Tag Archives: fuel pump failure

VW & Audi – Fuel Tank Suction Pump Failure

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Volkswagen Group of America, Inc. (Volkswagen) will be contacting the owners of certain front-wheel drive Volkswagen and Audi vehicles because the suction jet pump seal inside the fuel tank could fail. This failure could allow fuel to flow into the evaporative emissions (EVAP) system and possibly leak out of the charcoal canister.

The problems started in August 2016 when Volkswagen determined there was a defect affecting vehicles built with a specific suction jet pump. A Recall (16V-647) was issued and the affected vehicles received an improved version (Version 1.1) of suction jet pump.

In April 2018 Volkswagen started to receive their first reports of suction jet pump failures and an investigation was started. During an analysis of these warranty claims and customer complaints (VOQ’s), the evaluation of the field performance of the improved version of the suction jet pump indicated an increased failure rate. The topic was discussed at the Product Safety Committee’s of Volkswagen and Audi and a recall for all front wheel drive vehicles that have been equipped with the improved version was decided (based on 1410 warranty claims on FWD vehicles with repair dates between 05/01/2016 and 12/31/2023)

The vehicles affected include:
2015-2020 Audi A3 Sedan
2015-2019 Audi A3 Cabriolet
2019-2020 Volkswagen Jetta GLI
2018 Volkswagen Golf Sportwagen GP
2018-2019 Volkswagen Golf Sportwagen A7
2015-2017 Volkswagen Golf Sportwagen
2015-2020 Volkswagen Golf GTI
2015-2020 Volkswagen Golf A7

The recall remedy component is a redesigned suction jet pump (Version 2.0) and has incorporated multiple changes/improvements. The remedy part has the part number 5Q0.201.029 A, the recalled part has the part number 5Q0.201.029.

Owners receiving notices will be instructed to return to their dealers to have the suction pump replaced. Volkswagen’s numbers for this recall are VW: 20UF/Audi: 20YF. The NHTSA campaign number is 24V-110. Vehicles that were previously recalled under 16V-647 will need to have the new remedy completed.

Loss Of Drive Power From Fuel Pump Failure

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Hyundai is taking action to address a fuel pump issue in certain 2021-2022 Genesis vehicles. This problem came to Hyundai’s attention in September 2022 when they received their first warranty claim related to a 2022 Genesis GV70 vehicle experiencing a stall / hesitation problem. As more warranty claims started pouring in, Hyundai launched an investigation to pinpoint the root cause of the issue.

The vehicles affected include:

  • 2021-2022 Genesis G80
  • 2022 Genesis GV70
  • 2021-2022 Genesis GV80

In June 2023, Hyundai successfully replicated the problem. Their investigation, which included a dimensional tolerance CT scan, revealed a potential problem: interference between the impeller (a key component of the fuel pump) and its housing, causing an obstruction. Hyundai collaborated with the supplier and identified a specific production lot of fuel pump assemblies that lacked sufficient impeller material. This issue potentially affected vehicles manufactured between June 2021 and December 2021. Consequently, Hyundai made the decision to initiate a recall.

The issue lies with the low-pressure fuel pump assemblies in these vehicles. Some of these assemblies may contain impellers that do not meet the required material specifications, which can lead to deformations. This deformation can result in the impeller interfering with the fuel pump housing, creating mechanical resistance that can cause the fuel pump to shut down.

A fuel pump shutdown can severely restrict the flow of fuel to the engine, potentially causing a sudden reduction or complete loss of power while driving. This poses an increased risk of accidents.

As of the latest available data up to August 22, 2023, Hyundai has received reports of 879 unique incidents related to this defect condition in the United States, spanning from July 1, 2021. Fortunately, there have been no confirmed crashes, fires, or injuries linked to this fuel pump issue.

To rectify the problem, authorized Hyundai dealers will replace the affected fuel pumps. The recall associated with this issue is identified by Hyundai as number 016G, and it has been assigned the NHTSA campaign number 23V-630. Additionally, the NHTSA has designated a specific campaign number for the fuel pump recall, which is 23E-068.

In summary, Hyundai is addressing a fuel pump problem in certain 2021-2022 Genesis vehicles to ensure the safety and reliability of these vehicles on the road. If you own one of these vehicles, it is important to receive the necessary replacement to avoid potential issues related to the fuel pump.

Chevy Equinox & GMC Terrain Engine Stalls From Fuel Starvation

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General Motors (GM) have decided that a defect affecting safety exists in certain 2021-2022 Chevrolet Equinox and 2022 GMC Terrain vehicles. They opened an investigation into the problem in August 2022 after noticing a high rate of warranty returns for the fuel tank pump on some 2021-2022 model year Equinox and Terrain vehicles.

