I just took my truck in this past Friday for the reflash. It is a 4x4 FX4 Scab with 11K miles, build date 03/05. Since the reflash my truck has picked up an EXTREMELY rough shift on the 1-2 shift when under WOT. I think it is actually hitting redline BEFORE it completes the 1-2 shift. It will pull hard in 1st, then hesitate for about a half-second (foot still planted to the floor, but it feels like I let off), then all of a sudden, WHAM! it slams into second gear under full power! I am afraid of breaking something (tranny or transfer case or rearend, etc). It definately did not do this before the reflash, but started right after leaving the stealership (actually as I was pulling out). Guess I will have to take it back into the #@$%&*# dealership... I hate that place. Just wondering if anyone else has experienced the same problem?

BTW, the truck is much more responsive, and does shift quicker most of the time. I am very happy with the throttle response and am pleased that it will downshift now without having to floor it. But it now hesitates pretty bad when coming out of OD into 3rd, which is very annoying. It always has hesitated a little coming out of OD, but now it feels like the truck dies before it completes the shift. Has anyone had this problem also?

 

I think it is just a coincidence....sounds like you have the "rear end clunk" problem that has been talked to death here....do a quick search....the fix entails going back to your dealer...there is a TSB on this problem...they just add some more lube to the rear-end....

 

I have this problem with my 08/05 build date FX4 Screw. It is annoying as **** when you want to pass and the truck just sits around 1200rpm lugging down to about 1000-1100 before it shifts down.

I called the stealer and they said a tranny tech would need to look at it. Well I said hell no you can just rebuild things that break because I'm putting my foot to the floor and it jumps from 4th down to 2nd to pass people.

 

Try resetting the PCM and follow the recommendations in the F-150 Owner’s Guide on page 235 (disconnected battery) to let it re-learn its strategy

 

I've had my shift get strange after loading a tune. This seems to be the learned part of the shift being reset.

If I put a tune in, I always stay away from WOT for at least 40-50 miles.
After the tranny trains in, the shift is nice.

A reflash is an even more invasive function, so I would take it easy for 20-60 miles to let the tranny learn.

Best of luck
Chris

 

I second that FORD141. Have just got my truck back from the dealership and it too got reflashed. I did not notice a difference. I am very dissapointed. Now I can not use my Superchips Tuner cause it does not recognize the PCM. What should I do? I tried calling the dealership and they stated once it gets reflashed it is updated to the latest codes. Therefore can not be put back. There was another post where the guy stated that he has sent tuner back to superchips several times and still does not work.

Man what a pain!!!!!

 

That happend to me, I sent my Superchips back, took about two weeks and then it worked. The pain of sending it in is why I now have the Diablo as you can download the updates.

Still, Superchips will fix it if you send it in, assuming you had returned it to stock before the reflash.
Chris

 

Chris,

I definately returned the stock code before I sent the truck in for service.

How is the DIABLO? Does it work better? As far as updates, you can DL the newest codes online? If there is not much involved with the DIABLO, I will sell the Superchips and get the DIABLO. Thanks chris for all your info.

 

wstahlm80, the rearend clunk is definately not the problem, as it never did this before the reflash. The problem is that the motor is letting off while at the same time trying to shift. There is a clear 1-2 second hesitation at the top of 1st while the motor bogs, then BAM! it hits second. 2-3 WOT shift is beautiful, firm and crisp with no hesitation. I actually think it is hitting rev limiter in 1st before shifting gears. I did drive the truck approximately 20 miles in varying traffic levels and tried it again, same result. Another 5 miles later, same thing. I am afraid to try it again for fear of damaging the tranny.

I did have the battery disconnected over the weekend for some electrical work, I may have to try it again to see if it still does it after driving for a day or so. As far as page 235 in the manual, mine just has some BS about customer service and California emissions.

On a related note, I have a K&N FIPK and a Magnaflow SIDO. Is there anyone who has had the reflash with similar mods? The stealership performed the reflash with my FIPK on, but I may but the stock box back on to see if it makes a difference and to avoid having the dealership blame the problem on mods.

 

Tough call. The Superchips had a better shift out of the box. The Diablo puts your shift to stock, but raises your shift RPMS. So if you just load the tune straight from Diablo, your tranny slips, jerks, does everything but work right.

I run my tranny pressure at 120%. Unlike the superchips, they don't want you to know the LBS, so they just offer percentages between stock and their maximum 200%. On the Superchips there are less choices overall, but more shift choices.


I also tend to lower the maximum shift RPM in the lower gears, as they set it very high. I'm not racing, I just want quicker response and firm (not hard) shifts.

The power on mine is great though, especially on Premium tune.
I get 7% better gas mileage on the Premium tune and pay 6% more for Premium so that works out nicely...

Nothing wrong with either tuner, but sending the SC back just irritated me no end.
I found I was afraid to take the truck near the dealer, fearing I would have to do without the tuner for three weeks and pay the shipping (17.00 bucks last time) if they reflashed it. They didn't tell me they were going to flash it the time they did the reflash.

Hope this helps a little
Chris

 

Other than that, you said that you had sent the tuner in for upgrade and that fix the tuner issue right? They updated it and you were able to use it again? I read a post earlier where the guy sent in tuner several times and still does not work. That is what im worried about and looking to get rid of it and go with the DIABLO.

 

We are hijacking the thread, sorry.

Yep, it worked after they updated it. I sold it on e-bay after I bought a used DP.
Chris

 

Thanks for the INFO. I will call superchips and find out what they will do.

 

I am also having the same hard shift after the reflash.
I did not notice it until I had my Borla SIDO installed which was right after the reflash. I had the truck in for this on friday and they did not find anything. I guess I will have to take the service guy for a ride and show him.

2005 f150 Lariat 4X4 screw 2\05 build date.

 

So whaddaya think, should I just say screw the stealership and order an XCal2? I think I can tune out the shifting problem if I had control of shift points and rev limiters. Does the XCal2 give easy access to these parameters?

js1600: I already have an appointment scheduled for this Friday to have the shifting problem looked at, but you are saying that your dealer couldnt duplicate the problem. Did you only notice the problem at WOT? I am afraid they will take my truck out and *******foot it and it will shift normal and they will just give me the same line. I am just getting really tired of being at the dealer...They all look at me like I'm insane when I come in for a problem. They definately are not friendly or helpful IMO... alright, enough ranting.