shock1wsu has your throttle response gotten any better? it might not be what your looking for but is it better?i just had my 05 scab reflashed last week and it inproved greatly. think about it this way,the mustang and 150 are 2 totally animals try towing 7200lbs with a mustang,the gt does what it is suppose to do"burn rubber and look mean"the 150 is built to work so work it and see how it performs.a week ago i was disappointed in my 04 & 05 fx4 scabs now after the reflash i'm very happy with my 05 and wednesday i'm getting the 04 reflashed.i had to raise hell for the service department to drive my truck to show them that my truck didnt perform like a 300 horse truck.i had problems with towing also yep the flash helped there too.
rsjohns2 the new flash is like a upgrade flash to your bios on your pc. everyday new codes and upgrades come out,most of the time its fixs for problems in the old code.people write scripts so theres bound to be errors then there found and fixed.it might take ford another year or two to get it all worked out the best we can do is hold on and keep up with the fixs.as far as having a reason to get the new flash i was told by my dealer all i have to do is complain about throttle response and if a new one is out i would get it.

 

Thanks for filling us in again, jimtracker. I had mine reflashed in mid-Jan, and performance was improved, but it is not as responsive as it seems it should be. I dug up your reflash number (4U7A-12A650-AAD), and I am going to compare it with the number on my recent reflash.

 

I also had a reflash done in mid December per the TSB that it supposed to take care of the delay and it is still there when the pedal is pressed from idle.

I've seen the following test suggested several times on this site and no one that says they have no throttle delay will try it and report back their results. How about this time?

With the truck in park and at idle, rapidly press the pedal all the way to the floor and release it. How high does your RPM climb? Mine makes it up to about 1000. If it had no delay, it should make it up to at least 4000 RPM, wouldn't you say? My wife's Infiniti with electronic thottle does.

 

My throttle response is great. I believe I have the latest reflash, but not 100% positive. I can spin my tires, but my punch to the pedal is similar to what BLariat describes above. I guess we can chaulk this one up to yet another mystery about these new style trucks.

 

79REK, I will be glad to try it but won't be able to until Friday, as I am out of town right now.

 

how do you find out your reflash#?on my work order it justs says that it was reflashed but didnt give a flash#.

 

79rek heres my results:
04 fx4 scab 5.4L no reflash:
from idle a quick tap on throttle somewhere around 2500rpms:
from idle a frim drop of throttle to about half throttle(without holding)3250rpms:
from idle a quick punch to full throttle 3750rpms:
from 1/4 throttle to 3/4 throttle(with out holding) mid 4000'srpms:
from 1/2 throttle to full throttle(without holding)upper 4000'srpms:
i'll have you know my wife beat me in the head for sitting out there reving up her truck "like an idiot" she said lmao...
05 fx4 scab 5.4L:
some sequence as above:
1)mid 3000'srpms:
2)4250rpms:
3)5000rpms:
4)upper 4000rpms:
5)5000rpms:
no reprecussions for the experment on my truck lmao... neither truck went over 5000rpms but i already knew that(rev limiter). i hope this is what you where looking for if not post and i,ll go back to chaulk board again lol.

 

All Concerned,

Ford has a TSB 04-21-14 that addresses this problem. Covers reprograming the powertrain control module (PCM) using WDS realease B33.9 or higher. Operation number is 042114A. It is covered under warranty. Dropping my 2004 F150 4X4 SC Lariat at the dealer this evening. Will let you know how the out come is...

 

Blariat, Good info and interesting post. However, in the real world things dont work as smoothly as you suggest. I was entering a freeway ramp 2 months after i bought my 04 4.6 (3000 miles on it at the time). i dropped my foot off the pedal and coasted to around 45 mph as i went into the ramp and all was well until some hot shot in a jacked up honda suddenly decided to veer across 3 lanes of traffic from the fast lane to the entry lane. I saw the guy headed across the lanes and in my 97 4.6 f150 i would have had plenty of time to accelerate forward. Anyway, as mentioned my foot was off the pedal as i entered the ramp and when i saw the honda was on a collision path i had to floor it. There was a momentary second of total silence when there was zero throttle response (for a half to full second but 1 second when merging into traffic is significant as people are headed right at your bumper.) Would i buy the 04 ford again? Yes. But there are real and important safety issues with the electronic fly-by-wire throttle that Ford must improve. I now have 6,000 miles on my 04 and i strongly prefer the mechanical linkage in my previous ride (1997 4.6).

 

Crap, mine doesn't respond anything like that and I just had it reflashed in mid-December! They reflashed it per TSB 04-21-14 that is supposed to help with the throttle delay. Like I said, I can put mine all the way to the floor and back and it only raises to just over 1000. If I rev it a little and then punch it, it has almost no delay like yours. I didn't try this before the reflash so maybe it helped with this but it sure did nothing for the responce from idle. How can 2 trucks with the same engine respond so differently? Ford definitely has some issues to correct. I've learned to ease on the throttle a little bit before I punch it to cross oncoming traffic and this helps a lot.

Oh, BTW, tell your wife you were doing scientific research for an important non-profit organization, and thanks for the info.

 

79rek
my 04 & 05 did just like your untell the reflash as of yet i still dont know the flash number cause i cant find it.my 05 was reflashed 1-17-05 and oh yea i'm liking it now.i dont think it has anything to do with the engines it in the programmingwhat i would like to know is the differnce in the script i was reflashed with and yours.i've been searching for a map of the eeprom to no success go figure.the throttle response should be a rather easy problem to fix and alot of guys running tunners are claiming it doesnt help with the delay.so i'm to the conclusion that if thats so the makers of the tunners havent completely mapped out the eeprom and havent found the addy of the reponse.now the 04 has been reflashed and the delay is gone.go back to your dealer and get a reflash and see if it helps some more.i want the eeprom map so i can go to work on the rev limiter i hate falling out at 5000rpms...

 

I don't know if anyone else has run into this but my truck has changed overnight. After passing the 1000 mile mark my truck came to life. Most of the throttle responce issue is gone and I can now spin the tires. It also downshifts the way It should. Has anyone else had this happen? 2005 F-150 SCREW FX4 bone stock 1023 miles 1 month old. I love my truck now. Did ford do this as a breaking in period or is it just a fluke?

 

Do a battery relearn that fixed mine

 

Clean the throttle body and MAF sensor wires.