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My idle stays high even after it's warmed up. If I unplug the IAC connecter it drops to 850. Any ideas?
 

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Look for vacuum leaks - Take a pliers and pinch each of the vacuum hoses to see if any of them change the idle when pinched. If so (other than the ISC, which is supposed to drop when air is removed, hence the drop in idle when you disconnect it), you have found the circuit with your vacuum leak - bad hose, gasket etc.
 
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