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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Throttle stuttering on acceleration
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<blockquote data-quote="91Eunos" data-source="post: 1302230" data-attributes="member: 29616"><p>New Raptor owner and just found this thread.</p><p></p><p>My ‘18 is doing the same thing. In fact, it was so bad when we test drove it, I thought the tires were out of balance or flat spotted. Clearly it got better but what I thought was them fixing a tire balance issue (they said tires were good...and they were/are) was likely just that the truck’s engine had warmed up. It only seems to happen at part throttle, but I do notice it more when the engine is cold. What I’ve recently noticed is that my instant mpg meter is spiking up and down about 1/3 to 1/2 of the total range...very rapidly when I feel it...with constant throttle or even with the cruise control on.</p><p></p><p>It sort of feels like I’m going over rumble strips...like the kind they put across the road to warn you when you’re approaching a stop sign at some intersections. Just a bit of a rough/jerky/bucking feel...not egregious, but definitely noticable.</p><p></p><p>I <u>only</u> run 93 octane or better; typically Shell VPower, but sometimes Chevron (with Techron!) or occasionally whatever name-brand gas Costco is selling this week.</p><p></p><p>I’ve already cleaned the sensors (nothing of note), and will try the 542 plugs this weekend after I do the brakes on my wife’s Jeep...will also go ahead and dump in a bottle of Techron or Seafoam into the tank to ensure the injectors aren’t partially plugged. Since I’ll be in there, I’ll check the sensors again and take the intake system off to see if I can see any oil film...will check the throttle body too. Hell, since I’ll be in that far, will go ahead and run a can or two of CRC cleaner through there to at least partially clear any carbon deposits that may have already formed on the intake valves. Yes, I know the only way to truly and completely clean them is to disassemble the heads...or maybe media blasting, though the risks/downside of that make even me leery.</p><p></p><p>Regardless, will also schedule an appointment with my local dealer to have them test and data log... Worst case scenario is another data point for Ford. Best case is that maybe it’s just plugs or that my truck may just need an updated ECU flash.</p><p></p><p>Will post results.</p></blockquote><p></p>
[QUOTE="91Eunos, post: 1302230, member: 29616"] New Raptor owner and just found this thread. My ‘18 is doing the same thing. In fact, it was so bad when we test drove it, I thought the tires were out of balance or flat spotted. Clearly it got better but what I thought was them fixing a tire balance issue (they said tires were good...and they were/are) was likely just that the truck’s engine had warmed up. It only seems to happen at part throttle, but I do notice it more when the engine is cold. What I’ve recently noticed is that my instant mpg meter is spiking up and down about 1/3 to 1/2 of the total range...very rapidly when I feel it...with constant throttle or even with the cruise control on. It sort of feels like I’m going over rumble strips...like the kind they put across the road to warn you when you’re approaching a stop sign at some intersections. Just a bit of a rough/jerky/bucking feel...not egregious, but definitely noticable. I [U]only[/U] run 93 octane or better; typically Shell VPower, but sometimes Chevron (with Techron!) or occasionally whatever name-brand gas Costco is selling this week. I’ve already cleaned the sensors (nothing of note), and will try the 542 plugs this weekend after I do the brakes on my wife’s Jeep...will also go ahead and dump in a bottle of Techron or Seafoam into the tank to ensure the injectors aren’t partially plugged. Since I’ll be in there, I’ll check the sensors again and take the intake system off to see if I can see any oil film...will check the throttle body too. Hell, since I’ll be in that far, will go ahead and run a can or two of CRC cleaner through there to at least partially clear any carbon deposits that may have already formed on the intake valves. Yes, I know the only way to truly and completely clean them is to disassemble the heads...or maybe media blasting, though the risks/downside of that make even me leery. Regardless, will also schedule an appointment with my local dealer to have them test and data log... Worst case scenario is another data point for Ford. Best case is that maybe it’s just plugs or that my truck may just need an updated ECU flash. Will post results. [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Throttle stuttering on acceleration
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