Ford F-150 (2009-2014) :: Erratic Throttle / Surging When Moving From A Dead Stop Through Low Speeds
Aug 20, 2014
I have a 2009 F150 4x4, XLT crew 6.5' bed, 5.4 engine. The truck has a very strange erratic throttle behavior from a dead stop through low speeds, shifting seems very strange at low speeds too.
Dealer tried re-flashing the computer, but that didn't fix it. They talk about some valve that sounds to me like it's similar to an EGR function, but I cant remember what he called this valve. He explained the issue as exhaust gasses that are to be recirculated and burned, but the valve is opening at the wrong time, or stuck open or something so it feeds the fire so to speak.
Does any of this sound typical or common? Is this something that's hopefully easier to do than a spark plug change on a 5.4?
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I've had my truck start making a nice CLUNK from the vicinity of the rear axle when starting moving from a standstill. (and it's a pretty decent thunk sometimes, you hear it AND feel it). I called and made an appt to bring it in and have it checked out (also having the first oil change done and gonna see if they can figure out why the automatic headlights are almost always on even on a bright sunny day) ...
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2010 F150 XLT FX4 5.4L Crew Cab Medium box, nice blue truck, lacking on chrome though.
My friend has a clunk/lag on take off from a dead stop only. Drives fine down the road, but when taking off from a complete stop, you step on the gas, and nothing happens for a second, feels like it lags, then clunks, gives a jerk, and takes off.
From talking to other newer Ford owners, seems like a common problem.
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I was just curious what the best way to increase initial acceleration from a dead stop is for a 2009 F- 150 XLT with a 5.4 V-8.
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Intermittent chirping noise when accelerating from a stop. It sounds like a brake chirp but it comes and goes. Not brakes. Changed pads and turned rotors chirp is still there.
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i am wondering if any other touareg v-10 owners have experienced what i call "slop in the drivetrain"?symptoms: when just crawling off from a dead stop and then letting off of the pedal i can both hear and feel a little clunk whether forward or reverse. its real subtle but its always there if you listen for it. Is this just what they call normal "slash" of the worm gears in the differentials? i would hate to find out later once warranty's gone that i should have done something about it earlier? i have 19,000 miles on it, 70%highway and 30% city driving.
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I have a 1987 ford f150 with a EFI throttle bodied 5.0L (302), and I have taken it to a mechanic multiple times because for one it has a dead spot in the throttle and it dies when you let off the gas at a stop light or sign. But the mechanic said he checked everything he knew to check and found nothing wrong with it. I also had my cousin read the computer previous to this and we couldn't pull the codes from it.
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I just have a 1999 ES300 that is having a strange issue. I realize this is a toyota forum, but the engines should all be the same.
When you accelerate from a stop at full throttle, the car feels very sluggish moving up the RPM range, and acts as though it is missing and stumbling the entire way up. If you do the same acceleration at lets say 70-80% throttle its much faster and much smoother (like the car is supposed to be). Works just fine until the car hits like 55mph, then power just cuts out.
If I'm revving the car in park or neutral its the same story. Works well at part throttle, but full throttle it misses as its revving up. To me this seems like 100% some kind of weird electrical issue. I'm having a tough time tracking it down though.
Things I have done:
1. At one point i had an VVTi OCV code for the rear bank, so I've replaced both OCV filters, and removed tested and replaced the RH OCV valve (they were both working to spec, but the rear one had a little more play in it).
2. No codes by OBDii scanning.
3. Cleaned MAF
4. Checked intake hoses for rips (there are none)
5. TPS seems to be working well based on OBDii diagnostics.
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So among the other annoyances my 92 Ranger 4.0 auto has it has a hesitation before it starts spinning the tires under full throttle from a dead stop. It's the 4.0 automatic. I thought it would have more power than it actually does being use to a 2.5 auto. But this 92 4.0 runs and drives good. I've gotten it tuned up with new motorcraft wires, plugs, new coil, fuel filter, fuel pump assembly, fuel pressure regulator, air filter, idle air valve, new O2 sensor, new Dynomax muffler. I can't find any vacuum leaks. The engine idles slightly rough after you start it up from it sitting for a few hours, but quickly smooths out as soon as you start driving it.
This one here has no EGR. Transmission feels good, may have even been replaced by previous owner before we got it. It shifts good and the fluid is clean and the transmission is the cleanest part under the whole truck. No way of knowing for sure. The truck currently has 111,000 miles and I did all that stuff when we got it at 101,000 miles. So what could it be? I'm thinking a lazy injector or could it be the catalytic converter? Or could it be the throttle body? I know I once had a BBK throttle body on it and it made the world of difference in off the line power but it kept throwing too rich/lean condition and a TPS code so I had to return it. It sucks because it did wake up the motor. I returned it and since then the Check Engine Light hasn't come back on.
