Ford F-150 (2004-2008) :: 2007 - Hesitation And No Power At Acceleration
Nov 30, 2014
What a year 2014 has been. I had a 2005 F250 6.0 that was stolen in March and totaled when found days later. My insurance gave me enough to pay off the loan and render me the obstacle of replacing it. I got my F250 pretty cheap so replacing it for the insurance pay out was non-existence. I ended buying a 2007 F150 EC 4X4 w/ the 5.4 and having 97,000 miles on it. Just as luck would have it, I had the F150 for about a week before the cam phasers went out. Luckily the warranty covered it enough to put in a new LKQ reman engine.
I got the truck back about 2 weeks ago and put 1,000 miles on it in a very gracious form. I have noticed since then that despite letting it warm up for 20 minutes, I could put the throttle on the floor and the outcome was very poor. It was almost as if I was attempting to pull a house down. I couldn't even get the tires to spin at all, not even on wet pavement. Now I know this is not my old F250 6.0 turbo diesel, but really, I expected more from a new reman engine! They used all components from the old engine except for new spark plugs and a fluid change. Why is this "new" reman engine so weak?
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Here's the story on my truck. Spits and sputters between 40-60 during heavy acceleration and on rare occasions will jerk/pop while at a steady speed. No engine or wrench lights. I thought it might be the fuel filter and changed that, it didn't work. I also ran two bottles (on 2 separate occasions) of Duralube extreme fuel system cleaner, that didn't work either. So, I took it to the Ford dealer for a diagnostic. They had a hard time getting it to act up but said it finally misfired on #8 and recommended replacing the ignition coil and plug. I did that, still have the same symptoms. So, I thought it might be the fuel injector and changed that. Still same symptoms and ZERO dummy lights.
After several YouTube videos, I thought it might be the TPS and got one. Before I changed that however, I cleaned the Mass Air Flow sensor, still same symptoms. I finally changed the TPS, but the engine wouldn't start or run at all, no warning lights yet. When I put the old TPS on, it would run. I unplugged the TPS and it still ran but very rough. Now the engine light IS on! Thinking I purchased a bad part, I took it back to O'Reilly's and they warrantied it out and gave me a new one. I had 19 PO codes. I changed the TPS again, and, it won't start or run at all. Put the old one on and it runs. They cleared the codes and told me they think it could be the ECM/PCM.
Why will a new TPS not work? I still have the same issue of hesitation @ 40-60 during hard acceleration. No hesitation during a moderate acceleration.
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I posted a while back about my 04 5.4 having an issue at idle. I did all the normal things like replace coil, spark plug, etc etc. No change to the issue. It still acts as though it's misfiring on a cylinder and I get codes P0306 and P0316. Finally took it to ford and had a diagnostic check ran. Everything on the top end was in working order. The tech even put a known working coil on 6 and nothing changed. I was told that it's either an intake or valve issue on that cylinder. But no definite answer to problem.
Fast forward to yesterday. I got a wild hair at lunch and went out and started truck. Pulled injector plug off of 6. No change to the way it was running. I did the same for 5, 7, 8, 1, and 2. All of which made a big difference in the way it ran. It was obviously misfiring with no fuel to cylinder. This gave me the idea to swap 5 and 6 when I got home to see if the issue followed the injector from 6. I did NOT. I pulled the plug on 5 and got the obvious change in the way it ran. So there is definitely something going on at cylinder 6 that I cannot figure out.
PCM, bad intake, bad valve? I'm not rich so a trip to ford for repair is gonna have to wait. Truck seems to run fine when driving except for slight hesitation during acceleration.
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Had this truck a few years now, and it has always had a slight miss/hesitation and maybe a few codes. The timing chain skipped a tooth and the truck was down for about a year. I have 4 other trucks, so it wasn't a big deal. I finally had time to put a new oil pump, chains, guides, tensioners, phasers etc. The truck actually runs very well and quiet. But, now misses far more than I remember it doing.
