It’s no secret that trucks are the backbone of America. These do-it-all machines are practical and the ultimate choice whether you’re in trades or just want plenty of towing/hauling. While many of these trucks are incredibly popular, the Ford F150 sits at the top.
It has managed to do just that, thanks to its performance and no-nonsense durability. Speaking of performance, the Ford F150 has had quite a few engine options, but we are interested in the 5.0 engine.
The American carmaker refers to this engine as the Coyote. Interestingly, this engine can also be found in another incredibly popular vehicle — the Mustang. While it’s the same engine platform, the 5.0 engines are optimized for their applications.
There are a lot of good things to be said about this V8 engine, but it isn’t perfect. This is why we’ve taken it upon ourselves to discuss Ford F150 5.0 engine problems.
Article updated on 05.31.2024
Ford 5.0 Coyote Engine – What is it?
The Coyote or Ford 5.0 engine has been and continues to be popular because it’s a naturally aspirated V8 engine. This configuration has proven itself over the years and offers a perfect balance of performance and durability. The Coyote uses dual overhead camshafts and variable valve timing, making it a modern power plant with decent efficiency.
The Ford 5.0 was first introduced in 2011, more specifically with the 12th generation F150. While this engine has witnessed changes over the years, the architecture and the base remain pretty much the same.
One major change was seen in 2017 when the engine got the option of a 10-speed automatic transmission instead of the 6-speed unit it had before. Here’s how the engine evolved in terms of numbers over the years:
- 2011-2014 Ford F150 (12th generation) – 360 HP at 5500 RPM and 380 NM at 4250 RPM – (6-speed automatic transmission)
- 2015-2017 Ford F150 (13th generation) – 385 HP at 5752 RPM and 487 NM at 3850 RPM – (6-speed automatic transmission)
- 2018-2020 Ford F150 (13th generation) – 395 HP at 5750 RPM and 400 NM at 4500 RPM – (10-speed automatic transmission)
- 2021 onwards Ford F150 (14th generation) – 400 HP at 6000 RPM and 410 lb-ft at 4250 RPM – (10-speed automatic transmission)
Identifying the Most Common Ford F150 5.0 Engine Problems
With the basic specifications of the engine out of the way, we can move on to the main subject — Ford F150 5.0 engine problems. The engine seen on the latest F150 (14th generation) doesn’t have as many reported issues as it’s still fairly new. On top of that, the company has already addressed a few issues that have popped up initially.
Timing Chain Tensioner Failure
Let’s begin with what is undoubtedly one of the scariest Ford F150 5.0 engine problems — timing chain tensioner failure. As the title suggests, the tensioner and timing chain tensioner arm are both known to fail. When the timing chain loses the required tension, it can lead to varying degrees of problems.
If it has lost only a small amount of tension, the problem will make itself known by producing an audible rattle. On the other hand, if there’s too much slack, the engine will skip timing causing pistons and valves to shake hands. And that never ends well.
If caught early, a timing chain replacement will prevent any severe consequences. However, most only notice that something is wrong when it’s already too late. Now you know why we called it one of the most dangerous Ford F150 5.0 engine problems.
Luckily though, this problem only affects the first year of production of this engine, which is 2011. Ford quickly became aware of this problem and issued a technical service bulletin to rectify it.
Cam Phaser Malfunctions
Cam phaser malfunctions are a notable issue with the Ford F150 5.0 engine. Cam phasers adjust
the camshaft timing to optimize performance but can cause several problems when they fail. Common symptoms include a loud rattling noise during startup, rough idling, and reduced fuel efficiency. A check engine light may also appear.
These malfunctions often stem from low oil pressure, usually due to infrequent engine oil changes or incorrect oil types. The cam phasers rely on hydraulic pressure to operate, so maintaining proper oil levels and using the recommended oil is crucial. Wear and tear from heavy loads or harsh driving conditions can also contribute to cam phaser issues.
To address cam phaser malfunctions, it is important to get the vehicle inspected at the first sign of trouble. Ignoring the problem can lead to more severe engine damage. Regular maintenance, including timely oil changes and using the correct oil grade, is essential.
We recommend staying proactive with these maintenance tasks and considering aftermarket cam phasers, which may offer better durability. By taking these steps, you can keep your engine running smoothly and avoid the headaches associated with cam phaser malfunctions.
