was told.idle control valve its not

I have checked for a vac leak couldn't find one done a flash code test nothing came up cleaned the idle control valve but still my car is fine when its cold but when it warns s it idles at 1800rpm turn the car off and back on it hunts twice the high idle again! Its not jumping in the rev after that it just stays the same 1800rpm melting my brain! Its eating the juice but when let on feels fine not drinking oil or anything
 
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