Tag Archives: unexpected engine stall

2019-2020 Toyota Yaris Fuel Pump Failure And Engine Stall

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Toyota will be asking the owners of certain 2019-2020 Toyota Yaris vehicles to return to their dealerships for a problem that could lead to fuel pump failure and an engine stall.

Last year Mazda, which is responsible for the vehicle’s design and manufacturing, started an investigation into Mazda and Toyota vehicles experiencing fuel pump failures. Based on the recovered parts and other investigations, Mazda reported that the fuel pumps in the subject vehicles were affected by exposure to high environmental temperatures.

According to the defect report, these vehicles are manufactured with low pressure fuel pumps with low density impellers. These impellers were exposed to production solvent drying for longer periods of time which make them more susceptible to fuel absorption, impeller deformation and impeller cracking. In some cases, the impeller could deform to a point that creates enough interference with the fuel pump body to cause the fuel pump to stop operating. An inoperative fuel pump will result in an illuminated check engine light, master warning indicators, rough engine running and an engine no start and/or vehicle stall while driving.

Toyota will be contacting owners of affected vehicles with instructions to return to their dealerships to have the low pressure fuel pump assembly replaced. Toyota’s numbers for this recall are 21TB05 and 21TA05. The NHTSA campaign number is 21V-617.

Nissan Armada & Infiniti QX80 Engine Stall

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Owners of certain 2020-2021 Nissan Armada and 2020-2021 Infiniti QX80 SUVs equipped with V8 engines could experience a fuel system problem that could result in an unexpected engine stall. Nissan learned of a potential issue on these vehicles in June 2020 and initiated an investigation which has lead to the recall of approximately 24,000 vehicles.

According to the defect report, the fuel pump module was not designed to manufacturer specifications and could fail. During the impeller manufacturing process, a buildup of molten plastic on the injection moulding machine cylinder tip could cause the density of the impeller to be out of specification. Fuel inside the fuel pump can cause the impeller to swell, increasing friction between the impeller and inlet cover. Eventually the fuel pump will bind internally and the engine will stall.

Owners receiving notices will be asked to return to the dealers to have the fuel pump module replaced. Nissan’s number for this recall is R21A2, Infiniti’s number for this recall is R21A3 and the NHTSA campaign number is 21V-373.

2021 Infiniti Q50 And Q60 Engine Stall

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In February, Nissan initiated an investigation into reports of an illuminated Malfunction Indicator Lamp (MIL), reduced power and engine stalling in some 2021 Infiniti Q50 And Q60 vehicles. This investigation has resulted in a recall affecting approximately 13,000 vehicles.

According to the defect report, the engine control module (EMC)in the subject vehicles has a software function that prevents unintended acceleration based on monitoring torque input. A problem was found with the EMC software which prevented it from correctly reducing engine speed after an excessive torque detection. As a result, the vehicle would go into limp mode, reducing engine power, illuminating the MIL and eventually stalling. Nissan has received one report of an accident without injuries potentially related to this issue.

Infiniti will be notifying owners to return to their dealerships to get the ECM software reprogrammed. Infiniti’s number for this recall is R20C5 and the NHTSA campaign number is 21V-234.

Engine Stall From Insufficient Fuel Supply

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General Motors will be asking the owners of certain 2020 GM automobiles to return to their dealerships to fix a problem affecting the fuel supply system in their vehicles. The vehicles affected include 2020 Buick Enclave, Cadillac XT5, Cadillac XT6, Chevrolet Traverse and GMC Acadia.

According to the defect report, the fuel pump assemblies in these vehicles may have been produced with burrs inside the mixing tube. Over time, these burrs could prevent the transfer of fuel from the secondary side of the fuel tank to the primary side. At low fuel levels, the engine may not receive enough fuel and the engine could stall unexpectedly. A stall without warning, especially at high speeds, could increase the risk of an accident.

Dealers will correct the problem by replacing the fuel pump module. GM’s number for this recall is N202314760 and the NHTSA campaign number is 20V-639.

2019 Subaru Stalls And Won’t Start

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Subaru will be contacting the owners of certain 2019 model cars and SUVs because of a problem affecting the fuel system in their vehicles.

According to the defect report, the fuel pump in these vehicles may have an impeller that was manufactured with a density that does not meet the manufacturer standards. If the impeller is exposed to solvent drying for extended periods of time, it could develop cracks that would lead to excessive fuel absorption. Over time the impeller could deform and interfere with the body of the fuel pump. If the fuel pump stops working, the check engine warning will illuminate, the engine will run roughly and could stall without the ability to restart.

Vehicles Affected
2019 Subaru Ascent
2019 Subaru Impreza
2019 Subaru Legacy
2019 Subaru Outback

Dealers will correct the problem by replacing the low pressure fuel pump. Subaru’s number for this recall is WRD-20 and the NHTSA campaign number is 20V-218.

2020 Toyota Highlander Engine Stall

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Toyota will be contacting the owners of certain 2020 Highlander vehicles equipped with 3.5 L, V6 (2GR-FKS) gasoline engines that contain the Stop & Start Engine System that monitors your brake pedal operation to stop your engine when the vehicle is stopped.

The vehicles involved contain an engine control unit (ECU) programming error that may not correctly supply fuel to the engine when this feature is activated. The problem could result in an unexpected stall followed by an audible chime and multiple warnings indicating the engine has stalled.

Dealers will correct the problem by reprogramming the ECU. Toyota’s number for this recall is 20TA06 and the NHTSA campaign number is 20V162.

Click here to view the complete 2020 Toyota Highlander recall notice.

2012-2018 Ford Focus – Inaccurate Fuel Gauge Indication

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Ford will be contacting the owners of certain 2012-2018 Focus 2.0L GDI and 2.0L GTDI vehicles for a problem affecting the fuel system. According to the defect report, the power-train control module may not detect a malfunctioning Canister Purge Valve (CPV) stuck in the open position. Excessive vacuum in the fuel vapor management system could deform the the fuel tank, giving inaccurate fuel gauge readings and drivability problems.

Note: Owners are advised to keep the fuel tank at least halfway full until the vehicle has been serviced.

Dealers will correct the problem by reprogramming the Powertrain Control Module. They will also check for fault codes and replace the CPV, the carbon canister, fuel tank and fuel delivery module as necessary. Ford’s number for this recall is 18S32 and the NHTSA campaign number is 18V-735.

2018 Toyota Camry Engine Runs Rough

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Toyota will be contacting the owners of certain 2018 Toyota Camry cars regarding a problem affecting the engine and its cooling. The subject vehicles are equipped with 2.5L, 4 cylinder A25A-FKS engines.

According to the defect report, a manufacturing error has resulted in pistons being produced with a diameter larger than specified. Engines assembled with these pistons may cause the vehicle to run rough, create an abnormal sound, emit smoke from the exhaust, and/or illuminate an engine warning light. Drivers may notice a reduction in power and a stalling engine.

Toyota will ask owners to return to their dealers to have the production date codes of the pistons checked and replaced as necessary. Owners wanting more information can contact Toyota customer service at 1-888-270-9371. Toyota’s number for this recall is J1M/J0M and the NHTSA campaign number is 18V-200.