2011+ 55-60mph 5.0 Shuddering and EcoBoost Engine Miss/Loss of Power - Possible Fixes
#2561
Senior Member
I really don't worry about it in the slightest. The only time I might feel the shudder is if I'm close to a shift point and go up a little hill. To me, if doesn't feel any different than other vehicles I've been driven, including my girlfriends 2012 Civic. There is a point where the computer is trying to decide whether or not to lock the torque converter, or force a downshift.
#2562
Senior Member
I'm with you HS, I don't worry about it any more. I had the CAC replaced and that solved the dying in the rain problem. I get good milage (18 - 22) depending on how often I stomp the skinny down and how fast I'm driving. There are a lot of variables on that MPG thingy. Old folk get the best, young folk get the worst......as a rule.
D
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#2563
Senior Member
I really don't worry about it in the slightest. The only time I might feel the shudder is if I'm close to a shift point and go up a little hill. To me, if doesn't feel any different than other vehicles I've been driven, including my girlfriends 2012 Civic. There is a point where the computer is trying to decide whether or not to lock the torque converter, or force a downshift.
The accord, if a v6 (not sure about the 4), will have cylinder deactivation also. I wonder if that might be what your feeling on the accord. Transition from all to half cylinders and vice versa.
Sorry to get so off topic.
#2564
Fully retired now!
5.0 Stumble
Well dammit, was hoping my 5.0 was completely safe. lol The transmission was my only reservation in buying the F150, as I had heard they had some issues. Was hoping they'd got the 6 speed straightened out by 2013. No issues yet, but less than 3k miles, so we will see. Traded for this one because the 08 gmc I had paid off was having misfire issues that dealer couldn't or wouldn't resolve. Can't afford to trade again, so this truck needs to be problem free.
Good luck to those having problems.
Good luck to those having problems.
It just cost me another $250 for the dealer to "resolve" the problem, with them saying it isn't covered under warranty. Their claim is that I had fuel contamination. I had used only Shell or AAFES fuel (I work at Ft. Lewis), who both denied any problem with their fuel (no one else had fuel issues, so I tend to believe that). Anyway, the dealer initially said it was my K&N air filter (proven to be wrong, because the problem still existed even after the filter was changed). Dealer then swapped all the plugs out, saying I had fuel or additive contamination. The only things I've added to the fuel was octane booster on a cross-country trip five months ago. They still can't explain why it only happens during the ranges I mentioned, rather than throughout the entire power range, as should happen if either fuel contamination or plug fouling exists. Mileage was relatively consistent, about 16 in town and 19ish on the highway.
It also has an interesting small jerk when downshifting from 4th to 3rd, with little pedal pressure involved. Doesn't happen all the time, just on level terrain. No 4WD involved in either situation.
Has anyone else gotten different excuses from their dealers? Perhaps found the real problem? The dealer here claims no TSBs or info on problems, in spite of being advised of the more than 100 writeups on this and other forums.
I've been a Ford fan for many years, but this issue is really pissing me off, and I'm almost ready to move to the new Ram 1500 that gets 23-25MPG (probably about 20 for the 4WD version).
Any insight is appreciated.
#2565
Senior Member
Is it still doing it after the dealers "resolution". It does sound like either a misfire or torque converter shudder (I have not personally experienced it, just going off previous experience with those issues, which both seemed to show up at low rpm in overdrive). Why'd you use octane booster? And did it seem to help the issue?
#2566
I've run into a similar problem. I've got an 11 SCREW FX4 with the 5.0, 3.73, with just over 25K miles. I had the hesitation under the following conditions: 1400-1800 RPM, about 54-60MPH. The stumble/hesitation occurred with light pedal pressure on a fairly regular basis. It had been going on for about 2-3 months. My driving during this time has been in the Tacoma, WA area, with relatively level terrain. I have a cab-high canopy, FWIW.
