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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
4X4 Randomly Engaging and Loud Noise
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<blockquote data-quote="Raptor911" data-source="post: 1462534" data-attributes="member: 7538"><p>The front hubs engage when you go into 4-wheel drive. The mechanisms works via vacuum. So if your vacuum is faulty then the truck will slip into 4-wheel drive. The grinding noise you hear is the IWE trying to engage. take it to a dealer and tell them to check the IWE. They will know what to do.</p></blockquote><p></p>
[QUOTE="Raptor911, post: 1462534, member: 7538"] The front hubs engage when you go into 4-wheel drive. The mechanisms works via vacuum. So if your vacuum is faulty then the truck will slip into 4-wheel drive. The grinding noise you hear is the IWE trying to engage. take it to a dealer and tell them to check the IWE. They will know what to do. [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
4X4 Randomly Engaging and Loud Noise
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