Ford F-150 (2009-2014) :: 2012 - Missing / Shuddering On The Highway Between 1200 - 1700 RPMs During Slow Acceleration
Dec 31, 2014
I have a 2012 4x4 EB CC. In 6th gear, on the highway between 1200-1700 RPM's, during a slow acceleration, it feels like it is missing or shuddering. It is most pronounced going up a hill, and/or towing something. As soon as you get above about 1700, it goes away. Rig needs to be fully warmed up (not just the engine, but tranny/drivetrain). Needless to say, this is generally from about 52-65 mph, which is most highway (not freeway) driving I do. At times it's so bad my wife says it's time to get a Chebby.
Had it in about a year ago, couldn't duplicate it. Took it in this last week. Did the TSB on the plugs, and was told that would fix it. It didn't. Took it back in; they couldn't duplicate the issue. Rotated the tires hoping that might do something. Took the head service guy for a ride, and made it happen; it was very obvious then. It seems like the tachometer should bounce or shudder a bit when it's doing it, but nothing. It's going back in on Monday to see what they can do.
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I have 2005 f250 5.4l 3v that was having miss problems between 1200 and 2000 RPMs. Changed VCT solenoids which worked, but then could hear chain hitting cover when powering down throttle on left side. Figured chain tensioner was bad, so tore down and removed timing cover. Found left chain was tighter than what seems normal, and right side had huge amount of slack. While taking off tensioner on left side, something happened to fast for me to see it, and still not sure if what happened wasn't just my imagination. I thought that the chain moved very fast for an inch or two. Anyways, I watched how to video on timing the 3v, but I am very confused about it. The left bank seems to line up on timing marks perfectly, but the right chain is off by at least 2 1/2 links. Not knowing any better, I removed three rockers on left bank (2 intakes and 1 exhaust) but only removed two intake rockers on right side. I don't know what I am doing and getting scared.
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I have recently purchased a 2011 F150 Ext cab with 3.5L ecoboost with 69k miles. I have no experience with these engines prior to now. I've always wanted a full size truck and after driving my 98 S10 for 17 years, I decided it was time for a new truck. I hope I made the right choice in going for the 3.5 instead of 5.0.
On to my question. I've noticed that the truck hesitates from a dead stop or anytime the RPM's are under 1k. It feels like its missing or running lean/rich during the spin up of RPM's. When I drive it hard, it does seem to subside for a little, and I've heard people say that they run better when run hard. I can attest to that, but is this hesitation normal for an almost 70k mile engine? I am getting 15ish MPG on almost all city driving since I have bought it, but I do expect that to change (job hunting and current commute is less than 2 miles each way).
The only time I get to open it up is when I go run errands out of the immediate local area or visiting friends and family. On one of those trips, before I noticed the hesitation, I attempted to accelerate from 60 to pass on the expressway and it bucked and resisted like a horse. It finally took off up to 80 and completed that journey with no issue but the check engine light came on for a bit. The check engine light went off when I shut it down and hasn't come back on since.
New ride: 2011 3.5L Ecoboost....
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I took my 2011 Lariat in for first service and reported that it sometimes tries to accelerate on its own during slowdown from high speed, eg when coming off a freeway ramp, rpms go up and vehicle wants to speed up rather than slow down. (sounds like something a Toyota would do!)
Dealer says its a known problem with 5.0L and performed a supposed fix per "TSB 11-8-9, 5.0L ENGINE BRAKING PERFORMANCE DURING LOW SPEED COAST DOWN," essentially a PCM reflash.
Happened once in a parking lot...thought the floormat was stuck on the accelerator but the pedal was clear.
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I have a new to me 2005 F150 SuperCab Lariat 4x4 with 155,000 miles on it. About a week ago I replaced the from passenger hub assembly and half shaft (torn boot). When doing that, I noticed that the IWE actuator was not working right (would not compress evenly). When taking that off, there was a bunch of rust that came out of the vacuum line ports. It started moving freely after cleaning all of that out that I could (I will be replacing it soon). I assembled everything back together and all seemed OK mechanically.
I also scanned the truck and saw the code for a bad IWE solenoid so that is being replaced tonight. I also have not checked the drivers side yet.
So...now that I have done all of that, the truck started occasionally bucking/shuddering when I slow down from highway speed to about 30mph and lightly accelerate again. It does not do it every time though. There is no grinding/whining noises either. Could this be caused by the IWE system somehow? Maybe slowing losing vacuum and having one engage and the other disengaged?
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2012 F-150 5.0 Rough Idle Upon Start up - YouTube
Whenever I first start my 2012 F-150 with the 5.0, it idles rough and if I step on the gas it acts like either an injector is cutting in and out or it's missing. It doesn't really seem like a miss though, more like an injector/fuel issue. What it could be. If I let it sit and idle it won't go away unless I step on the gas and get it > 2500rpm or so.