It just cost me another $250 for the dealer to "resolve" the problem, with them saying it isn't covered under warranty. Their claim is that I had fuel contamination. I had used only Shell or AAFES fuel (I work at Ft. Lewis), who both denied any problem with their fuel (no one else had fuel issues, so I tend to believe that). Anyway, the dealer initially said it was my K&N air filter (proven to be wrong, because the problem still existed even after the filter was changed). Dealer then swapped all the plugs out, saying I had fuel or additive contamination. The only things I've added to the fuel was octane booster on a cross-country trip five months ago. They still can't explain why it only happens during the ranges I mentioned, rather than throughout the entire power range, as should happen if either fuel contamination or plug fouling exists. Mileage was relatively consistent, about 16 in town and 19ish on the highway.
It also has an interesting small jerk when downshifting from 4th to 3rd, with little pedal pressure involved. Doesn't happen all the time, just on level terrain. No 4WD involved in either situation.
Has anyone else gotten different excuses from their dealers? Perhaps found the real problem? The dealer here claims no TSBs or info on problems, in spite of being advised of the more than 100 writeups on this and other forums.
I've been a Ford fan for many years, but this issue is really pissing me off, and I'm almost ready to move to the new Ram 1500 that gets 23-25MPG (probably about 20 for the 4WD version).
Any insight is appreciated.
#2567
Haulin Bass!
I've run into a similar problem. I've got an 11 SCREW FX4 with the 5.0, 3.73, with just over 25K miles. I had the hesitation under the following conditions: 1400-1800 RPM, about 54-60MPH. The stumble/hesitation occurred with light pedal pressure on a fairly regular basis. It had been going on for about 2-3 months. My driving during this time has been in the Tacoma, WA area, with relatively level terrain. I have a cab-high canopy, FWIW.
It just cost me another $250 for the dealer to "resolve" the problem, with them saying it isn't covered under warranty. Their claim is that I had fuel contamination. I had used only Shell or AAFES fuel (I work at Ft. Lewis), who both denied any problem with their fuel (no one else had fuel issues, so I tend to believe that). Anyway, the dealer initially said it was my K&N air filter (proven to be wrong, because the problem still existed even after the filter was changed). Dealer then swapped all the plugs out, saying I had fuel or additive contamination. The only things I've added to the fuel was octane booster on a cross-country trip five months ago. They still can't explain why it only happens during the ranges I mentioned, rather than throughout the entire power range, as should happen if either fuel contamination or plug fouling exists. Mileage was relatively consistent, about 16 in town and 19ish on the highway.
It also has an interesting small jerk when downshifting from 4th to 3rd, with little pedal pressure involved. Doesn't happen all the time, just on level terrain. No 4WD involved in either situation.
Has anyone else gotten different excuses from their dealers? Perhaps found the real problem? The dealer here claims no TSBs or info on problems, in spite of being advised of the more than 100 writeups on this and other forums.
I've been a Ford fan for many years, but this issue is really pissing me off, and I'm almost ready to move to the new Ram 1500 that gets 23-25MPG (probably about 20 for the 4WD version).
Any insight is appreciated.
It just cost me another $250 for the dealer to "resolve" the problem, with them saying it isn't covered under warranty. Their claim is that I had fuel contamination. I had used only Shell or AAFES fuel (I work at Ft. Lewis), who both denied any problem with their fuel (no one else had fuel issues, so I tend to believe that). Anyway, the dealer initially said it was my K&N air filter (proven to be wrong, because the problem still existed even after the filter was changed). Dealer then swapped all the plugs out, saying I had fuel or additive contamination. The only things I've added to the fuel was octane booster on a cross-country trip five months ago. They still can't explain why it only happens during the ranges I mentioned, rather than throughout the entire power range, as should happen if either fuel contamination or plug fouling exists. Mileage was relatively consistent, about 16 in town and 19ish on the highway.
It also has an interesting small jerk when downshifting from 4th to 3rd, with little pedal pressure involved. Doesn't happen all the time, just on level terrain. No 4WD involved in either situation.
Has anyone else gotten different excuses from their dealers? Perhaps found the real problem? The dealer here claims no TSBs or info on problems, in spite of being advised of the more than 100 writeups on this and other forums.
I've been a Ford fan for many years, but this issue is really pissing me off, and I'm almost ready to move to the new Ram 1500 that gets 23-25MPG (probably about 20 for the 4WD version).
Any insight is appreciated.
