Complete engine failure or seizure on the 2004 Ford F-150
3 fires 3 of the 7 reports for this failure mention a crash, a fire, an injury or a death. Those are the owner's words on the complaint form, not a verified finding, and one report can mention more than one.
Only 6 reports for this mode came with an odometer reading, which is too few for percentiles to mean anything. The page is here because someone linked to it; treat the figures as anecdotes, and see the full report for this year instead.
When complete engine failure or seizure gets reported
There are 7 reports of complete engine failure or seizure on the 2004 Ford F-150, 6 with a mileage attached. That is too few to place the failure on the odometer with any confidence.
A part like this is normally expected to survive 105,000 miles. It is the 39th most-reported problem on this model year.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| — | — | 117,243 miles | — | — |
Read the 10th percentile as “one report in ten arrived this early”. Exact figures are shown in this table because it is the table of record; everywhere else on the site they are rounded to the precision the sample can carry.
What a percentile can and cannot tell you here
These five numbers describe the readings owners gave, in order. The median is the middle one: half the reports arrived below it. The 10th and 90th are the edges of the bulk of the distribution, and the distance between them is the part worth reading. A tight spread — say 70,000 to 95,000 miles — points at something that wears out on a schedule, and the schedule is knowable. A wide one, 20,000 to 190,000, points at a fault that hits some cars and never troubles others, which means the mileage on the listing in front of you tells you very little about your odds.
What these figures are not is a survival curve. Every reading here comes from a car whose owner filed a complaint, so the sample contains only failures: it cannot say what share of the fleet made it past 150,000 miles untouched, because those owners had nothing to report. Nor is the mileage the moment of failure — it is the odometer reading as recalled at the time of filing, which may be weeks later and is sometimes rounded to the nearest ten thousand by the person typing it.
Percentiles are shown at all only once 8 readings exist for the vehicle and mode. Below that the middle of a handful of numbers is noise wearing a decimal point, so the figures are withheld rather than dressed up.
What happens, and what it costs
Of these reports, 3 a fire is mentioned. Owners write their own complaints and the agency does not verify them, so read this as what the reports say happened rather than as a confirmed count.
Putting it right typically runs $4,500–$12,000 at an independent US shop. That range is an editorial estimate held in this site's failure-mode catalogue, not a figure from NHTSA, and it is a repair cost rather than a diagnosis cost.
This mode is classified as critical, which means a failure can leave the car unable to stop, steer, or stay out of the way of traffic. It is weighted accordingly in the risk score.
The same failure on other years
The same failure is reported on 20 model years of this car. It shows up earliest on the 2018, at a median of 800 miles, and latest on the 2021 at 155,000 miles.
By volume the 1997 carries the most reports, with 34; the 2004 has 7. A mode that appears across most years of a model is usually a design choice rather than a bad batch.
If one year stands out to the left, that is the year to avoid; if the whole line sits at a similar mileage, this is wear rather than a defect in one production run.
Tick median reported mileage Solid middle half of reports Faint 10th to 90th percentile Colour how bad the failure is when it happens
What owners wrote
Verbatim from NHTSA complaint narratives, trimmed for length. The mileage is the one the owner gave.
While traveling on I-70, westbound through illinois, my ford f-150 began shaking violently and was barely controllable. There was no previous warning of any kind that there was a problem with the truck. I managed to get to an exit and got the truck to the nearest ford dealer, in the small town of greenville, il. The ford mechanic diagnosed the problem as catastrophic engine failure. At least two valve stems had broken and the valves had fallen into the cylinders. They could not tell me what caused the failure but showed me a few of the parts they had removed (a broken valve spring, pieces of valve stem and a frozen rocker arm). The engine had been scrupulously maintained and the oil and filter were changed at least every 5000 miles. The engine was clean and there was plenty of oil. I have since seen several on-line posts about this engine (ford's 5.4 liter v-8 gas) failing due to faulty valve springs failing. I believe this engine has serious flaws that might cause serious problems if engine failure happens at high speed in traffic. Fortunately, I was in very light traffic when the failure happened.
2 1/2 years ago my husband purchased a used 2004 f-150 fx4 with the 5.4 tritan engine (with a 5 for the 8th digit in the VIN) along with a 2 year extended warranty (that covered the engine among other things), from a ford dealership. It had just under 50,000 miles. Over time, we had the suggested oil changes, put new tires on, new battery and had the spark plugs changed. The problem I am most upset about is the ??ticking?? Sound I heard the day my husband brought the truck home. When I asked about it he said he already asked the dealership what the sound was and they said it was just how ??this engine sounds??. It was such a strange sound, we asked two other ford dealership and they stated the same thing, but they never looked into it. One morning in october, my husband was driving to work and the truck started shaking severely. It was so bad he had difficulty controlling the vehicle. If it wasn't on a back road, we know he would have been in an accident. We took it to court street ford and they said they had to run diagnostics on it. They received a code of 340, but couldn't find anything wrong. The ford dealership brought ford…
The engine blew a spark plug out my grandfather bought this truck new it never had them removed before it did not come lose it blew threads and all out do your god dam job make ford fix this before someone gets killed from a fire over this when the plug pops out it blows fuel out on the coil pack with it with it shooting lighting bolts if I had been a person with no mechanical knowledge it would have got bad I popped the hood and flames were popping out around the coil pack that is beating the crap out of the fuel rail if I had drove the truck or had been on the freeway that fuel rail would have been busted then a fire ball I can send u picks or make a video of the coil pack smacking the fuel rail. *tr
Also reported on the 2004 Ford F-150
Other visibility problem
Window regulator or power window failure
Other engine problem
Other powertrain problem
Other body or interior problem
Other suspension problem
How far this goes
This page is kept out of search results because 7 reports is not enough to publish percentiles from. It stays reachable because somebody looking at this exact car would rather see the reports than be told there are none.
Complaints are voluntary, so 7 is a floor and not a count of affected cars. Mileages are typed in by owners and cluster on round numbers. And the mode itself is assigned by software reading the complaint text, which is reliable in bulk and fallible one report at a time.
Questions this page answers
At what mileage does complete engine failure or seizure happen on the 2004 Ford F-150?
Across 6 owner reports that included an odometer reading, half were filed by 115,000 miles. A quarter were filed before — and a quarter after —. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is complete engine failure or seizure on the 2004 Ford F-150?
7 reports have been filed with NHTSA, about 0.0 per 1,000 vehicles. Complaints are voluntary, so this is a floor rather than a count of affected cars.
What this is and is not. These are the mileages at which owners chose to complain to a federal agency, which is not the same as the mileage at which the part fails on every car. It skews toward failures that happened outside warranty, cost real money, or frightened someone. It is still the only public dataset that carries failure mileage at all, and the shape of a few hundred readings is informative even when a single one is not. Methodology · JSON · this failure on other cars
Source Owner complaints and recall records published by the US National Highway Traffic Safety Administration, model years 1996–2027 Figures rebuilt Published by AtWhatMileage How every figure is computed