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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Engine stumble under light boost on freeway - code P0301
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<blockquote data-quote="91Eunos" data-source="post: 1880260" data-attributes="member: 29616"><p>I know there are a couple similar threads out there, but my situation is a bit odd.</p><p></p><p><strong>Background: </strong> Truck religiously maintained, and only super unleaded/93 octane or better ever put in the tank. Have had cam phasers replaced twice, and IWE done once…all under warranty.</p><p></p><p><strong>Situation:</strong> My wife was driving my truck down from Ft Worth a couple weeks ago and said she got a flashing check engine light, with a noticeable loss of power, then the light stopped flashing and the truck was driving normally. No codes thrown though, which I thought was odd.</p><p></p><p>Fast forward to last week, and I’m driving in to work in typical San Antonio early-morning traffic on I35…. i.e. full throttle followed by full stop, LoL. Got the flashing light and could feel the engine stumble, along with a huge power loss. First thought was an intake hose came off or collapsed, but as I was making my way over to pull off the highway, after about 30 seconds or so, it cleared up and the truck drove normally.</p><p></p><p>Later that day, I grabbed my OBD-2 reader and got a <strong>P0301 code: misfire on cylinder #1</strong></p><p></p><p>No issues since, and I’ve intentionally gotten into the boost a few times to see if it’ll trigger again. Nothing.</p><p></p><p>It’s been almost 40K miles since the last time I changed the spark plugs, so I’ll do that today, but anything else I should be looking for?</p><p></p><p>Any easy way I can check the coils at home?</p><p></p><p>—break—</p><p></p><p>Also, I have noticed an occasional big ‘clunking’ noise that you can feel when putting the truck into gear after reversing out of a parking spot lately. Only when it’s cold. Likely nothing to worry about, but any thoughts on getting the transmission/rear diff looked at?</p><p></p><p>Will mention it if I wind up taking it into the dealer for this engine code regardless.</p></blockquote><p></p>
[QUOTE="91Eunos, post: 1880260, member: 29616"] I know there are a couple similar threads out there, but my situation is a bit odd. [B]Background: [/B] Truck religiously maintained, and only super unleaded/93 octane or better ever put in the tank. Have had cam phasers replaced twice, and IWE done once…all under warranty. [B]Situation:[/B] My wife was driving my truck down from Ft Worth a couple weeks ago and said she got a flashing check engine light, with a noticeable loss of power, then the light stopped flashing and the truck was driving normally. No codes thrown though, which I thought was odd. Fast forward to last week, and I’m driving in to work in typical San Antonio early-morning traffic on I35…. i.e. full throttle followed by full stop, LoL. Got the flashing light and could feel the engine stumble, along with a huge power loss. First thought was an intake hose came off or collapsed, but as I was making my way over to pull off the highway, after about 30 seconds or so, it cleared up and the truck drove normally. Later that day, I grabbed my OBD-2 reader and got a [B]P0301 code: misfire on cylinder #1[/B] No issues since, and I’ve intentionally gotten into the boost a few times to see if it’ll trigger again. Nothing. It’s been almost 40K miles since the last time I changed the spark plugs, so I’ll do that today, but anything else I should be looking for? Any easy way I can check the coils at home? —break— Also, I have noticed an occasional big ‘clunking’ noise that you can feel when putting the truck into gear after reversing out of a parking spot lately. Only when it’s cold. Likely nothing to worry about, but any thoughts on getting the transmission/rear diff looked at? Will mention it if I wind up taking it into the dealer for this engine code regardless. [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Engine stumble under light boost on freeway - code P0301
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