Ford F-150 (2004-2008) :: 4.6L Running Rough When Accelerate Quickly


May 7, 2015

My f-150 has an intermittent rough idle and consistently runs rough when you accelerate quickly. Vehicle is not throwing any codes?

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Ford F-150 (2004-2008) :: Loud Clunk / Clank From Rear If Accelerate Quickly

I drive a 2006 F-150. I'm new to the forum and already found some good info on the annoying tick coming from my 5.4.

I have recently purchased a ski boat and lately when towing my boat and coming to a stop I feel as light movement coming from the rear of the truck that feels like something slides forward slightly. When I accelerate "it" slides back and if I accelerate quickly, "it" makes a loud clank noise.

I have ruled out hitch, receiver, ball, anything from the boat/trailer etc... It is coming from the transfer case/ spare tire area under the truck and it only appears to do it (or to where it is noticeable) while towing the boat.

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Ford F-150 (2004-2008) :: 2006 - Running Rough When Warm

History: Truck was running okay but acted like a coil was bad when under load. I changed out all the plugs with Motorcraft and put on Summit racing COPs.

After the plug and cop change the truck will run rough after it is warmed up. I changed back to the old COPs and it runs the same.

First I replaced the MAF sensor after finding many posts on here about it. No change.

I read a bunch of posts on oil causing the problem so I used 10-30w and nothing changed.

I searched for a vacuum leak with carb cleaner and couldn't find one. I removed, cleaned and reinstalled the throttle body.

When I did the plug change I disconnected the PCM without disconnecting the battery. Would this cause this type of problem?

I think this is about all the stuff I found to try in the threads that came up through searching.

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Ford F-150 (2004-2008) :: 2006 XLT Started Running Rough Out Of Nowhere Near Idle

I have a Ford F150 XLT. I have 67000 miles on it and the other night it just started running rough out of no where near idle. Once you got over 20mph the rough running would go away. I took it to get an engine change and engine flushed but it came back. It doesnt always run rough near idle or below 20mph. The Ford dealer says my engine has only 22 psi oil pressure near hot idle and cant engage the VCT phazers and they want to replace the whole engine.

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Ford F-150 (2004-2008) :: 2005 - Running Rough And Misfiring Quite Frequently

My 05 was running rough and misfiring quite frequently. After much deliberation, I took it in for a diagnostic hookup. The dealer said my driver side cat was clogged. Lucky for me, I was just under the warranty period(79673 miles). I have had it replaced and I can feel a noticeable difference in the way it runs. Could a clogged cat have made it run that poorly or am is it just in my head that it is running alot better?

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Ford F-150 (2004-2008) :: Running Rough And Skipping After Plug Change?

I just completed a successful second spark plug change, using Motorcraft SP515 plugs just like last time. After reconnecting battery and starting engine, it ran poorly throughout a short road test. Felt like it was skipping. Checked under the hood and found that the #2 fuel injector was disconnected, so I reconnected the injector.

I took another short road trip and it still ran poorly as if skipping. So, this time I disconnected the battery for several minutes while removing the #2 plug thinking I may possibly have fouled the plug by the injector not being connected. I also checked all of the other injector and coil connections. Reconnected battery and took another short trip. It still runs poorly. No codes yet.

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Ford F-150 (2004-2008) :: 2007 - Motor Start Running Rough At Low RPM

I have 07 sscrew with 5.4. 93,000 miles. At start up truck runs perfect. After 20-30 minutes of running motor will start to start running rough at low rpm. Diesel sound. I can rev up and motor clears up and idles fine. Should I replace VCT solenoids? Or phasers? Or both at one time??

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Ford F-150 (2004-2008) :: Misfire / Running Rough And Knocks Like A Diesel

I just bought a 2007 F150 XLT with a Triton 5.4 with 80,000 miles on it. My problem is this, the engine seems to run ok ( a bit rough) until it gets up to running temp and I have driven about 10- 20 miles then most of the time, it starts to act up.

When I am driving it is fine, but when I slow down and come to an idle about 500rpms, it sometimes runs very rough, sounds like a diesel and shakes violently. It feels like it is doing damage. Sometimes it stalls. If I rev it back up immediately it will smooth out.

In speaking to some friends they've suggested things from plugged oil channels, (affecting the cam phasers? All the way to it needing new chains, phasers and guides. I don't want to spend a ton of money doing an improper service repair only to have the issue show up later . But there seems to be a lot of different answers to the same problem. Is the dealer going to be able to diagnose something like this fairly well? Or should I try to narrow it down a bit first?