Dirty Mass Air-Flow Sensor
To fully understand our next topic, read our Mass Air Flow Sensor Troubleshooting Guide first. The Ford F150’s mass air flow sensor rarely fails outright; instead, it tends to get dirty sooner than expected.
While including the mass air flow sensor on the Ford F150 5.0 engine problem list might seem unfair, it is crucial to be aware of all potential issues. Reports indicate that this problem typically arises around the 100,000-mile mark.
As the mass air flow sensor begins to malfunction, it impacts the engine’s performance, with the most noticeable symptom being an engine that no longer runs smoothly.
Ford recommends replacing the mass air flow sensor at the 100,000-mile service interval. In many instances, simply cleaning the sensor can resolve the issue. However, if the problem continues, replacement is the only solution.
Coolant Leak
A coolant leak is one of the most widely reported problems with the Ford F150 5.0 engine. This problem is common across generations of this popular truck. And yes, Ford F150s, as new as 2021 models, face the same problem.
To make things worse, this is happening despite a major cooling system revision for the latest generation. Two main parts are likely causing this leak: the T-connector and the upper radiator hose.
It’s easy to think that you can just replace these, but doing so requires disassembling several other components. Overall, this can be a fairly time-consuming process, but it’s not too difficult.
Many online guides are dedicated to fixing this problem, which can be a great reference point. Remember that some suggest only replacing the O-ring as a cheaper fix. However, that’s only a temporary fix. In the long run, spending a little more on a proper solution is better.
Engine Cooling Fans Running Continuously
One of the lesser-known Ford F150 5.0 engine problems is related to the engine coolant temperature sensor. This sensor measures the temperature of coolant on the cylinder head, and if it fails, it can cause an overheating warning that may trigger your radiator fan to go into full blast.
On a side note, the radiator fan may also work continuously due to air conditioning refrigerant pressures being too high. Ford has released a technical service bulletin (TSB) to address this. The problem with the air conditioning is said to be caused by the evaporator freezing due to the faulty evaporator temperature sensor.
Fixing this problem involves replacing the whole evaporator. If you are facing this problem, we recommend taking your F150 to an authorized Ford service station, as this might require some professional diagnosis and extensive repair.
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Excessive Oil Consumption and Leaks
Excessive engine oil consumption on the Ford F150 with a 5.0 engine significantly affects the model years between 2018 and 2020. Owners have reported the oil change indicator lighting up as early as 3,000 miles, even without visible leaks.
Excessive oil consumption can lead to low oil levels, poor lubrication, engine rattling, stalling, and potential engine failure. Additionally, it may allegedly damage oxygen sensors and catalytic converters and prematurely wear spark plugs. This issue has even led to a class action lawsuit, highlighting the severity and widespread nature of the problem.
The suspected cause of excessive oil consumption is defective pistons and piston ring assemblies, which allow oil to enter the engine’s combustion chamber, although this hasn’t been definitively proven yet. Another contributing factor is the positive crankshaft ventilation (PCV) system.
According to a Technical Service Bulletin (TSB), the high intake manifold vacuum during deceleration fuel shut-off (DFSO) pulls engine oil from the crankcase, valve guides, and PCV system into the combustion chamber.
There is no definitive solution currently, but the TSB provides interim instructions. These include reprogramming the PCM to reduce engine vacuum during some DFSO events, installing a new engine oil level sensor, and changing the engine oil and filter.
Blown Head Gasket
The Ford F150 5.0 engine problems list wouldn’t be complete without mentioning the infamous head gasket issue. The Coyote engine, especially early ones, is known to have failure points in the head gasket.
Multiple owners have reported an oil leak from the head gasket. Once Ford became aware of the problem, it changed the head gaskets, front gaskets, and o-rings to prevent this problem from recurring.
If you have an earlier Ford F150, you can either get the gaskets replaced preventively or inspect them regularly. It’s common for oil seepage from the head gasket to go unnoticed on these engines; however, you’ll see engine oil in the expansion tank if things get out of hand. While the right bank is more prone to failure, replacing both head gaskets simultaneously is best.
