RECALL 25S75 (Ford), 25V455 (NHTSA) Low Pressure Fuel Pump Failure

[NGOT8R]

If and/or when the pump fails, there may not be much a warning at all. Such was the case when mine went. Car was purring like a kitten and then it suddenly stumbled and stalled. I was sitting first up in the turn lane at one of the busiest intersections in town too. It was not a good day, especially with a $200 tow bill to add insult to injury.

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[ModernSVO]

If and/or when the pump fails, there may not be much a warning at all. Such was the case when mine went. Car was purring like a kitten and then it suddenly stumbled and stalled. I was sitting first up in the turn lane at one of the busiest intersections in town too. It was not a good day, especially with a $200 tow bill to add insult to injury.

AAA has paid for itself every year having it. the wait can sometimes suck, but no tow bill is nice.
Mine gets used mostly when I break something at the track in the pyle of parts 70's pos thrown together.

 

[IPOGT]

Damn. Just got one also.

 

[IPOGT]

Damn. Just got one also.

Guess the next time I drive it will be when they schedule my repair. Great.
First it was my 16 GT new with the evaporator and now this. Can I get a new Mustang that doesn’t have to be taken apart?

 

[Skye]

Some more insight of the exact problem. Excerpts follow. Full details attached.

Total number of potentially involved: 850,318

Estimated percentage with defect: 10%

Number of [Mustangs] potentially involved: 24,790

https://static.nhtsa.gov/odi/rcl/2025/RCLRPT-25V455-7716.pdf

Ford’s team reviewed supplier process and maintenance records to determine the population of affected parts. The Ford process is capable of tracing Fuel Delivery Module (FDM) production to the vehicle in which the low-pressure fuel pump and jet pump is installed.

Component Name 3: SDR & PMP ASY FU/TNK
Component Description: Fuel Delivery Module – Ford Mustang
Component Part Number: JR3C-9H307-**

The remedy is under development.

In September 2022, Ford’s Critical Concern Review Group (CCRG) opened an investigation into an increase in warranty claims and part returns related to Fuel Delivery Modules (FDM) on certain 2021- 2022 Model Year (MY) vehicles. The FDMs on these vehicles contained a specific variant of low pressure fuel pump and jet pump.

Teardown analysis indicated that jet pump orifices on some returned parts were blocked by contamination. The source of contamination was not confirmed. The CCRG reviewed the available warranty data and noted that the rate of failures had decreased significantly after the supplier implemented several corrective actions from December 2021 through September 2022 to reduce contamination and production variation.

In July 2023, the CCRG reviewed the warranty data after the monitor period to confirm that the supplier’s corrective actions had successfully resolved this concern in the field. Based on the available warranty data, Ford closed the investigation because the field data showed that the rate of failures was low and the failure could be progressive in nature. Ford was not aware of any accidents, fires, injuries or property damage attributed to failure of the FDM.

On May 22, 2025, the CCRG determined that the number of warranty claims had increased during summer months and in warm weather states. Connected vehicle data was utilized to further understand the conditions, such as fuel tank fill levels and diagnostic trouble codes, leading to further understanding of the root cause.

On June 9, 2025, the CCRG reviewed vehicle production dates for warranty claims to determine whether something had changed in the supplier’s manufacturing process. The CCRG discovered that vehicles were all produced between July 2021 and July 2022. On June 9, 2025, through June 10, 2025, Ford Product Development (PD) and Ford Supplier Technical Assistance (STA) conducted a review of the supplier’s manufacturing process for the parts used on these vehicles. Ford found that the supplier had made changes to the jet pump process to accommodate an increase in build complexity in June 2021 and identified that a tier 3 supplier for the GEN 4.6 fuel pump pumping chamber was not statistically capable for internal clearances and utilizing the full tolerance range of the supplier specifications. The low clearances resulted in an increase of internal friction and sensitivity to vapor lock beginning in early July 2021.

As of June 6, 2025, 1,860 warranty claims (received from September 2, 2021 to May 31, 2025) have been identified related to the investigation. As of June 24, 2025, 28 field reports (received from January 5, 2022 to March 31, 2025) and 57 customer service reports (received from October 18, 2021 to May 22, 2025) have been identified related to the concern. Vehicles produced from July 1, 2021, through July 31, 2022, have a projected fuel delivery module failure rate of 8.9 R/1000 at 10 years/150,000 miles of vehicle service.

 

[RiotfunK]

What about us with BAPs?

 

[Skye]

What about us with BAPs?

I don't think we'll be able to give a definitive answer on that one. We've had several threads of mods and warranties. Mods and recalls, I don't remember seeing one. I couldn't say how one dealer would interpret mod/warranty versus mod/recall.

If the vehicle is captured by the recall, that vehicle is listed as such in Ford's and NHTSA's systems until cleared. If then taken in, I'd think it'd be down to that dealer and the relationship that person might have with them. Maybe some dealers would be understanding and perform the recall action, focusing only on the factory bits. Others, maybe they'd see issue as a liability? IDK.

It is a great question.

 

[NGOT8R]

What about us with BAPs?

Mine was on a JMS BAP when the failure occurred.

 

[Skye]

What about us with BAPs?

FWIW, I'm going to say the BAP will not be a factor if your car is selected for this recall.

If identified for the recall, Ford has determined one of its parts or assembly processes does not meet its specifications. Ford will instruct the Dealer to perform an inspection, code update, pump/module replacement or all three of those things. Ford has a responsibility for that part. Once they are done, they can clear the car and consider the issue closed.

If the pump later becomes part of a problem, with the BAP present, that removes the Dealer and Ford of any liabilities: they accomplished the recall, cleared the car and are not responsible for what the Customer does afterwards. Now, the Dealer and Ford have their Warranty glasses on. With the BAP present, they could, or could not, elect to deal with any later issues.

In the first paragraph, Ford does not have a choice. In the second, they do.

YMMV.

 

[sakman84]

2021 Mach 1 with a blend date of 7/26/2021. On the Ford site it is showing up as one affected by this recall. Bummer, because I don't think that a fuel pump is an easy replace job.

 

[Bob Lob Law]

2021 Mach 1 with a blend date of 7/26/2021. On the Ford site it is showing up as one affected by this recall. Bummer, because I don't think that a fuel pump is an easy replace job.

They don't know what the solution is yet. But, the pump is pretty easy to replace!

 

[MAGS1]

They don't know what the solution is yet. But, the pump is pretty easy to replace!

I’d bet that replacing the fuel pump will be the solution. Just basing that on Skye’s prior post that detailed the issue (post #20).

 

[IPOGT]

I’d bet that replacing the fuel pump will be the solution. Just basing that on Skye’s prior post that detailed the issue (post #20).

Is Ford paying for the tow because there is a “do not drive” advisement.

 

[NGOT8R]

2021 Mach 1 with a blend date of 7/26/2021. On the Ford site it is showing up as one affected by this recall. Bummer, because I don't think that a fuel pump is an easy replace job.

It’s actually pretty easy to do.

 

[Bob Lob Law]

I daily mine, so it'll still be driven! LOL

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