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Ford F-150 (2004-2008) :: 2005 - Running Rough - Jumped Timing?

I changed the timing chain, phasers, tensioners, guides, and cam sensors and solenoids about 30k miles ago. Truck now has 170k miles. This past weekend engine started running so rough, it had the whole front end shaking. Threw 8 codes..1 bank..lean, bank 2 rich, timing retarded, cylinder G and F misfire, and more codes. It seems to have jumped timing pretty bad.

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Ford F-150 (2004-2008) :: Running Rough / Ticking Noise / Low Mileage?

the F150 of my brother has the follow diseases:rough running ticking noises, low mileage per gallone, blue smoke out of exhaust after start, i have ordered the cam phaser, hope, that will be the reason. But today, my brother means, i have to do a test drive, because the truck has no power. and really, feels like missing of one or two cylinders. Very bad performance. Is it possible, that the reason are the phasers?

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Ford F-150 (2004-2008) :: Running Rough At Stoplight / Service Engine Light Came On

I just had my 04 5.4l engine rebuilt. Ive driven it about 500 mi and it started running rough at a stoplight. I tapped the accelerator and it started running good again but service engine light came on. I pulled the codes and they were P0022, PO345, P0340,and P0430. It has done this several times now. Everything was replaced including the phasers, except for the camshaft sensors. Could they cause this problem?

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Ford F-150 (2004-2008) :: Running Very Rough / Shaking At Low RPMs - Truck Died

On my way into work this morning, my 06 with the 5.4 started running very rough/shaking at low rpms. I could kick it out of overdrive and it would smooth out and seemingly be fine at higher rpms.

This worked out for a couple of miles until the truck just died on me completely. The Edge is showing po351, 352, 353......358 codes. Ignition coil Primary/Secondary circuit fault on every cylinder.

I'm thinking its unlikely that every coil failed simultaneously....computer? When I try to start the truck, it will try to hit on a cylinder or two, but will not run.

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Ford F-150 (2004-2008) :: Running Rough - Rear End Squeaks All The Time When Going Up Or Down A Hill

I have a 2004 Ford F150 with 149,000 miles I have recently put 5,000$ In the motor that is a 5.4 V8 before it would shake and make a terrible noise got a brand new engine from Ford put in by a ford mechanic but now my rear end squeaks like crazy and it is all the time more so when going up or down a hill or when it's shifting more or less or going over a ruff surface that's been going on awhile and was told I needed a new rear end by the same ford mechanic and wanted 1,000 to fix it!

But also said the whining noise that is coming from the front was the transmission and that I shouldn't worry about it to drive it till it goes out but it's a terrible whining noise that you only hear it when your in gear not in park or neural the truck sounds good what causes this whining noise?? Not done yet but recently the front driver side around the wheel has also gotten a squeak mostly when in low speeds and turning to the left! What to do? I'm already replacing the motor! Hopefully these are some easy fixes! I've done some research and the whining from the front that I was told to be the transmission doesn't seem to be that I would think more along the lines of pulley or alt!

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Lexus GX 2004-09 :: Whooshing Hiss Air Noise When Accelerate Quickly

I have 3 sound bytes/videos. Probably best to listen with headphones or decent speakers to get the full effect. The issue has gotten worse. Seems to be worse especially in the a.m. when cold.

When I accelerate fairly quickly, not wide open, there is a weird noise of whooshing air, his or escaping air etc. It could be described as some type of whirring noise too.

I can let off the throttle and push slowly into it and it goes again. Only happens under a decent amount of engine load. Doesn't seem to matter what gear as long as it is under the same type of engine load.

It is coming from the passenger side engine bay as far as I can tell since I'm driving.

Here are the links: YouTube ....

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Touareg :: 2004 V10 TDI Sluggish And Doesn't Downshift To Accelerate Quickly

My 2004 Touareg V10 TDI drives like something's not just quite right, although hard for me to put my finger on. Essentially it feels sluggish, like it doesn't downshift to accelerate as quickly as it should, and like the automatic shifting is slightly jerky. This stuff is all even more noticeable at slower speeds and going up hill, but I think it's true even on city streets.

It's happened a few times, going up a fairly steep hill, that it seems to lose power and I can't get it over 20 or 25 mph even flooring it. Then when I turn the vehicle off and then back on, it can go more or less like normal again. Still, "normal" feels to me like something less than it used to be. I've recently changed the oil and all the filters (air, oil, fuel).

The dealer's service department says they can't find anything and the computer is not giving any error codes, but I know that it's not driving right.

