My F150 has 100,000 miles on it and hesitates and bucks on acceleration. Auto zone pulled a code which I can't remember what it was but did say it was the throttle body actuator was stuck open. I pulled the throttle body and cleaned it with throttle body cleaner put it back on. No change.
View 5 RepliesI have a F150 which has developed a miss or hesitation when driving. I took it into my mechanic and he told me this:
This year truck is famous for needing a tune up but the problem is that ford redesigned the spark plugs for these years of trucks. The problem is hat carbon builds up and when u go to remove them the plugs break and sometimes you have to take the heads off to get them out, he said that this would cost around I 2500 is one breaks!
So my question then becomes is this the norm for my V8 2005 Ford F150?
My truck has 85,556 miles on it.
2005 2.OT ... Our car showed an engine light last night and when doing heavy acceleration, starts to pull or hesitate. Do not occurs when accelerating slowly, all day at dealer and they said that might be cam wear or some pressure pump. They are taking the engine covers to find out what is the issue. Cam repair and oil change. It drives smoother and no longer hard down shifting....
View 9 RepliesMy 2012 ISF has this weird hesitation going on. On manual mode with Sport, I would try to accelerate pretty hard and around 5k RPM, it would bog down and hesitate. Almost feeling like it's choking.
View 14 RepliesI have a 2005 F150 XLT with a 5.4 (198,000miles) RWD. A few months back it developed a miss due to bad COP's, typical shuddering around 50-60 MPH.
I pulled off the COPs and while I was in there I pulled my old plugs as well. New Motorcraft SP515 plugs went in with a little nickle anti-seize being careful not to get any near the end of the plug and I put a set of Granatelli COPs on with a little di-electric grease on the inside of the boot. The miss went away and the truck drove like a champ.
I will also note that I replaced the front wheel hub/rotors, front calipers and new pads. I resurfaced the rear rotors, new pads and new E-brake shoes also.
The issue I am having is under light acceleration, or "normal" driving conditions the vehicle has a mild shake which eventually smooths out.
My first assumption was that I did not torque my front wheel hubs correctly or that I messed something up so I took the truck to my local front end/alignment shop for a full inspection and they said everything is great. They also said that they didn't really feel the vibrations that I mentioned. I am used to this truck driving very smooth up until the misfire situation so to me it is quit noticeable. After the front end shop I went to Discount tire cause they mentioned that my rear wheels are bouncing pretty good and that may be what I am noticing. Turns out the tires were out of balance which Discount took care of and rotated my tires while I was there.
The vibration is STILL THERE! No CELs to reference, just an obnoxious vibration. I tried to isolate the issue by accelerating in 1,2, and in D. The issue occurs regardless of the gear I start off in.
Just bought a 2005 4.6Lused. There is a "air escaping" kind of noise during acceleration. It sounds just like the AC system does sometimes after you turn off an engine. I thought originally that it by be AC related, but doesn't appear to be. At steady speed, it goes away, but comes on again with the slightest bit more gas pedal. In cruise control, it cycles on and off when the cruise accelerates up a hill,, etc. The sound is on the driver's side apparently close to dash corner.
View 9 RepliesI have a 2005 FX4 with a 5.4L. I have noticed in the past 3 months that when I mash the go pedal hard the engine misses and there is a popping sound. My gas mileage has gone down 2-3 MPG.
View 10 RepliesI have a new to me 2005 F150 with 86,000 miles. When I am driving through town at a low acceleration or a constant speed at between 40 - 50 mph the truck starts to sputter and kick a bit. When I give it some gas the problem goes away. This gets worse when I pull my bass boat, and starts at around 30 mph. When I hook it up to a reader I get a P0316 code. Only code I get.
Also when I am driving through my neighborhood between 20 - 30 mph I get a noise that sounds like there is a plastic bag stuck under the truck. I have checked under the truck to see if the firewall is loose anywhere, but could not find anything. Other than those two issues the truck runs great. What these problems could be?
I'm having issues with my 2004 Toyota Corolla with 118K. Every few weeks, the car will go through a phase where it will stall out, run rough and hesitate on acceleration. Oftentimes it is accompanied with the rotten egg smell coming from the catalytic converter. When I decelerate to a stop light, the car will stall. When I start it back up, I have to rev the engine to 2000 rpm in neutral to keep it from re-stalling. Once I get up to about 10-15 mph, the car will jerk and sputter, and at 40mph, the jerking motion gets worse. If the car doesn't stall it'll run rough and have the rotten egg smell. I'm assuming the smell is from unburnt gas.
I find it happens more often when I don't let the car warm up for a few minutes. I've taken it to my mechanic, and i've gone through 2 MAF sensors, cleaned the throttle body. I changed the iridium plugs at 102K and am on top of maintenance with filters, oil and such. Of course when I bring it to the mechanic, the problems don't show up, and we are kinda blind to what could be causing the issue. Also, if I park it for a day or two after the issue occurs, the problems go away. What to look for?
I am having a minor problem with my 05 F150 Lariat. Under light acceleration going up a slight grade the truck sometimes shudders (vibrates?). If I let off the gas or accelerate slightly it stops. At first I thought it was a feedback loop with the electronic throttle so I had the dealer reflash the computer but that didn't fix it. I've noticed that it happens right about the time the torque converter locks (looking at the tach) and I'm sure it has something to do with torque converter locking up and then disengaging continuously. Funny thing, it seems to happen frequently on the same hill at the same speed. What was done to fix it?
