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Throttle Response Issue - Power Cutting Out
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<blockquote data-quote="smurfslayer" data-source="post: 1439210" data-attributes="member: 21926"><p>I was coming home from the gym this morning and will try to describe what happens.</p><p></p><p>pre-start and warm up the truck because it’s freakin’ cold out. Truck was only off for about 75 minutes, at operating temp when I got in. Navigate the maze to exit parking lot, get on the main road. I have 2 stop signs in short succession, and am in 4A and have turned off auto-stop. issue 1: stop at first stop sign. advance to 2nd, to turn right, make my complete stop, jump to gas pedal and go. only I don’t go, I sit there for probably 2 tenths, maybe a quarter second, no movement at all. None. Then it takes off issue 2: boost comes on, overwhelms the tires despite being in 4a and ... cut power <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite4" alt=":mad:" title="Mad :mad:" loading="lazy" data-shortname=":mad:" /><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite4" alt=":mad:" title="Mad :mad:" loading="lazy" data-shortname=":mad:" /><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite4" alt=":mad:" title="Mad :mad:" loading="lazy" data-shortname=":mad:" /> <-- here, yes, I was kind of loose in the seat because just like the opening dirt / gravel course at Raptor Assault, when it cuts power for losing traction, it’s a non-subtle action, basically chopping the throttle completely until the computer thinks there’s traction. Not thrown forward, but well... <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite10" alt=":oops:" title="Oops! :oops:" loading="lazy" data-shortname=":oops:" /> This is not some simple wheelspin comparison algorithm, once t/c cuts power, it’s basically binary, so there really isn’t a way for the rear to be spinning or rotating faster than the front. There’s way more going on than simple wheel spin comparison logic. </p><p></p><p>The initial delay in movement is total; that is, it’s not the turbos spooling, it’s the truck’s computer throwing the middle finger at you in response to you pressing the gas pedal.</p><p></p><p>I think issue 1 is just poor throttle by wire programming here, and I’ve observed this from day 1. Issue 2 is me playing fast and loose with my traction budget and going into traction ‘overdraft protection’ so to speak. Issue 1 bugs me and I think is not good. issue 2... well, I suppose I could turn off t/c and see if I am able to fare any better.</p></blockquote><p></p>
[QUOTE="smurfslayer, post: 1439210, member: 21926"] I was coming home from the gym this morning and will try to describe what happens. pre-start and warm up the truck because it’s freakin’ cold out. Truck was only off for about 75 minutes, at operating temp when I got in. Navigate the maze to exit parking lot, get on the main road. I have 2 stop signs in short succession, and am in 4A and have turned off auto-stop. issue 1: stop at first stop sign. advance to 2nd, to turn right, make my complete stop, jump to gas pedal and go. only I don’t go, I sit there for probably 2 tenths, maybe a quarter second, no movement at all. None. Then it takes off issue 2: boost comes on, overwhelms the tires despite being in 4a and ... cut power :mad::mad::mad: <-- here, yes, I was kind of loose in the seat because just like the opening dirt / gravel course at Raptor Assault, when it cuts power for losing traction, it’s a non-subtle action, basically chopping the throttle completely until the computer thinks there’s traction. Not thrown forward, but well... :oops: This is not some simple wheelspin comparison algorithm, once t/c cuts power, it’s basically binary, so there really isn’t a way for the rear to be spinning or rotating faster than the front. There’s way more going on than simple wheel spin comparison logic. The initial delay in movement is total; that is, it’s not the turbos spooling, it’s the truck’s computer throwing the middle finger at you in response to you pressing the gas pedal. I think issue 1 is just poor throttle by wire programming here, and I’ve observed this from day 1. Issue 2 is me playing fast and loose with my traction budget and going into traction ‘overdraft protection’ so to speak. Issue 1 bugs me and I think is not good. issue 2... well, I suppose I could turn off t/c and see if I am able to fare any better. [/QUOTE]
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Ford Raptor Forums - General Information
Ford Raptor Maintenance Forum
Throttle Response Issue - Power Cutting Out
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