The lag is real.

Try this. In neutral or park, floor it, then quickly take your foot off and put it flat on the floormat. I'll bet you a dollar the engine does not even respond until your foot is on the floor. That's a full second delay and it gets really bothersome when trying to match speeds in tight traffic on the turnpike.

To make matters worse, drive down the flat road at 55, then lift your foot off. Notice the vehicle does not slow down quickly? The throttle remains open and the engine makes power with your foot 100% off the gas pedal.

Both situations are due to Ford's tuning of the "throttle by wire". Both are contrary to the response a "true driver" would want.

 

In my (now 2 2010's) there was a lag, some of it is down to the programming of the "drive by wire" throttle system. But my first truck needed a reflash of the tranny PC. worked WONDERS. I highly recommend.

Also check out the TSB for "Uncommand torquee converter lockup" mine did that as well. after the warranty work the truck was a whole new beast, tranny wise.

 

Cujet, that's exactly how mine works .I just spoke to the dealer and they will reprogram the system. He's done that often. If more is needed I'll take it one step further.

 

Where would I find info on that TSB??

 

TSB 09-20-14

 

There's a tab for "Recalls & TSBs" at the top of the page.

 

100% correct... and welcome to the world of the 5.4 3V engine. This is exactly why I unloaded my 2005 F150 King Ranch 5.4 3V... the engine was absolute junk because of all of this. Nothing could fix it and it was awful. My 5.4 2V engines were MUCH MUCH better.

Also, I noticed that many posts above say that they don't have an issue with their truck. Of those that said that, many were the 4.6L version of the F150. From my experience, this 4.6L 'feels' much better than the 5.4 3V. There is a REAL ISSUE with the 5.4 3V and that is being addressed now with the new F150 engines. There is a reason that the 5.4 3V did not last long. Ford has had many complaints about the lack of throttle response, no torque, and poor gas mileage on the 5.4 3V. This is exactly why Ford had these new engine designs started a few years back. I am in line for a 6.2L 2V engine in whatever I can find. Finally Ford is back in the game with good engines... too bad they didn't get these in sooner!!

 

Here is how i view this issue. as i had it as well.- 2009 plat.

the delay is there, for intentional purposes in my opinion. the torque management system and the like in other manuf vehicles, is threre to help with damaging or premature wear. While i love to be thrown back in the seat ( i am 32. and still like to go fast) its a truck. and with most hitting the 6K mark. well. even throttle response twenty percent better than where its at now. still wont make it a rocket. its doesnt need to be.

i installed an EDGE CST, and new shocks before my new tire install. Went to 285-60's
have it set to level.3

what a difference in drivability. throttle response is way better. shifting is way better.

the only setting i changed was to lower red line. and change tire size.

programmer , eventhough i dont WOT from every stop like my 16-29 yo days!!!. its still night and day over stock..

i am running my 3rd tank of 93 oct. and avg now that it is cold ( i only idle 1 min in the morn, its plugged in - factory coolant recirc heater) is around 14 best. before it got way cold, it was around 16.5

i plan on waiting to low tank. filling with 89 or 87 and then setting to lower tune. probably towing tune which i beleive is a non prem fuel tune. ill see what my mileage is then.

truck runs 1880rpms running 75. although i only drive about 70 max usualy or take two lane as far as i can before interstate to cross over into iowa. running 55-58. i still get 18. 18.5avg.

im sure all of the winter blend has found its way in all the tanks at stations i use. usualy shell.

everyone have a great week.

 

Problem with that site is that it's really outdated. They don't have any "10" TSB's listed yet. I don't know why it takes so long to get the newer TSBs.

 

i have a afe intake, magnaflow exhaust and hypertech programmer and it gets up and goes with my tundra just about the same. the tundra is still quicker but not much. i plan on adding some custom tunes eventually.

 

Exaclty Cub Cadet. I agree completely.

 

Did you notice a difference once the AFE was installed and is it loud? I'm pretty sure I'm going with the AFE over the Volant.

 

I had the same problem on my 5.4 when I bought it 2 months ago. Here's what I did to fix the problem. Turn the key to the on position but DON'T start the engine. Now press the gas peddle to the floor SLOWLY and let it come up/back as fast as you can, turn key to the off position. Now do this two more times. Now start the engine and go for a test drive then report back here with your findings!

Here are the steps:

1) turn the key in the ON position (don't start the engine),
2) press the gas pedal down slowly all the way down,
3) let go of the gas pedal fast so it come back up,
4) turn key into the OFF position,
repeat steps 1-4 two more times then start engine.

This is called "The Diamondbird" mod after the screen name of the guy who 'invented' it over on another forum and it should work on ANY fuel injected vehicle...including your motorcycles!

 

I'm not sure why it works, but it def seems to help w/the throttle lag.

 

Ok, I took the bait.
Last I checked, I was not a crack head, but it definitely did something with TR, shocked me actually.