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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
New turbo sounds after cam phasers replaced
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<blockquote data-quote="FordTechOne" data-source="post: 1894314" data-attributes="member: 35543"><p>I thought you had a 2019? VCT rattle at startup does not affect engine performance nor will it throw a CEL.</p><p></p><p>There is no timing chain idler, so not sure what they’re trying to refer to. It sounds like they may have forgot to install the bypass valve hose that runs to the intake. If that’s not attached you’ll hear the whoosh sound you described when the throttle closes. Since they’re taking it back apart hopefully they catch that and install it correctly. I’d also recommend paying for a replacement thermostat; that is the reason some people have experienced overheating after a repair. When the t-stat is exposed to open air it can stick, and with yours being opened up twice there chances are higher.</p></blockquote><p></p>
[QUOTE="FordTechOne, post: 1894314, member: 35543"] I thought you had a 2019? VCT rattle at startup does not affect engine performance nor will it throw a CEL. There is no timing chain idler, so not sure what they’re trying to refer to. It sounds like they may have forgot to install the bypass valve hose that runs to the intake. If that’s not attached you’ll hear the whoosh sound you described when the throttle closes. Since they’re taking it back apart hopefully they catch that and install it correctly. I’d also recommend paying for a replacement thermostat; that is the reason some people have experienced overheating after a repair. When the t-stat is exposed to open air it can stick, and with yours being opened up twice there chances are higher. [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
New turbo sounds after cam phasers replaced
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