasoline engines: 3S-FE, 4S-FE, 5A-FE, 4A-FE and so on. Removal, cleaning, maintenance, prevention and repair of the throttle valve and idle valve on Toyotas. How to properly adjust the idle speed. Adjusting the throttle. We are struggling with high revs on a warm engine. And also because of a similar problem, the speed may not rise on a cold engine.