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Ford F-150 (2004-2008) :: Knocking Noise / Running Rough And Stalling - P0340 And P0345

I have a 2006 f150 it was making a knocking noise after the engine oil temp reached 160* and made the noise to 1700rpms. I thought it was the cam phasers so I replaced them. The truck is still making the noise and running rough and stalling but not as bad and not as often. Before it did it all of the time. The truck is timed properly. I had a new cam sensor and tried it but that did not work. I watched vct on the scan tool and both cams are in sycn.

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Ford F-150 (2004-2008) :: Intermittent Rattle / Knock / Running Rough And Dying At Stops

I am working on a customers 08 F-350 5.4l has 135k on it. came in with a severe rattle/knock, running poorly, and dying at stops. ECM gave up 8 codes relating to the timing... Found the phaser replacement steps here on FTE and followed them and replaced the VCT solenoids since i was in there. Customer reported that he replaced the cam sensors already. Ran great for a day, and the next day when I pulled into the shop it gave me a rattle. Not as violent as before but noticeable. I special ordered the wedge and followed the replacement to a 'T'. I have no performance issues and no codes.

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Ford F-150 (2004-2008) :: Running Rough With Code P0171 - Engine Light Stays On?

I just started to have this problem yesterday. Engine light comes on and stays on. Engine shakes and truck won't go over 50 MPH. Autozone code checker came up with P0171.

Truck has about 95K miles and I had the spark plugs replaced at 75K miles.
Transmission was rebuilt at around that time also.

I only drove it to Autozone and back today to post the code and see what everyone's opinion is as to what's wrong.

Here's what the printout says : P0171 "Fuel Trim Bank One Condition"

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Ford F-150 (2004-2008) :: Truck Running Rough / Clunky Like Not Getting Gas - Fuel Pump Module?

First it was the whole spark plug debacle. Now it's the "fuel pump module". Story starts a several months back. On a moist day I was headed out and the truck ran very rough, "clunky", like it wasn't getting gas. After 15 miles and a stop truck ran fine. Didn't think much of it and truck ran fine for month or so. I was then away for a couple days and came home to find my truck wouldn't run (started briefly then died). Local mechanic thought it might be a fuel pump issue but then got truck running thinking it might have been a delayed inertia switch in front panel (I had hit a deer a week or 2 prior). Again, not thinking much of it continued to drive truck with no issues for awhile. Then one rainy morning on my way to work the truck was running very rough and "clunky" again. It died several times and finally for good.

After getting it towed to the mechanics, he figured the fuel pump was finally shot. The end to my long story is it was the fuel pump module (luckily a lot cheaper fix than the fuel pump) - half of the housing was gone (corroded away) adn moisture was shorting the pump electronics. Why, if this module is half encased in plastic do the engineers feel the need to encase the other half in metal (appeared to be cast aluminum)??!!????!! Of course it makes sense to have an electrical unit that is mounted underneath the truck where it can collect all the moisture, snow, salt from the road encased in a corrodable metal housing. No no, don't put it all in plastic, just half of the unit. MAKES PERFECT SENSE!! I thought to be and engineer took some sort of brains and common sense. Must be not at Ford. I can't be the only one with this issue and wondering WHY!!! - it must be widespread??

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Ford F-150 (2004-2008) :: Running Rough Loud And Dies - P0022 Cam Sensor Code

My wife's 06 expedition 5.43v runs rough loud and dies. Not all the time just when it's to hot. I got a code it's p0022 cam sensor. I changed both started the rig up and heard loud rattling like metal maybe chain. It lasted for a the length of my video 1.4mins give or take then went fine, i turned the car off and back on everything seems fine. I know I got her oil done after driving. She had metal/plastic in her oil. I had all plugs done and actually i re did the 8th cylinder plug because it was miss firing and i pulled it by hand with only the socket no ratchet. I'm thinking the chain is going bad if not already bad. Only 113k miles my 04 f150 5.43v lasted 250k before motor swap...

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Ford F-150 (2004-2008) :: Stumbling / Running Rough - Check Engine Light Is Either On Steady Or Flashing

Got an 07 Screw with only 50,000 miles. Yesterday, wife drove it home from work and said it would only do 45mph and didn't sound good. No warning lights were on, she said. I test drove it in the evening and it ran totally fine. Today, she drives it to work and said it ran real rough and "Check Engine" light was on. I picked it up from her work and it idles very rough and slow, and once you hit about 2000 rpm, it runs decent, maybe even normal. Below that, it stumbles and engine doesn't sound right. "Check Engine" light is either ON steady, or flashing. I don't have a code reader, so its likely going to the Ford Dealer Monday. Is there any way to read the code without a reader?

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