When driving in town constant at 25-30 mph occasionally it will loose power for a brief moment(<1 second) and then be fine, the security light on the dash turns on for a few seconds. It drives at 55-65 just fine, unless I am going up a hill or something else increasing the load.
2004 5.4 3v 2wd
CEL-
P0453 (fuel tank pressure issue)
P0351 (ignition coil a primary/secondary circuit malfunction)
P0356 (ignition coil f primary/secondary circuit malfunction)
The coil packs are new, and I have injectors on order. Also found this thing on the back of the motor, it connects to the fuel rail on the drivers side. Where it should go. I looked on my other trucks. But my other 04-4wd has a box by the battery it connects to, but mine doesn't have any of that stuff. And my 08 doesn't have anything like this at all.
And a pix of the truck in question.
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08 f150 with 5.4 with 109k on it. Truck has cel with p2006. No power. Very little acceleration. Only fault is p2006. Removed the intake and checked for clips on the linkages. All are present and attached. I replaced the actuator and followed instructions thoroughly. Installed intake and took it for a drive. Same issue. Removed intake and plugged old actuator in and turned on the key. Verified that the it was moving with key on.
Repositioned the wiring harness and knock sensor connectors and reinstalled intake. Took it for a drive and code keeps coming back with no power or acceleration. Tried new MAF and still same issue. No wires are chaffed. Nothing is binding the links. Both intake flaps move freely. What else can cause this code? I have a snap on solus ultra with latest software update. Where should i start...
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My truck is developing a hesitation or a miss when accelerating. It only does it in the beginning of accelerating like when just starting off from a stop. Seems like its more noticeable with the more I get on it. If that makes any sense. When just lightly accelerating it doesn't do it, like going slow through town from light to light. But when I give it more is when I feel it. It seems like it only does it before the turbo kicks in and it puts out a little smoke too only before turbo kick in. After that it runs good with no noticeable miss or anything. WOT runs feel good after it clears up. Its just when first starting out with anymore that 1/4 throttle I can feel it.
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My 07 F150 has no power. I changed the timing chain, cam phasers, spark plugs and all 8 coils and still no power. Rough idle and bogs on acceleration.
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It was the fuel. I had been experiencing a hesitation when going from a cruising speed...to WOT (wide open throttle) situations. The car would kind of just hang there for a couple of seconds, not really going anywhere. This situation was a bit - I wouldn't call it scary - but I would call it something I needed to be concerned/mindful of when pulling into traffic or switching lanes on a highway, etc....it made you have to take into account how much more space you'd need to do such a maneuver.
Well the problem is gone, it was the fuel. And it was my own fault. I was buying Super one week, then supplementing mid grade the next...mixing the two and lowering the octane level. Plus I was buying the gas at a station that was cheap. My logic was that I drive 600 miles a week...I'm trying to save a few bucks, etc...the guy I bought the car off of said he was doing the same thing with the fuel (and he's a Lexus tech)...and for the most part I didn't notice much of anything in loss of fuel mileage, etc.
The hesitation wasn't something that really bothered me because I usually don't find myself in situations where I have to mash the gas pedal into the floor, but I did want to know why the car was acting like that. After reading through a bunch of threads I came upon one post that said most of the time it's the fuel, but there is a reprogramming procedure as well. For me it was the fuel. I know others have solved an entirely different problem with the quality of their oil (TGMO).
So if you're going with a lesser grade of fuel...yes your miles per gallon won't really change...and no you won't be able to tell much of a difference...but don't be surprised if your car doesn't want to move in hard acceleration situations for a spell (I imagine it's the knock sensors kicking in).
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I bought a used 2008 Sonata GLS with 65K miles 2 years ago. It's been a great car so far. For the first 25K miles that I drove it, it had good pickup and got ~30 MPG for my highway driving. In the last ~5K miles, the fuel mileage has dropped to 25MPG highway and it has some hesitation when accelerating, especially on lower RPM's. I changed the spark plugs with NGK Iridium, but it is still having the issue. What to check?