Never mind that they crippled the ECU on our trucks. I've already posted a vid of it, but here's an experiment any one of you can do. Go out to your truck, open hood, remove plastic engine cover and unplug 1, or 2, or 3 coil wires. Now, start your truck. Yeah, it's going to run like tihs, because, well, it running on less cylinders. NOW, go take it for a drive. When you get back tell me, did your truck throw any codes? It should have. The CEL should have been lit up like a christmas tree for misfire and coil continuity. Alas, mine throws not one code. Ford explained this to me as a "feature" so as to not alarm owners of issues. BWAHAHAHA.....I've since turned said video over to my lawyer and the NTHSA.
The following users liked this post:
canddmeyer (05-01-2013)
#2568
LOL...Ford has tried everything under the sun to pin the issues on ME. Giving me letters explaining that my driving style (very conservative for best MPG's) was causing the TCM to learn poor shift strategies. Me using 87 octane fuel. Me towing a 4000# boat (apparently, according to Ford, I picked the wrong vehicle for towing a boat).
Never mind that they crippled the ECU on our trucks. I've already posted a vid of it, but here's an experiment any one of you can do. Go out to your truck, open hood, remove plastic engine cover and unplug 1, or 2, or 3 coil wires. Now, start your truck. Yeah, it's going to run like tihs, because, well, it running on less cylinders. NOW, go take it for a drive. When you get back tell me, did your truck throw any codes? It should have. The CEL should have been lit up like a christmas tree for misfire and coil continuity. Alas, mine throws not one code. Ford explained this to me as a "feature" so as to not alarm owners of issues. BWAHAHAHA.....I've since turned said video over to my lawyer and the NTHSA.
#2569
Senior Member
LOL...Ford has tried everything under the sun to pin the issues on ME. Giving me letters explaining that my driving style (very conservative for best MPG's) was causing the TCM to learn poor shift strategies. Me using 87 octane fuel. Me towing a 4000# boat (apparently, according to Ford, I picked the wrong vehicle for towing a boat).
Never mind that they crippled the ECU on our trucks. I've already posted a vid of it, but here's an experiment any one of you can do. Go out to your truck, open hood, remove plastic engine cover and unplug 1, or 2, or 3 coil wires. Now, start your truck. Yeah, it's going to run like tihs, because, well, it running on less cylinders. NOW, go take it for a drive. When you get back tell me, did your truck throw any codes? It should have. The CEL should have been lit up like a christmas tree for misfire and coil continuity. Alas, mine throws not one code. Ford explained this to me as a "feature" so as to not alarm owners of issues. BWAHAHAHA.....I've since turned said video over to my lawyer and the NTHSA.
Never mind that they crippled the ECU on our trucks. I've already posted a vid of it, but here's an experiment any one of you can do. Go out to your truck, open hood, remove plastic engine cover and unplug 1, or 2, or 3 coil wires. Now, start your truck. Yeah, it's going to run like tihs, because, well, it running on less cylinders. NOW, go take it for a drive. When you get back tell me, did your truck throw any codes? It should have. The CEL should have been lit up like a christmas tree for misfire and coil continuity. Alas, mine throws not one code. Ford explained this to me as a "feature" so as to not alarm owners of issues. BWAHAHAHA.....I've since turned said video over to my lawyer and the NTHSA.
I unplugged MAF sensor on 08 GMC and it would not throw a code until the next "drive cycle", had to turn truck off and restart.
But still, you'd think with that bad of a misfire it would immediately throw a code. Just curious if it would throw a code on the next drive cycle.
#2570
Haulin Bass!
Unplug the coil wires and drive it. Then shut it off, start it and drive it again. Still no codes come up?
I unplugged MAF sensor on 08 GMC and it would not throw a code until the next "drive cycle", had to turn truck off and restart.
But still, you'd think with that bad of a misfire it would immediately throw a code. Just curious if it would throw a code on the next drive cycle.
I unplugged MAF sensor on 08 GMC and it would not throw a code until the next "drive cycle", had to turn truck off and restart.
But still, you'd think with that bad of a misfire it would immediately throw a code. Just curious if it would throw a code on the next drive cycle.
But, hey, what do I know.