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I've had this 2012 for several months now but have never really romped on the throttle until yesterday's road trip (not a lead foot driver).
I was driving on the highway at about 55 when I needed to pass so I floored the throttle and - the truck bucked like a wild horse and the power dropped to a low acceleration. Once I backed off the throttle to about half-way the engine took off like "normal".
These symptoms were repeatable throughout my entire 500 mile trip. Is this a known issue with the EB?
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I have a 2010 Prius Pkg 5 with around 71xxx miles. I usually drive it like a regular car on eco mode and get around 38mpg average but recently I've changed my style of driving where I accelerate to the desired speed limit, let go of the gas, then reapply and keep the mpg meter in between the middle eco line and before the pwr band. I've been able to average 44mpg this way, which is great!
However, what I've begin to notice now is that say if I'm traveling at say around 45mph and let go of the gas and re-apply, the engine starts to shudder as if it's not getting enough gas. Why this is happening? I also need new tires (215/45/17) but that doesn't have anything to do with this. I've owned this car since 30xxx miles and haven't done anything other than put gas and change the oil at the dealerships. Could putting 87 octane gas with up to10% ethanol have any effect on this?
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Ever since my last oil change, I've been having this low whirring or moaning sound at slow speeds (below 30mph). Switching the dial from 2WD to AWD, the moaning noise increases as if it engaging AWD; then it decreases. When switching back to 2WD, the sound doesn't go away. Other times, I don't hear this moaning sound and I hear/feel a very slight clunk.
It's like my truck is always in AWD and won't disengage. When I took the truck to the dealer, the service manager was with me and heard this noise, but when the 4x4 tech drove it, of course it acted perfect. Apparently, they had engaged/disengaged the AWD/2WD so many times that the 2WD/4WD appeared to work. The guy said, oh what you're hearing is normal, lets get back to the shop. My mileage is also dropping - another indicator being in AWD.
The dash panel always shows the electronic shift as successful. I know it engages while I'm driving because I sometimes hear/feel a slight clunk and then the roaring as if I'm in 4WD.
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My 2012 3.5 ecoboost has a knock and power lag during acceleration. Dealer diagnosed as timing chain and cam shaft phasers. I asked if this was common and they said, "yes, it will happen to all of them at some point." Basically, he said if you baby the truck it will take longer, but still happen. Wasn't surprised I'm having it at 67k miles as he saw another recently at 70k. The power drop is dramatic, so I don't see any option, but to have the work done.
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I'm a new 2007 Prius owner, and I know that the Prius is no sports car, but this acceleration is very slow. When I'm speeding up to get on the highway, it really sounds like the gasoline engine is working hard to get up to that speed. I've had cars in the past where the emergency brake gets stuck, can that be a probable cause, or is this type of slow, strenuous acceleration normal for the little Prius?
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2011 eb just turned 36k. Today on breezeway it shuddered like it swallowed a bird, and check engine light flashed on. Went to see customer left and light was off. Back on breezeway and shuddered on entrance ramp so this time I stayed into it so either there's a light that will stay on or just launch it and this time the dealer will have something to fix that they can diagnose. Check engine light is on its fine as long as I stay out of the pedal. Still have 8 months left on power train warranty but what am I looking at for a diagnose, there is definitely a problem now. What the dealership should see?
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2011 XLT 5.0 Coyote. Truck has a performance problem - it's missing almost unnoticeable at idle, but it's obvious (if you care to notice) when you hold the throttle barely open. Idle seems smooth, but if I hold it at about 1500 rpms, it most clearly and definitely is missing.
However, since there are "no codes" and since mode shows "no misfires". This really manifests itself when I'm towing a 6k pound trailer and the truck can't pull it up a 2% grade unless I drop it into 3rd gear. Of course, if I drive it like a race car it's a beast. But I can't leave rubber at every red light, especially when towing.
Fuel trims look fine (ST bounces between -4 to +4, LT sits right at +0.5). Cleaned the TB. Cleaned the MAF. Brand new Motorcraft plugs gapped at .045. CHT sensors read 205 on one bank and 198 on the other. Coolant sensor seems find. Haven't done a voltage test, but TPS data in the OBD seems smooth.
How to test the coil packs (neither does Ford). They want me to replace all 8, but I'm not doing that unless I can see real evidence a coil pack is bad.
I'm no novice however I'm losing my mind that "everything is normal" yet the truck so clearly has a problem. This has been going on for months and I'm at my wits end.
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I have a 06 f350 with 5.4 140k miles. Recently it has been shaking bad on idle but only in gear and it's hard to start when cold. The exhaust is moist at all times and the fluids never leak. When you floor it it hesitates feels like it's overly rich but if you let off a little it stars to pull again. Also while cruising at 1500-1700 rpms in any gear it will surge and skip. Only time it will miss and the CEL comes on is over 4000 rpms for a random misfire. Just put new coils in new fuel pump and filter. There has always been a cat code but it never effected the drivability. Could it be injectors?