Some possibilities: ignition coils, sensors, timing belt, etc?
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My 2001 VW Passat 1.8T manual transmission is experiencing loss of power/hesitation during acceleration. Occasionally the check engine light will blink for about 10 seconds during this time. My valve cover gasket blew about 7 months ago. I had it replaced along with 2 ignition coils. Since then I have had replaced the other 2 coils and spark plugs because of this recurring problem. I have also replace the mass airflow sensor for the second time. The diagnostic check continually shows misfires in different cylinders for which I again tried replacing the coils. I have also received the codes for "fuel mixture too lean" as well as for too rich. What could be causing this?
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My truck is just turning over 100k miles and I still love her like she was new. Recently I've noticed accelerator hesitation (especially in slow traffic) that wasn't there before. Also something new, the fuel system no longer bleeds pressure when I remove the cap to gas up. I think the lack of fuel system pressure has something to do with the hesitation. I did the easy thing and replaced the gas cap. I asked the dealer and they checked fuel pump(s) output pressure and said they were normal.
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I have Hesitation problem with my expedition 2004 during mooring time some time when car in cooling condition but now days must of the time I have this problem I want to many work shop and the tested my car by computer but they cant find clear fault the told they need to check many thing.
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tried to look into the wiring below the fuse box. The fuse tested perfect.
I've gone as far as to -removed- the fuse box to inspect wires wrapped together behind it, and nothing.
Most threads talk about orange wires with a green stripe meeting in a corroded splice. I can only find one orange wire with a green stripe, no splice found on it yet. Other splices (like on white wires with blue stripe)look very good, no trace of corrosion at all!
I know fuse #3 powers the mirrors, but it is impossible to visually trace which wires it is connected to, even with the fuse box in my hands... I guess tomorrow I will probe all the contacts for connection to fuse #3...?
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When I am driving and i go to stomp on the gas my truck feels like there is no power and makes this funny clicking noise and goes no where.
NOTE : Literally just replaced plugs and coils with success. 105k miles, Oil change 2 weeks ago
2007 F150 lariat super crew 4x4, 5.4 v8 w/ 3 valve
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I just got the spark plugs changed in my Ford F-150 the other day for a misfire problem. Misfire is gone now. But, as I was testing the truck to see how it performed after the spark plug change, I noticed that as it was raising speed with my foot to the mat, the engine felt as if I was slightly letting off the accelerator and then slowly pushing the pedal back to the floor. It loses power as if you're getting ready to slow down for something and then slowly the power comes back and it does it off and on throughout a WOT run from lets say 40-75 MPH.
2007 Ford F-150 SuperCab, Lariat, 4X2, 5.4L 3V.
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Quick truck stats: 2005 F150, 5.4L, 85,000 miles
The past few weeks my engine has been hesitating on some cranks before it would start. I figured it was due to the cold weather so didn't pay too much attention to it as it was also not throwing the check engine light.
Yesterday it didn't start at all after the several attempts of just cranking over and over. It still didn't seem to trip the check engine light but I pulled my scanner out anyways and it had the code p1237. I cleared it and the truck started right up. It even had no more issues the three times I started the truck after that.
Today, however, she is not starting again and not throwing any codes. Still cranking so I'm sure it's not the started or the battery. I'm going to have my husband pick up some starter fluid on his way home today to see if I can at least get a temporary start since I think it's the fuel pump, or possibly the fuel filter. It is cold again this morning so I'm wondering if the cold is somehow making this issue worse. Either way I'd like to fix it, since being stranded with a truck that doesn't start is not my idea of a way to pass the time.
What else it might be and how I might be able to diagnose it?
