Ford F-150 (2004-2008) :: 5.4 XLT Shudders And Jerks Going Up Inclines (big Or Small)
Jul 31, 2015
2004 F150 XLT 4X4, 5.4, 142,000 miles... Plugs had been changed at around 75,000 miles... Shell gas used 99% of the time.
Shudders and jerks going up inclines (big or small). Bad gas is being reported at all the local stations...Started using Sea foam and Lucas fuel line cleaner/ethanol treatment. After three tanks of that, I ran tank down till low fuel came on, kept driving, and no more shudders/jerks and ran great while low fuel light was on.
OK...decided to fill tank with Non ethanol gas this time (not Shell gas), added Sea foam and Lucas fuel line cleaner, and shakes, shudders and jerks all the time now.
Before no check engine lights came on but for once when I romped on the pedal once to blow it out, but it went off once I let off. Today going to work, entering traffic, engine light came on, blinked and stayed on. Truck now shudders and jerks all the time when I give it gas, and can only drive like Paw Paw to keep if from doing that.
Local shop ran test and #7 cylinder is not firing and two lean fuel notices. It will be Tuesday before they can check and if needed, replace coil on #7 cylinder.
I'm thinking of installing a new Fuel Pump Control Modulator as per a thread I read here, but only after they check/replace the coil. AND ALSO...turning the OD off did stop the shutters/jerks.
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I just bought this truck a few weeks ago and rarely hit the freeway. But 2x now when getting on the freeway it will shudder/lose power at about 60MPH. It quickly recovers and then seems perfectly fine. Both times it has happened while going to lunch and when the vehicle is not warmed up. It has not happened on the return trip. I did some searching but nothing seems to be very intermittent like my problem is. Hard acceleration is fine and I have no issues there. Its an 05 Supercrew FX4 with 39K on on it and was babied.
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07 f150 4x4 shudders when starting from a stop going around corners. I was thinking of changing the diff. fluid. Is this a good start?
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Only happens with following sequence:
Accelerate up to 50's mph, let off accelerator, then re-accelerate..especially on an incline. Get a rough jerk motion until I either let off the accelerator or accelerate hard through it. It doesn't seem to occur when the Overdrive is on. No codes are thrown.
Been to two shops, one a general shop to diag the engine and to tranny shop but neither was sure. I guess I'll have to go to the dealer but I was curious what others think of the problem.
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06 with 5.4 and AT. It shudders in overdrive during light to no acceleration. I was told it was the converter. I was also told by a technician in a trans shop that the Trans-X additive for hypoid oil in a posi-trac was ok to use even though the back of the tube says "Not safe for automatic transmissions". Do this is accurate or if the guy was just blowing smoke?
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Truck is 08' with 5.4, 3.55 gears, auto trans. 84k miles. Recently purchased from the TSA fleet trucks, so I have no clue what PM procedures were done prior to me getting it.
I noticed the following: when I get the truck into OD and then slowly decelerate (meaning I let it coast and im not braking) to about 40mph then get on the gas (normal acceleration) the truck bucks hard almost like when your spinning wheels on snow or ice and put the truck in 4wd and the front rear locks. or a limited slip rear that catches when one wheel is spinning.
if I accelerate hard the truck pushes thru it and doesn't buck as bad. I have searched this out and there are several threads about it that describe just about exactly what im talking about, the following have been brought up as possible problems:
1) bad spark plug/s and or coil/s
this seems to be the most common answer to the possible problem.
2)broke valve spring
3) bad torque convertor
So at 84k miles im thinking replacing the spark plugs would be fine to do as a PM. So coils.............should I just go ahead and replace them as well? I found them (motorcraft). does that seem right?
As far as spark plugs, I have already read the horror stories on the 04-08's breaking the plug in the head. I have also read that before 10/07 was the trucks that had the issue. my build date is 02/08. am I good to go with normal removal of the plugs? the best method I have read for removing them is spray carb cleaner down the hole and let it soak overnight and then the next day drive the truck get it nice and hot and remove them right after you park it,,,,
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It just started doing it the only way I can seem to figure out how to explain it is at about 50 to 60 under slight acceleration or uphill it bucks or jerks like you have a trailer jerking. No check engine light this thing is driving me nuts... 2004 f150 5.4 ...
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I have a 2004 f150 fx4. My truck starts to jerk around 50-55 mph at 1100 rpms and again at 80 mph.
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I have a 2006 F150 4x4. When the engine an transmission is cold it jerks/ Bogs when it shifts. After it warms up it doesn't jerk to bad sometimes but you can still notice it. Also when it shifts the RPM's drop low causing it to bog and jerk. RPM's will go from 1600 to about 800 when it shifts. It is and auto transmission. Today I wanted to try something so I pressed the button to turn the over drive off. Well it shift real good with the OD Off. Seem like with the OD Off it keeps the RPM's up a little higher so it doesn't bog and jerk. I put an Edge Programmer on it, but that didn't work. Still does the same thing with or without the programmer. I changed all my spark plug and coil packs. Truck goes great until it shifts.