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Occasionally, under the right conditions, my turbo seems to surge...meaning I can hear, and feel the turbo kick in and out...kinda like it is right on the threshhold of not knowing if it needs to kick in out not. This usually only happens when I'm cruising along and just slightly give it a little more gas. Otherwise it seems fine...plenty of power etc. What could be going on here...just the nature of the beast??
My truck is a 2011 F150 Eco Screw 4by....
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Having throttle hesitation problems. This is the 3rd time I have had it in for this problem and they can't figure out what is wrong. The vehicle moves slightly forward from a stop and then goes dead for a few seconds then seems to recover and go.
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So, I was just driving home from work in my 2005 Prius (~78k miles) when the engine started surging erratically and uncontrollably. I don't know if this is the cause, but I hit a bump right as I was hitting the gas and so I wasn't surprised when it revved up at first. But, then I backed off and it kept revving. Then I took my foot off the gas and it was still revving and accelerating so I had to start braking to keep going the same speed.
It kept erratically surging and then letting off as I basically kept braking at different levels to maintain speed or slow down when I could as we were coming to an intersection. The light turned red and I managed to get to a stop even though it was still revving, so I hit the P button and the engine calmed down. So, when traffic started again I slowly put it back in D and it surged again. We didn't move much before we had to stop again so I put it in P again. I noticed the battery icon was down to a few pink bars so I turned off the radio and air. Traffic started again and I put it in D and this time it seemed ok. I detected a faint smell that I think was probably from the brakes/tires being overheated, but it could've been something else maybe. It drove normally the rest of the way home.
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I have a 2014 F250 with the 3.55 rear end and 6500 miles and since new it has a hesitation from a dead stop that I cannot determine if it is normal or not. I took it into a dealer that specializes in diesels and they drove it and told me it is normal. Every time I see someone with the 6.7 I ask them if they have the same problem and I get all kinds of explanations from turbo lag to protecting the tranny. The hesitation I feel is when I throttle from a dead stop. It is a very slight hesitation, but very noticeable, almost like a little "dead spot." If I take my foot off the brake and let it take off on its own for just a second or two and then throttle smoothly it is not there at all. If this is not normal, I want to do everything I can to get it fixed. It is driving me nuts.
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So of course the dealership isn't going to diagnose this since "the car's not supposed to be driven that way" - but I get a nasty rumbling noise when I accelerate from a dead stop with wide open throttle. It only lasts for the first few thousand RPMs in first gear, and after that it is gone.
I was guessing that it might be the transfer case or something like that, but it's really hard to tell. I do have AWD. I did not have any such problem in my previous GS, which was a 2007 (current is a 2010). It's worse when I accelerate around a corner, and it also makes a small noise when I'm going above 80ish mph, which of course the dealership isn't going to diagnose either.
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2010 F150 for the past 15,000 miles I have been experiencing a nasty repetitive surge when moving slowly forward with the brakes on, as you would do going through a drive through. The truck shakes when this happens and is very noticeable. Ford reprogrammed the transmission module, and now the surge happens twice as fast. What was the remedy? This is my first Ford after only GM products for the past 30 years.......and I hope they can find a resolution soon.
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Title says it all come to a stop, step on throttle nothing, let off and step on it again it goes, does some one have to be killed before Ford knows there's a problem, it's happened to me 3 or 4 times in the last month, dealer checked said there's no codes so nothing wrong. OK I forgot the good info 2014 eco screw 4X4.
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2013, 6000 miles, parked in garage Fri night and Sat morning would not start, no lights no electrical at all. Charged all day Sat and today still would not start or any signs of starting. Battery clean and tight.
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I can only get the left front speaker in my 2010 F150 Lariat to work. I've played with the L/R balance and B/F fade.
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I have 2011 f150 5.0 with 38,000 miles and the throttle body seized up tight.
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I recently purchased a '13 FX4, i love the truck, the Ecoboost power is incrediable. Recently while passing someone it made a horrible grinding sound, the dealer advised that it was known turbo issue that should have been corrected before we took delivery of the truck. When we took it in the dealer called and said they have Ford corporate involed because when the truck reaches WFO the four wheel drive tries to engage. Said it might be soem sort of vacuum issue.
Specs : 2013 Ecoboost Screw FX4 short bed. No mods, 6500 miles.
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Resetting Throttle Response. I came across this video, bored and just playing around, and tried it on my 2013.......and it works! Turn the ignition key to the run position, then slowly press the accelerator pedal to the floor. Then let the pedal up fast, then turn the ignition off. Do this 3 times, and on the last time, also turn the ignition off. I was amazed that that the lagging pedal response was almost completely gone!
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