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In most electronic fuel injected vehicles, there is more air getting through than what the IAC provides. This can happen with either holes directly in the throttle plates or by having them partially open (very small percentage). This is still metered air (air the computer is aware of), but it is air getting into the system. Newer vehicles with ...


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When the valve is 'closed', it won't completely block the airflow, otherwise, as you note, the engine would choke and stop. Therefore, even if it's stuck in the closed position, some air will still get through. This should result in a slow idle - but of course if the ECU thinks more air is getting in, it will be putting more fuel in, resulting in rough ...


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You can actually insert programming scripts into your ECU. Palmer Performance has a variety of adapters and computer software. I know they have some kind of script library, or you could try replacing the computer. Have someone check your distributor. If it's throwing check engine codes, take off your valve cover and tighten the studs with a breaker bar but ...



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