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    '99 Sport Idle Air Control (IAC) Valve

    I purchased a IAC valve and will be installing it tomorrow on my '99 4.0L OHV Explorer Sport. On the IAC there is a black knob the side. Do I need to adjust it? There are no tips or instructions in the box. Any heads up would be great! Thanks fellers....
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    '99 4.0L OHV Engine Hum 5-speed manual

    When the engine is warm, occasionally i have a deep hum coming from under the hood. it only occurs when i am idle [with the clutch in or out] or below 1750 RPM in first gear. as I speed up it goes away. there is no mechanical loss or electrical loss with the hum...it is just annoying and deep...
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    Front & Rear Recovery Hooks

    I have a '99 explorer sport and I am installing recovery hooks to the front and rear. I'm going right to the frame and through both bumpers. I'd like to fully remove the bumpers to work on them but I have no experience with air bag systems (which are connected to the bumpers). Is there...
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