Troubles with Ignition Coil Failures
Ignition coil failures are another common issue with the Ford F150 5.0 engine. These coils are vital for converting the battery’s voltage into a spark that ignites the fuel. When they fail, it can lead to several performance problems.
Engine misfires, rough idling, a noticeable drop in power and acceleration, and poor fuel economy are signs of ignition coil issues. You might also experience difficulty starting the engine and notice a check engine light on the dashboard.
Ignition coil failures can be caused by various factors. Over time, the coils can wear out due to heat and vibration, leading to internal shorts or open circuits. Moisture can also infiltrate the coils, causing corrosion and eventual failure. Additionally, using low-quality spark plugs or not replacing them at the recommended intervals can put extra strain on the ignition coils.
Addressing ignition coil failures involves diagnosing and replacing the faulty coils. It’s essential to use high-quality replacement parts to ensure longevity. Regularly checking and replacing spark plugs as part of your vehicle’s maintenance routine can also help reduce the strain on ignition coils.
Engine Misfires
Engine misfires are a frequent issue encountered in the Ford F150 5.0 engine. These misfires can lead to reduced engine performance and increased fuel consumption, making them important to address promptly.
Typical signs of engine misfires include a rough idle, noticeable loss of power, poor acceleration, and decreased fuel efficiency. Additionally, the check engine light might illuminate, indicating an issue that needs attention.
There are several potential causes for engine misfires in the Ford F150 5.0 engine:
Bad Spark Plugs — Worn or faulty spark plugs are a common cause of misfires. They can fail to ignite the air-fuel mixture properly, leading to misfires. It’s recommended that spark plugs be replaced every 60,000 to 100,000 miles, depending on your driving conditions.
Faulty Ignition Coils — Worn-out or damaged ignition coils can also cause misfires. They are responsible for converting the battery’s voltage into a spark, and when they fail, one or more cylinders may not fire correctly.
Dirty or Damaged Fuel Injectors — Clogged or malfunctioning fuel injectors can prevent the correct amount of fuel from entering the combustion chamber, causing the engine to run lean and misfire.
Cam Phaser Issues — A failing cam phaser can disrupt the timing of the valves, leading to misfires. This is a known issue in the 5.0 engine, particularly affecting multiple cylinders simultaneously.
PCM Module Malfunction — The Powertrain Control Module (PCM), which controls various engine functions, can cause misfires if it malfunctions.
To address engine misfires, start by diagnosing the specific cause using an OBD-II scanner to read fault codes. A common fix is replacing faulty spark plugs and ignition coils. Regular maintenance, including timely spark plug replacement and fuel system cleaning, is essential to prevent misfires.
If issues persist, inspecting the cam phasers and PCM module more thoroughly might be necessary.
Fuel Injection System Failure
Some of the more recent F150s that run the Coyote engine, namely the 2018 to 2020 models, began experiencing fuel injection system issues. As a result, the affected trucks lost power, hesitated upon acceleration, and generally showed signs of fuel starvation.
The most notable cause was partially due to faulty fuel injectors, fuel injector O rings, and a faulty fuel rail pressure sensor. Additionally, using a high-quality fuel injector cleaner can help if dirty injectors are the issue.
Poor Throttle Response
The truck’s throttle response is last on the Ford F150 5.0 engine problems list. While the latest generation F150 doesn’t have this problem, it has been reported numerous times in previous generations.
The cause of this problem is a malfunctioning throttle body. If you notice that the truck has trouble starting, poor or unusual acceleration, uneven idle, and/or a check engine light, you are likely facing this problem.
The throttle body of a vehicle requires periodic cleaning using a dedicated throttle body cleaner. If the problem persists, resetting the throttle body unit with the help of a scan tool is recommended. This also resets the throttle position sensor, which has been known to solve the issue.
If this still doesn’t fix a problem, you can perform a hard reset. We recommend following the steps provided by Ford for this.
Diagnosing Engine Problems of Ford F150 5.0
Diagnosing engine problems in the Ford F150 5.0 is crucial for maintaining performance and longevity. Visual inspection and utilizing an OBD-II scanner can give you a definitive idea of what could have gone wrong with your engine.
Visual Inspections
When performing a visual inspection on your Ford F150 5.0 engine, several critical areas must be checked to ensure the engine is in good condition. Start by inspecting the accessory drive belts for any signs of wear or fraying. Next, check the battery performance and clean the terminals if necessary. Inspecting the engine air filter and replacing it if it appears dirty is also essential.