GM’s investigation analyzed field data, defective returned components, and conducted an inspection of the tier two supplier’s facility and manufacturing processes. During this investigation, GM found that the supplier’sf manufacturing team made an unauthorized change in the fuel tank pump rolling force in May 2021 and that this error was discovered and corrected by the supplier’s engineering team on June 2021. GM conducted an analysis of field data relating to claims GM received between May 22, 2021, and December 15, 2022, and identified 710 stall events potentially related to the recall condition.

According to the defect report, during a specific production period between May 2, 2021, and June 1, 2021, a tier-two supplier implemented an unauthorized change to the fuel pump in the manufacturing process which decreased the pump section clearances. This resulted in the potential for insufficient fuel flow to the engine. If the fuel pump module does not consistently provide sufficient fuel to the engine, the vehicle may stall.

Drivers may notice an illuminated check engine light or experience engine hesitation. If the vehicles stalls, it could be difficult to restart.

Owners receiving notices will be asked to return to their dealers to have the fuel pump module replaced in their vehicles. GM’s number for this recall is N222372310 and the NHTSA campaign number is 23V-013.

Fuel Pump Failure
Jeep Grand Cherokee And Ram 1500

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Certain 2014-2020 Jeep Grand Cherokee and 2014-2019 Ram 1500 vehicles equipped with 3.0L diesel engines, could experience high-pressure fuel pump failure. If the pump fails while the vehicle is being operated, drivers will experience an unexpected loss of engine power and an increased chance of an accident.

In February 2022, Fiat Chrysler Automobiles (FCA) Technical Safety and Regulatory Compliance (TSRC) organization started an investigation into Jeep Grand Cherokee and Ram 1500 trucks, after receiving field reports that the fuel pump in some vehicles were prematurely failing. An investigation of the stall patterns and vehicle histories showed that the affected trucks were equipped with Bosch CP4.2 high-pressure fuel pumps (HPFP).

According to the defect report, a failure inside the fuel pump could introduce internal debris that could build up and cause fuel starvation. Fuel starvation may result in an unexpected loss of motive power, which could contribute to a vehicle to crash. The suspect period began on June 12, 2013, when 3.0L Diesel engines with suspect HPFPs were introduced into vehicle production, and ended on December 13, 2019, when 3.0L Diesel engines with suspect HPFPs were no longer used in vehicle production.

Warning signs that your vehicle may be experiencing this problem include: Drivers may notice a Malfunction Indicator Lamp, a service Electronic Throttle Control indicator, a fuel leak at the HPFP, or excessive noise from the HPFP.

FCA US is aware of 215 customer assistance records, 1,061 warranty claims, and three field reports that could be related to this issue.

Owners receiving notices will be asked to return to their dealers to have the HPFP replaced. Dealers will also inspect the entire fuel system and replace components as necessary. FCA’s number for this recall is Z46 and the NHTSA campaign number is 22V-406.

2021 Nissan Rogue Fuel Pump Failure

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Nissan North America, Inc. (Nissan) will be asking the owners of certain 2021 Nissan Rogue SUVs to return to their dealerships to fix a problem affecting the fuel system in their vehicles. An assembly defect in the fuel pump could lead to an unexpected vehicle stall.

The problem began in March 2021, when Nissan first received a field report about a 2021 Rogue SUV crossover that allegedly experienced a fuel pump failure. According to the driver of the vehicle, the Malfunction Indicator Lamp (MIL) illuminated just before the engine stalled. The driver was not able to restart the vehicle and needed to have it towed. Nissan initiated an investigation into the problem and collected parts from the field to perform duplication testing to identify the scope of the issue. The supplier also conducted a field investigation and process check in an attempt to track down the problem.

Nissan discussed the ongoing investigation with the NHTSA and reviewed their field claims checks for the U.S. Market and identified 87 warranty claims alleging the same problem… engine stalls while driving. Based on manufacturer production records the problem affects certain model year 2021 Nissan Rogue vehicles manufactured between March 2021 and October 2021. No other Nissan or Infiniti vehicles have been affected.

According to the defect report, the problem is the result of an operator assembly error at the supplier. Some fuel pumps may experience excessive friction between the fuel pump brush and commutator. This will cause heat and melting damage that would result in the fuel pump failing. If the fuel pump fails, it will cause the engine to stall and not restart.

Owners receiving notices will be asked to return to their dealers to have the fuel pump assembly replaced. Nissan’s number for this recall is R21B8 and the NHTSA campaign number is 21V-957.

Chrysler, Alfa Romeo And RAM Fuel System Failure

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Chrysler (FCA US, LLC) will be contacting owners of certain Chrysler, Alfa Romeo, and RAM vehicles for a problem affecting the fuel system. In total, approximately 236 000 vehicles are being recalled.