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This morning as I was driving to work, my truck hesitated as I tried to accelerate from a stop sign. I pressed the pedal and nothing, almost felt like it was going to stall. After about 3 seconds it started driving again and I had no further issues. It seems to only do this in the morning when it is cold. It has done this a couple of times before, but usually it recovers almost immediately. I had no CEL come on. 2007 F150.....
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How's it going? I have a 2005 F150 with the 5.4L V8. It has 70,000 miles on it and until yesterday and has been a great truck. While driving in traffic yesterday the truck started running rough and hesitating. It through two codes - misfire cylinder 5 and misfire cylinder 6.
In response, I purchased two new coils and 8 new autolite plugs. The plug installation went smoothly and the coils all went on without incident. However, this didn't fix the problem!
The next day I found that cylinders 5, 6, 7, and 8 were all having issues. At this point I also had an "O2 stuck lean" code so I pulled the plugs and found all four brand new plugs fouled and smelling like gas and an ehaust that smelled like raw fuel. This led me to replace the O2 sensor on the drivers side. With the new O2 my lean code disappeared but I still had a rough idle.
Further troubleshooting found that injector 6 was stuck open (which presumably fouled my O2 causing it to read lean and dump fuel thus fouling all the plugs on one side). I replaced the injector and the rough idle disappeared and all seemed really well as the truck idled in my driveway.
However, as soon as I hit the road I noticed a major hesitation. The motor is also noticeably louder and has a very hard time accelerating. I'm thinking that I've plugged up my cat by dumping so much fuel in to it and the hesitation is caused by a lack of breathing - does this sound possible? How would I confirm this without replacing the cat? Anything else I should look for? I'm fairly confident I have combustion in all 8 cylinders now so I'm leaning towards intake/exhaust issues.
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I have a 2008 Ford F150 4.6L and its been broken down in our shop for quite some time now. It started acting funny when I could not get the truck to do over 80kmh. Slow acceleration, and a horrible shaking when it idled. Eventually it was undriveable since I could go above 50kmh anymore. From looking online we replaced the plugs and coils. We removed the intake to find the gaskets were shot so coolant was leaking into the spark plug tubes which could've been the cause of a misfire. Fixed that. Still the same. We replaced the egr valve and dpfe sensor because we keep getting the P0402 excessive egr flow code. Still no luck. My dad is a journeyman hes just not too familiar with newer trucks.
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First, a little background on my truck. 2007 with 5.4, 122000 miles, oil changes with 5-20 Motorcraft and Motorcraft filters, plugs done by dealer 40000 miles ago. The truck has developed a ticking noise, kind of like a lifter (I know these engines don't have lifters) that is most noticeable from the side of the truck near wheel. ticking speeds up with the rpm. Also around same time, between 40-55 under load there is a bit of a stumble, but I can gas thru it. I'm guessing these are related. I'm thinking spark plugs again, but shouldn't I get more than 40000 out of them? I might just take it in, since I've got oil leak somewhere around back of the oil pan, but figured maybe might get some clues first. Also, no CEL.
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07 f150 screw 5.4 104+ miles, loss of power and ticking noise (sounds like no oil)on passengers side, no engine light, no codes, ford dealer changed coil packs and plugs, inspected valve gear on passengers side and nothing seemed out of spec, no broken springs, followers, lifters, manifolds on both sides have been replaced very recently.
The ticking noise began about a week after an oil change, truck runs fine but no power/sluggish. exhaust is magnaflow side exit and seems to be louder inside the cab than usual or could be just me.
Truck had a miss that i was trying to find prior to oil change and ticking noise. it ran well for a week with the tick before (and miss) the loss of power which started after a 30 min drive under load up hill. it almost felt and sounded as if the muffler was dragging on the road for about 100 feet, ran fine for two miles until it was shutdown. restarted fine but flat when you get into it.
Clogged cat/cats; internal damage to muffler, oil issue even tho the gauge reads fine.
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