Raptor won't stay at 10-15 mph speed after start.

[Fred]

Could an after market tuner such as an SCT with 5 Star Tunes help with this issue?

 

[SlasherMcGee]

I won't complain very much... If it doesn't get fixed they'll need to give me my old truck back. I didn't pay 50k for this. Maybe that's a bit **** but in my opinion this is enough to warrant a defective/lemon truck.

Edit: On that same subject, I was never told when I bought it to let it warmup for a few minutes so it doesn't jerk down the street. I also do not see that in the manual anywhere.

On the same subject, maybe I'm a bit more serious about this as it seems my symptoms are worse than most.. Some say it doesn't occur now that it's warmer out.

As I sit here tonight thinking about this I get more and more angry.. If this is not fixed I really hope they take this truck back and refund me. I'm then going to ask them if they are going to tell the next owner of the truck if they need to let it warmup for a couple of minutes before each drive so that they don't look like Grandma Sophia driving down the road in her sputtering 76' Pontiac?

---------- Post added at 08:25 PM ---------- Previous post was at 08:09 PM ----------

Could an after market tuner such as an SCT with 5 Star Tunes help with this issue?

Interesting you say that because I just spoke with the guy I work with that has the same truck. He had previously stated he never noticed the issue but also went on to say that he has a 5 star tune... So, it would appear a tune does fix this.

 

[SlasherMcGee]

Jerk/studder at low speeds when engine cold on 2013's

I'm posting this in the 2013 Raptor thread(in addition to the thread I have in the "Problems" forum) so that 2013 current and prospective owners know about an issue I'm having. Hopefully the moderators won't move it. Anyone considering ordering this truck should be aware of the problem(And from what I've found in talking to my dealer, several 6.2 owners having problems).

I noticed a few days after I took delivery of my truck the following:

1. Start engine after it's been sitting for long enough to cool the engine. You can let it idle for a bit if you want.(Just not longer than a few minutes to really warm the engine up)
2. Accelerate, or try to accelerate, to 5-10 MPH. Try to keep the speed between 5 and 10 mph. You will notice that when you give it a little gas the truck will not respond immediately.
3. The truck will then jerk forward from idling speed to above 10 MPH, even with very little depression of the gas pedal.
4. To bring the speed back under 10 mph you must completely let off the gas. As the speed decreases back towards 10 mph you can try to give it some gas to “keep it at 10”.
5. You’ll find that giving it a little gas will not change the RPM/speed, but instead the speed will continue to decrease for about a second, almost like the gas pedal is dead to your inputs.(Much like it was in step #2)
6. All of a sudden the truck will “realize” you have the gas depressed again and will jerk back to > 10 mph.
7. This process will continue for a few blocks, unless you accelerate to a higher speed which seems to “clear” the problem(Or maybe warm it up enough?). The problem will occur for about ½ mile at its worst.


-Here are some notes about the issue that I've put together over the last week or so:

*Issue only occurs while trying to keep a low speed (5-15 mph)
*Issue always occurs in the morning when leaving house.
*Issue may not occur if it has been driven within an hours’ time.
*Issue does not appear to be tied to a specific transmission temperature reading.
*Issue may be tied to a specific engine temperature, but hard to say.
*If you let the truck idle for a few minutes before driving, you will not see the issue.
*I’ve been able to reproduce the problem with the transmission stick manually to 1 or 2.
*Issue does NOT appear to be a shifting problem as in some cases I can feel it shift to second gear and the issue continues to occur even while it’s now in second. So it does not appear to be “looking” for second as it’s already found it and still jerking down the street…..
*Problem is dangerous as I was in the parking lot the other day (Before I was aware of the problem) and because a small press of the foot pedal can jerk the vehicle forward you could easily run into something.
* A number of 5.0L engine owners had similar symptoms and a TSB fixed their issue:
TSB 13-1-10

My dealer's service guy(s) have been on the phone with contacts back at Ford and all Ford has had them do is "reflash my adaptive transmission because this surely sounds like a transmission learning problem. The transmission is trying to "find second" and that can be tough to do while it's learning". Well, I can say 2 things to that:

1. The other day the problem occurred even after the transmission "found" 2nd gear and shifted.
2. I had the reflash done and within 10 feet of leaving the dealers parking spot the issue occurred again.


I'm not here to start a Ford/Chevy/Dodge/etc.. war. I'm sure there's been many trucks shipped with issue from all manufactures and I'm not about to say Chevy or Dodge are perfect. But what I am willing to say is that I'm really disappointed in my first buying experience with Ford. Not so much in the issue itself(Although buying a $50k truck only to find it's defective is a bit of a shot to the gut) but more so in how Ford wasn't sure of the root cause and basically said "Hey, just flash his transmission and that might fix it". They did this even though 2 other people with 6.2 L engines have the same issue and recently had their transmission flashed and the issue was NOT RESOLVED(Same dealer) This gave me the opportunity to:

1. Drive the pickup to the dealer during rush hour so they do the flash this morning.

2. Be drove around in the courtesy vehicle because I'm out of a truck for a day.

3. Let the grease monkey(no offense intended with the name) change my seat adjustments that I'd worked on for the first 2 weeks to perfect.