2020-2021 Alfa Romeo Stelvio and Alfa Romeo Giulia vehicles fuel line sensor housing may crack and leak fuel. NHTSA Campaign Number: 21V-878

The problem was traced to September 11, 2020, when defective fuel sensors were introduced into vehicle production, and ended on May 25, 2021, when the fuel sensors from the suspect batches were no longer used. The suspect population was determined using part traceability and vehicle production records.

According to the defect report, a leak in the fuel line sensor may cause fuel starvation of the engine and in rare circumstances, if the leaked fuel comes in contact with an ignition source, a fire could occur. A vehicle fire can result in an increased risk of occupant injury and/or injury to persons outside the vehicle, as well as property damage. Fuel starvation could also result in an unexpected loss of motive power.

2019 Fiat 124 Spider fuel pump failure may cause an engine stall. NHTSA Campaign Number: 21V-879

The suspect period began on April 6, 2018, when the defective fuel delivery module (FDMs) were introduced into vehicle production, and ended on October 18, 2018, when FDMs with improved molding of the impellers were implemented in vehicle production.

Some 2019 Fiat 124 Spider vehicles may have been manufactured with a fuel delivery module (FDM) with impellers that could deform. An FDM with a deformed impeller may interfere with other fuel pump components which can inhibit the operation of the fuel pump potentially causing fuel starvation. : Fuel starvation may result in an unexpected loss of motive power.

2019-2020 RAM 2500, 3500, 4500, and 5500 diesel trucks fuel pump failure may cause an engine stall. NHTSA Campaign Number: 21V-880

The suspect period began on October 11, 2018, when Cummins 6.7L Turbo Diesel engines with suspect HPFPs were introduced into vehicle production, and ended on November 13, 2020, when Cummins 6.7L Turbo Diesel engines with suspect HPFPs were no longer used in vehicle production.

According to the defect report, the high-pressure fuel pump could fail and introduce debris into the fuel system. Fuel starvation and an unexpected loss of motive power could result without prior warning. Vehicle occupants may notice an illuminated Malfunction Indicator Lamp, a fuel leak or smell, abnormal engine noises, or a change in drive quality.

Mazda Engine Stall From Fuel Pump Failure

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Mazda is recalling certain 2018-2020 vehicles because the impeller inside the low-pressure fuel pump may crack and deform, potentially causing the fuel pump to fail.

In March 2019 Mazda received the first field report of an engine stall due to an inoperative fuel pump. A study of the pump showed that cracking on the impeller surface made the impeller more likely to deform. Further investigation found that solvent used during the manufacturing process and low-density impellers may be factors causing impeller cracking. During the test, the surface of the impeller cracked as the solvent dried over time. It was confirmed that fuel pumps produced with impellers of lower density exposed to production drying solvent for longer periods of time could experience the impeller cracking at a level that could lead to excessive fuel absorption, and could cause impeller deformation.

The Vehicles Affected Include:
2019 Mazda CX-3
2018-2019 Mazda CX-5
2018-2019 Mazda CX-9
2019-2020 Mazda Mazda2
2018 Mazda Mazda3
2018 Mazda Mazda6
2018-2019 Mazda MX-5

Fuel pump failure may result in engine no start and/or vehicle stall while driving at low speed and, in rare instances, a vehicle stall could occur while driving at higher speeds, increasing the risk of a crash. Drivers may notice this defect by a check engine light, and/or rough engine operation.

Mazda will be contacting owners of affected vehicles with instructions to return to their dealers to have the fuel pump replaced. Mazda’s number for this recall is 5321K and the NHTSA campaign number is 21V-875.

RAM Trucks Fuel Pump Failure Investigation

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The NHTSA Office of Defects Investigation (ODI) have opened up an investigation into certain 2019-2020 RAM trucks after receiving 22 complaints and 2 field reports alleging incidents of stalling and loss of engine power. The vehicles affected are equipped with 6.7L Cummins turbo diesel engines. According to the investigation report, the complaints found that most stall/loss of motive power incident allegations occurred at speeds above 25 MPH and resulted in permanent disablement of the vehicle.

The Vehicles Affected Include:
2019-2020 Ram 2500
2019-2020 Ram 3500
2019-2020 Ram 4500
2019-2020 Ram 5500

In November 2019, FCA issued Warranty Bulletin D-19-02 to announce to its dealers a Fast Feedback Program wherein they were notified of a campaign to collect, monitor, and correct quality issues on certain 2018-2020 Ram trucks equipped with the 6.7L Cummins engine. As a result of this campaign, high-pressure fuel pumps have been collected and inspected by the manufacturer and pump manufacturer.

ODI is opening this investigation to further assess the scope, frequency, root cause, and potential safety-related consequences of the alleged defect leading to stall/loss of motive power on 2019-2020MY RAM heavy-duty trucks.