When it comes to powerful and capable engines, a V8 is about as good as it gets. And when you need a V8 with some serious horsepower and hauling capabilities, Ford’s 5.4L V8 can be a great choice. Still, every engine can run into trouble from time to time.
What problems are most commonly reported with the Ford 5.4L motor?
Based on NHTSA complaints and VehicleHistory.com reviews, frequent issues include:
- Spark plug problems
- Engine vibrations and shaking
- Fuel pump failure
For your reference, we’ve covered each of these common complaints about the Ford 5.4L engine below, as well as some possible explanations and repairs for each issue. This information can help inform your purchase of a Ford F-150, Expedition, or other Ford model equipped with this popular engine!
More about the Ford 5.4L Motor
Ford’s 5.4L V8 engine (also known as the Triton engine) was introduced in 1997 as an optional engine on the 1997 F-Series line of pickup trucks. The 5.4L Triton engine was marketed under this name through the 2010 model year, when it was replaced by the even more powerful 5.8L Trinity V8.
In addition to being offered on the Ford F-Series (including the popular F-150), the 5.4L V8 engine could also be found on some Ford Expedition, E-Series, and Lincoln Navigator models.
Common Problems With the Ford 5.4L Motor
2004 Ford F-150: Spark Plug Problems
NHTSA Complaint ID: 11209100, 10991722
Unfortunately, there have been some commonly reported issues with Ford’s 5.4L V8 engine over the years. One of the most common complaints is with this engine configuration having problems with its spark plugs in certain Ford F-150 trucks, including the 2004 F-150.
In one NHTSA complaint filed in 2019, the owner of a 2004 F-150 reports that the vehicle’s engine stalled while driving. Upon taking the vehicle to an independent mechanic, the problem was diagnosed as a spark plug issue. However, the mechanic commented that the spark plugs for this engine are notorious for failing.
In another NHTSA complaint, a 2004 F-150 owner maintains that one of the engine’s spark plugs “popped out” while driving at freeway speeds. Upon taking the truck to a Ford dealer for repair, another spark plug unexpectedly popped out while mechanics were working on the vehicle.
These complaints line up with multiple VehicleHistory.com reviews that mention issues with spark plugs blowing out or even getting stuck in place.
2005 Ford Expedition: Engine Vibrations and Shaking
NHTSA Complaint ID: 10948179, 11269009
The 2005 Ford Expedition, which was available with Ford’s 5.4L V8 engine, also had some issues with reported front-end vibrations and shaking. One owner filed an NHTSA complaint in 2017, stating that the vehicle vibrates severely at highway speeds. Allegedly, “vibration is so bad, the vehicle rocks side-to-side while driving.”
Another 2005 Expedition owner reports that the engine makes a rattling noise while driving. However, neither complaint mentions whether these vehicles were diagnosed at a Ford service center. Common causes of engine vibration and shaking include worn spark plugs, loose hoses, and bad timing belts—so these are possible repairs to consider.
2006 Ford F-150: Fuel Pump Failure
NHTSA Complaint ID: 10948553, 10617765
Ford’s 5.4L V8 engine has also had some ongoing issues with its fuel pumps, particularly in the 2006 Ford F-150. One complaint on the NHTSA page was filed in 2017 and reports that the fuel pump control module became corroded, causing the engine on the truck to stall completely.
In another complaint filed with the NHTSA in 2014, the owner of a 2006 F-150 claims that the truck stalled and had to be towed to a dealer. Upon inspection, the dealer found that the fuel pump module had corroded and cracked. The owner speculates that this was caused by a poor design.
How to Check the Vehicle History on a Used Ford
Whether you’re thinking about buying a used F-150, Expedition, or any other Ford model with a 5.4L V8 engine, it’s always a good idea to check its Vehicle History before you sign on that dotted line.
Running a Vehicle History report is quick, easy, and (best of all) free! You’ll enjoy instant access to owner reviews, safety ratings, fuel economy ratings, specs, and more to guide your purchase. From there, you can drive off the lot in your new-to-you car with a little more peace of mind.