4. Wait 30 minutes for the courtesy delivery vehicle to pick me up from work when he said 10.

5. Get to the dealer, hop in the truck, and first thing I notice is my $50 truck jerking out of the parking lot like a pile of crap.

I hate to speculate but I feel like Ford is just waiting for enough people to complain about the problem before fixing it. But, I'll play devils advocate here and assume that it isn't the same issue the 5.0 owners are seeing.. If that's the case, I guess I can look forward to numerous trips to/from the dealership until this is fixed, or the possibility of getting fed-up and just asking for my money back. It's really hard to walk out to my garage every morning knowing that I either have to let my new $50k pickup idle for 3-4 minutes every morming or face jerking/bucking down street like a moron.

 

[Evanscott29]

I know what you feel cause I feel it too. Mine didn't feel so much as a throttle thing as maybe the transmission hasn't had time to warm up enough yet and it's not being properly lubed. Because similar to you, I tried starting it and allowing it to idle for close to 10 minutes before taking it. And that's the only thing I could think of that is independent of the engine. But I am by no means an expert...

Glad to know I'm not the only one.

 

[jdombrowski1077]

I used to have a similar issue with my current 09 F-150. I did notice that the adaptive transmission sequence tries to "learn" your driving style. It has been explained to me by motorheads and ford mechanics. A lot of the problem is somewhat dependent on some specific driving styles and the six speed transmissions. Depending on how you drive at low speeds most vehicles with automatic six speed transmissions are having difficulty determining with to keep you in first or jump to second at causing either a sluggishness or jerky quality because it seems to be a "gray area" in the computers programming and since you have a drive by wire system it is basing it on the position of the throttle. You can test it out by disconnecting the battery for ten minutes and letting the computer reset its learning process. Then attempt to try different driving styles to see if it remedies the issue.

Now again, I'm not expert or actual mechanic, but I have tried it on other vehicles and have noticed a difference. I'm a lead foot driver and notice that the transmission will stay in higher gears longer on braking, at times skip gears in a down shift or stay in a higher gear while creeping. I feel the programmers have set the system up assuming the settings of how a fuel efficient, relaxed driver would drive and not lead foot speed junkies will drive and the system gets confused. Try to change it up and see if it makes a difference. Hope you solve the problem and please let us know how everything turns out.

IMO, performance vehicles should go back to 4 speed transmissions and not get too crazy with the 5,6,7,or even 8 speed transmissions. Those should be left to the fuel efficient or towing minded drivers.

 

[DrippinRaptor]

Every morning leaving for work, when I put it in reverse to leave the garage it feels like it's running rough. By the time I'm out of the driveway and in drive, it seems to be gone.

 

[SlasherMcGee]

I used to have a similar issue with my current 09 F-150. I did notice that the adaptive transmission sequence tries to "learn" your driving style. It has been explained to me by motorheads and ford mechanics. A lot of the problem is somewhat dependent on some specific driving styles and the six speed transmissions. Depending on how you drive at low speeds most vehicles with automatic six speed transmissions are having difficulty determining with to keep you in first or jump to second at causing either a sluggishness or jerky quality because it seems to be a "gray area" in the computers programming and since you have a drive by wire system it is basing it on the position of the throttle. You can test it out by disconnecting the battery for ten minutes and letting the computer reset its learning process. Then attempt to try different driving styles to see if it remedies the issue.

Now again, I'm not expert or actual mechanic, but I have tried it on other vehicles and have noticed a difference. I'm a lead foot driver and notice that the transmission will stay in higher gears longer on braking, at times skip gears in a down shift or stay in a higher gear while creeping. I feel the programmers have set the system up assuming the settings of how a fuel efficient, relaxed driver would drive and not lead foot speed junkies will drive and the system gets confused. Try to change it up and see if it makes a difference. Hope you solve the problem and please let us know how everything turns out.

IMO, performance vehicles should go back to 4 speed transmissions and not get too crazy with the 5,6,7,or even 8 speed transmissions. Those should be left to the fuel efficient or towing minded drivers.

Trust me when I say I wish this was a simple adaptive transmission issue.. The problem is that it still occurs even after it finds 2nd gear and shifts. Even if I start in second gear the problem occurs. It also occurs after they reflashed my transmission module.

 

[jdombrowski1077]

hmmmm. Interesting. Maybe its a throttle position sensor issue?

 

[banman12]

I am sorry to hear you are having this issue, I hope it gets all figured out! But, I must say, why didnt you save your seat setting once perfected!? That way whenever it is moved, you can just hit the button and have it return to your saved position?

 

[SlasherMcGee]

I am sorry to hear you are having this issue, I hope it gets all figured out! But, I must say, why didnt you save your seat setting once perfected!? That way whenever it is moved, you can just hit the button and have it return to your saved position?

Is that option on the 800 A package? If so that would be awesome.. But, I think it's only in the luxury package???