Look for any signs of leaks or obstructions in the exhaust system. Inspect under the vehicle and in the engine bay for fluid or oil leaks. Ensure that all hoses are in good condition without cracks or signs of wear. While under, you can also check the suspension and steering components for wear and tear.
Recognizing early warning signs can help you address potential issues before they become severe. Common signs to watch include unusual engine noises, such as knocking or rattling, which could indicate problems like cam phaser malfunctions.
Pay attention to rough idling, misfires, or decreased acceleration, which could signal issues with the spark plugs, ignition coils, or fuel injectors.
Using OBD-II Scanners Diagnostic Tools
OBD-II scanners are essential for diagnosing engine problems in modern vehicles, including the Ford F150 5.0. These scanners plug into the vehicle’s OBD-II port, allowing you to access real-time data and retrieve error codes that indicate specific issues.
Reading and interpreting error codes from an OBD-II scanner involves a few straightforward steps. Once the scanner is connected to the vehicle’s OBD-II port, it will display any stored error codes. Each code corresponds to a specific issue within the engine or related systems.
For example, a P0305 code indicates a misfire in cylinder 5, which could be caused by faulty spark plugs, ignition coils, or fuel injectors. Understanding these codes helps you pinpoint the exact problem, allowing for targeted repairs.
It’s important to consult the vehicle’s manual or a reliable source to decode the specific error codes. Many OBD-II scanners have built-in libraries to help you interpret the codes, but additional research might be necessary for more complex issues.
Preventative Maintenance Tips
Regular preventative maintenance is key to ensuring the longevity and optimal performance of your Ford F150 5.0 engine. This covers essential maintenance tips, including regular oil changes, coolant system upkeep, and timing chain care.
Regular Oil Changes
For the Ford F150 5.0, using high-quality, manufacturer-recommended oil is crucial. Typically, synthetic oils like 5W-30 are recommended. Regular oil changes should be performed every 5,000 miles (six months) or when the oil change message appears on the instrument cluster. Frequent short trips or towing heavy loads may necessitate more frequent changes.
Regular oil changes help maintain engine lubrication, reduce wear and tear on engine components, and improve overall performance and fuel efficiency. Fresh oil also aids in removing contaminants and preventing sludge buildup, ensuring smoother engine operation and extending the engine’s lifespan.
Coolant System Maintenance
Regularly checking and maintaining the coolant system is vital to prevent overheating and severe engine damage. Coolant helps regulate the engine’s temperature, preventing it from overheating in the summer and freezing in the winter.
Inspect the coolant levels regularly and top up if necessary. It’s also important to check for leaks, inspect the radiator and hoses for any signs of wear or damage, and ensure the coolant mixture is correctly balanced. Replacing the coolant according to the manufacturer’s schedule, typically every 100,000 miles or five years, is also recommended.
Timing Chain Maintenance
Signs that your timing chain may need attention include rattling noises from the engine, difficulty starting, poor engine performance, and the check engine light coming on. These symptoms often indicate that the timing chain may be loose or worn and requires inspection.
Regular oil changes are essential for the longevity of the timing chain since they ensure proper lubrication. Additionally, avoiding hard driving and keeping up with overall engine maintenance can help extend the life of the timing chain. If you notice any symptoms of a failing timing chain, a professional must inspect and replace it to avoid catastrophic engine damage.
By following these preventative maintenance tips, you can keep your Ford F150 5.0 engine running smoothly and efficiently for years to come. Regular attention to oil changes, coolant system maintenance, and timing chain care will help prevent major issues and ensure reliable performance.
Don’t Let These Ford 150 5.0 Engine Problems Scare You Away
The Ford F150 5.0 engine problems list might be long, but it’s not something that should scare you away. This engine has a long list of good qualities. Despite the problems, this engine is still considered to be a reliable option.
The legendary Coyote has been successfully powering the F150 for over 10 years, and that itself should be a clear indicator of what it’s capable of. With every carmaker making the switch to smaller turbocharged engines, the 5.0 is the last of its kind. We at Newparts.com stock the highest-quality spares to help you take care of that V8 so it can take care of you!
