NHTSA Investigates Ford 7.3-Liter V8 Engine Failures
Federal regulators are reviewing reports of engine damage in 50,000 Ford trucks and vans from the 2021 and 2022 model years.
Updated on Oct. 26, 2026 in Trucks
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The National Highway Traffic Safety Administration (NHTSA) has launched a formal investigation into potential camshaft and lifter defects in Ford vehicles equipped with 7.3-liter V8 engines. The probe follows a 2026 petition alleging that low oil pressure can trigger catastrophic engine failure while vehicles are in motion.
Why it matters
The investigation addresses serious safety concerns regarding a sudden loss of power at highway speeds for approximately 50,000 vehicles. Federal regulators must now determine if these engine failures constitute a systematic defect requiring a nationwide recall.
The investigation encompasses 50,000 vehicles, with reported engine failures occurring between 45,745 and 103,177 miles. The scope involves Ford models including the E-350 van, F59 chassis, and F-750.
The players
National Highway Traffic Safety Administration
This is the primary federal agency responsible for drafting and enforcing vehicle safety standards and conducting investigations into potential automotive defects.
Ford
This is a major American multinational automobile manufacturer that produces a wide range of consumer and commercial vehicles.
The details
The petition claims that inadequate oil pressure at idle leads to excessive wear on lifter rollers and camshaft lobes. It further alleges that Ford previously released a software patch designed to increase idle speeds as a fix, though the company reportedly did not disclose this change to vehicle owners.
Timeline
Ford launched the 7.3-liter V8 engine in 2020.
The vehicles under investigation were produced for the 2021-2022 model years.
A North Carolina fleet owner reported five engine failures in February 2024.
The NHTSA received a citizen petition requesting an investigation in June 2026.
The agency officially opened its investigation in October 2026.
Roadmap
This probe places the 7.3-liter engine under intense scrutiny as regulators evaluate long-term durability in high-mileage commercial fleets. It highlights the ongoing struggle automakers face in balancing emission-compliant engine tuning with the mechanical reliability expected by commercial operators.
Owners of 2021-2022 Ford vehicles with 7.3-liter engines should monitor their oil pressure and idle performance while awaiting potential recall updates from the NHTSA. If a defect is confirmed, affected fleet and individual owners may eventually be entitled to authorized repairs or software updates at no cost.
The takeaway
Vehicle owners experiencing unusual engine behavior should document all maintenance and repair logs to assist in potential future recall claims. Consistent monitoring of engine performance is vital for commercial operators to mitigate risks associated with sudden power loss at highway speeds.
Further reading
For more information on vehicle safety and reliability, visit the Trucks section.
Source note: This article includes information reported by CarBuzz.
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