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09 stx 2wd 4.6L- I have a 2.5'' leveling kit and 33'' bfg a/t tires. The problem is when I make sharp turns, or turn and go over small bumps. Whats happening is something seems to catching or rubbing it kind of jerks towards the opposite of where I am turning and causes the traction control to slow my truck (sucks on tight off-ramps/ u-turns). this happens at pretty much any speed although it gets worse as speed increases. At first I thought it was the steering stoppers but don't have any wear on them, tires do not rub anywhere. My dealer and a local off road shop cant figure it out...
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Its a 2007 f150 v6. has 55,000 miles. just got her new tires for Christmas. the truck has doing this for awhile. when you use the brakes the pedal pulsates and the truck jerks back and forth. Feels like bent rotor or something. I've been doing it about a year keeps getting worse. Last year I had the rotors turned and put new pads on got a little better. But not for long continued to get worse again. So I just bought new rotors and pads and still sucks. I thought it could be a bent rim so I just rotated the tires and still no better. Where should i go from here? calipers? something in the front end loose?
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I have a factory plastic bedliner in my 05 F150 with the 8ft bed. The tie downs in the front of the bed have a small gap that allows water to leak under the bedliner. I have tried using silicone caulk around the seam but the flexing of the liner makes it come unglued.
How to keep the water from getting under? The water that makes its way through the seam drains out of the factory holes in the front of the bed but I still worry about the moisture under there causing rust.
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I have a switch under the dash that Im not quite sure what it does. I have an 07 XLT supercrew. Has the factory alarm I imagine. My brother has the same year, but no switch. Doesn't seem to do anything, tried to trace wires, the seem to join up with some other wires under neath the steering console area.
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Long story short, I have a small vacuum leak in the 4wd system. I disconnected the lines going to the hubs to prevent grinding them to pieces as they are brand new. This, of course lock the front hubs in and disengages the X-fer case in 2wd.
It is not engaging in 4wd unless I select it, so I don't imagine it hurting anything in the X-fer case or anything. Other than the extra rolling mass, is this okay to operate at until I resolve my vacuum issue, provided I close all openings and places for trash to get in?
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I'm adding an aftermarket intake to my 04' 5.4 & noticed on the bottom of my intake there was maybe 10 small drilled holes, ((1/8") in diameter. Are these holes OEM from the factory, & what is there purpose? Seems to me that the holes would suck in "some" hot air from the engine bay, yet it's main sourse of air is from the inside of the driver's side inner fender well.
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Noticed a small whine coming from the A/C compressor? I caught ear of it the other morning when I was putting the trash on the street and the truck was running. It's definitely the A/C because when you cut it off the noise goes away.
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OK so I noticed the last few weeks that I have just a small shutter coming from my rear end every now and then. It feels like it locks up for just a sec and then is fine. It will normally do this earlier in the day and maybe once or twice. Is this telling me its time to add some more friction modifier into the rear diff or do I have another issue. I don't notice it once the truck is warmed up and been driving around some.
2006 F150 Screw Fx4
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I just bought a 2007 fx 4 with 116000 miles it has the triton 5.4. I know I test drove it good etc well I am out of town with work right now and drive it on a 400 mile trip and noticed that when you are in overdrive and going up a small incline it acts like the truck is locking up, if i get on the gas a lil and make it shift it stops.
The truck shifts smooth and everything on this truck is tight no clunks or nothing. Ihope its not the transmission and sometimes after putting it in park and idling and turnings steering wheel it will start idling really rough . What could this be only does it speeds 50-57 like i said if i make it shift it stops....
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I have a 2004 F150 4x4 5.4. Over the last few weeks I've noticed that when the truck has been parked for even a short time, when I start to move out I am getting a thumping noise from the rear, almost sounds and feels as though I am driving over small speed bumps, but once i get going it seems fine. Where to start?
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My Chevy Malibu is having a bit of trouble.
When I drive on inclines my reservoir leaks. It did it way more when I lived up a hill, but since I've moved to a more flat area, I barely see it.
A more serious issue I am having is with my ignition/gear shift. When I try to turn the car off it will not go to the OFF position. If I wiggle the handle, it will then go off.
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When pulling my trailer away from a stop transmission shudders in first gear, feels like t c. Once it changes to 2nd, it clears up. Getting ready to take in for service. Any thoughts? Still under bumper to bumper warrenty. 2008 6.4 auto f 350. 26k miles
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