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I believe that is controlled by the ECM. If the engine is idling too fast, check the EGR valve. It is to the right (from the drivers perspective) of the throttle body. If the EGR valve is damaged or the gasket is missing it could allow the engine to idle far too fast.

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โˆ™ 2005-10-20 14:25:25
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Q: How do you adjust the idle speed on 92 350?
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