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I have a 2008 Mazda3. The car has a replaced engine with 24,000 miles on it. The engine was put in before I bought the car.The car and engine run like a top; except at certain RPMs and when in gear. When I have the car in any gear (auto), the engine makes a rougher noise at RPMs 1400-1700. As I apply more gas, the RPMs seem to get stuck at 1700, then it will break through and run smooth 2000+ RPMs. The engine sounds perfect at all RPMs except 1400-1700 when in gear. When I have it in park and rev the engine, the engine sounds perfect at all RPMs.
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I have a 2012 F-250 6.7L w/8K miles. I have been struggling with this issue for 6 mo. The engine feels like its missing at low RPM. I would equate it to the feeling of a bad coil pack in a gas engine. The boost indicator drops to 0 for a split second then recovers. The dealer says they can't find the issue but went ahead and replaced the turbo. After the turbo replacement It got worse. This is an intermittent problem with no codes.
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I have a 2010 ford f150 with a 4.6 engine. it has developed a loud noise like a diesel on steroids and also sounds like its going to fly apart and it also misses when it does this . now this is how I have narrowed it down to make it happen because it does not do it all the time. it mainly does it to and from longer trips like 45 minutes or more then coming into traffic to a crawl or idle it will start making the noise . also when I pull into my drive and go from drive to reverse and go to back up it will also make the noise. I have no lights on the dash or codes. could this be a coil pack ? I had a coil go a few years back but it acted up under load on a hill and just missed with no noise.
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My 2011 F150 5.0 was bought used a year ago, and ran like new. A few months ago, several things started acting up.
* clicking at idle. Just a tick-tick-tick-tick kinda like a diesel. I swear it just started, but the dealer tells me it's "normal".
* Oil - I'm "losing" about a half quart a month. No leaks. 1500 miles after a change, it's dingy. (not dirty just brown) Dealer tells me it's "normal" that these trucks consume a little oil and that it will get dirty.
All that I could ignore but this is what bothers me:
The truck seems to struggle, mildly, to maintain speed on hills. It'll drop to 1k rpms before downshifting. Just a pig. Of course if I stomp it to the floor I get a good response, but it is just sluggish and wimpy when driving "normally". Also, when maintaining speed, there's a barely noticeable missing/slipping happening. When I pull a couple thousand pounds it really struggles.
This is happening. Three dealers tell me there's nothing wrong with the truck. After pressing the first dealer they admitted they never drove the truck. The second dealer called me to pick it up because nothing was wrong and also admitted to not having driven it. After I demanded they drive it, they called back still saying nothing is wrong. "The computer would show it if there was a problem." The third dealer has it now, drove it this morning, guess what? "There's nothing wrong, maybe you can come and show us."
I cannot believe the industry has lost the ability to diagnose vehicles beyond what a computer tells them. Do techs not check compression or ignition or fuel pressure any more? Seems to me a valve issue for example could be the cause of all my symptoms, or fuel delivery, or weak spark, none of which would show up on the freaking computer.
Coyote 5.0 engine and the 6R80 trans.
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The truck always ran perfect till two days ago. went to start it in the middle of the day , it would barely start, when it did it was missing bad. then seemed to clear up a little after about 30 seconds but still missing. they thought they got some bad fuel. so they dropped the tank cleaned it all out and got new fuel, no change.
Him and a so called mechanic "kid from fire stone" played around switching coil packs around from the injectors with no change. He tells me that the two front cylinders , one on each side are not firing. that those two spark plugs are coming out fuel soaked after running the truck. He thinks it dropped a lifter or push rod popped out of place.
I took my A/E over and came up with codes p0106 - map sensor, and p0135 - 02 sensor. i cleared them and started the truck, shut it back off ran codes again. He also said they pulled the 02 sensor and it still ran the same.
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I recently picked up a 2012 Passat. I love it. Comfortable ride compared to my Volvo, looks amazing from the outside and, well, its a VW - always loved them.
So, my only question is about the acceleration. It tends to be a bit slow on takeoff. Its hard to explain, really, but it creeps a bit and then I find that I need to push relatively hard to get the RPMs up to get the car to accelerate. Ive never had this type of issue in a car before so I thought I would ask to see if this is normal. At first I thought it was maybe a gas saving feature. When I use Sport Mode or Sports Shift it accelerates fine with no issue.
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I'm talking basically about the equivalent of your standard pulse and glide in the regular Prius. But the PiP would allow you to do it up to 62 mph. However, you would manually have to toggle the HV/EV button to do it. It would be tiresome.
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