View 14 RepliesI've began noticing about 2 - 3 months ago that while coasting up to 50-55 mph my truck begins to hesitate with a slight banging when it occurs. At first I was worried it may have been transmission, but once I talked to ford mechanics, they reassured me it was not, especially at 85,000 miles. I then noticed that taking it out of overdrive prevents the problem. It doesn't act up unless I am on the highway between 50 and 60 mph. It seems to progressively get a little worse and occasionally I can feel a jolt, as if it's struggling to shift into OD. What the problem could be? 2006 F-150 FX4 ...
View 4 RepliesMy 04' FX4 rear door locks hesitate to open with the key fob or the door switch. I can get them to open sometimes but not every time. Why this is happening?
View 6 RepliesRecently the fuse for the ECU was pulled. From what I have read it reset the computer. Since this happened the car will buck or hesitate during acceleration. What is a good starting point to resolving this issue.
View 9 RepliesI have had my 2010 Prius 2010 for a year now. I have been taking my Prius to a full service car wash with the conveyor belt. They have always seemed ver Prius savvy. But the last couple of times, after getting in the car and driving away, the car seemed to hesitate upon initial acceleration. Then the problem goes away.
The last time I took it to this car wash, I sat in the car, because I only needed the express exterior wash. About a third of the way through, the instrument panel said "Low Traction Battery... put into Park" I did not obey the warning because I was afraid of putting it in Park while the conveyor belt system was pushing my Prius along. So I ignored it. By the end of the car wash, the engine had shut down. I had to start it up and drive out, and I got that same momentary, initial hesitation as I accelerated, like before. The hesitation went away after that.
1999 buick century custom .. 3100 motor .. 200k+ miles ..
It all Started 2months ago.. once every few weeks my car would hesitate during acceleration (leaving a light for example) but just once.Then started it up one day and it was idling rough..also stalled out twice.
Dropped it off at a shop after hours so he could check it out in the A.M.he calls n says its not acting up at all.
Get the car back and drive it 2 more weeks..then it happens again. Rough idle and hesitating...take it directly to the shop but its acting normal again by the time I get there (starting to feel like im crazy)
So I take things into my own hands... I change air filter, clean MAF and throttle body. Change the plugs and wires.
start it up and it seemed to run better than it ever has.. for about 5mins.I took it for a test drive and it started sputtering and bucking and eventually died to the point of undrivable.
Got towed home.NOW it starts dang near everytime but runs EXTREMELY rough for a few seconds before eventually dying. It will run a bit longer if I unplug the MAF (45seconds maybe) but runs like fecal matter the whole time
I have swapped out the MAF, EGR valve and IAC valve with parts from a 97 century (which runs fine)And nothing seemed to change the condition.
Changed fuel filterchecked fuel pressure with key on (41psi)Also replaced the timing chain and gears (thinking it slipped) but it didnt make a difference.
I pulled codes but all it had was a P0102 (MAF low input)But I think that might be from it being unplugged so many times?
I just purchased a 2001 Dodge Durango 4wd with 140,xxx miles on it. My issue is that whenever I accelerate it hesistates and if I am going at a high speed like on the interstate or expressway it sometimes slows down (drastically) if I'm going uphill. What can be causing this?
View 6 RepliesI have a shudder that happens when turning right at a grade of about 10% while accelerating, and only on that condition. While making a routine drive somewhere, there's a turn with that one condition. Every time it shudders. It doesn't bother me because it happens so rarely...
View 6 RepliesI noticed the problem today when I was driving to the store. I was going around 60 and went to pass a car. As soon as I hit the gas there is a popping noise coming from the engine compartment and it had no power. It only does it between 50-65 mph.
View 1 Replies04 F150 4.6 ltr Has a tinny rattle during acceleration . Sounds like 2 hammerheads in a washing machine....
View 2 Replies2007 F150 King Ranche 4wd 5.4 192000 miles.
I started noticing a little stutter when trying to hold 45 mph if I hit a mild incline, and also at 70 or so if i hit an incline.
Around the same time, I noticed that acceleration seemed sluggish when getting on the interstate. Gas mileage dropped from 16-17 mpg combined to 12-13 mpg combined.
Historically, since I bought the truck 3 years ago, if I go WOT to get up to highway speed (Not my normal mode of driving, more of a test) I would get a misfire on cylinder 8.
About 2 weeks ago, driving around town, I got a check engine light. The code said it was rich on bank 2. Cleared the code, it has not come back.
Here is what I have done:
Flushed the tranny (Vehicle history shows this has been done consistently since original purchase)
Changed all 8 plugs (none broke!) and all 8 COPs. - Fixed the misfire on cylinder 8.
Still sluggish and still have the stutter at 45 and 70 on an incline. I know it's not a racecar, but 0-60 in 19.6 seconds seems quite unreasonable.
New Fuel Filter
New Air filter
Cleaned MAF sensor
Had the back pressure on exhaust checked. No blockage there.
My torque app tells me the TPS is functioning normally.
No codes are being thrown, no CEL at this time.
What am I missing? I have a reader that will chart up to 8 sensors as I drive.
So, my 2004 with its constant tick is now "Missing", but only under moderate acceleration, between 1k and 2k rpms. i.e., : When in OD and wanting to gain a few MPH, but not drop down a gear. I have noticed it in OD and in 3rd. Feels like the engine stops for a split second, several times.
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