IllustrationTRUCK WILL SHAKE UNCONTROLLABLY AT HIGHWAY SPEEDS. WE HAVE HAD THE FRONT END/DRIVE SHAFT/NEW TIRES/WHEELS EITHER REPLACED OR GONE THROUGH. NOTHING HAS IMPROVED.
2011 Ford F-550
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all F-550 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 10 of 12 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Engine. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel System, Diesel. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel/propulsion System. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
1 crash reports0 fire reports0 injury reports
Steering complaints
1 reportsOfficial recalls
515V052000 · Engine And Engine Cooling:engine
Jan 30, 2015
All Wheel Drive Equipment Mfg., Inc. (All Wheel) is recalling one model year 2011 Ford F-550 truck with a 6.8L gasoline engine manufactured May 14, 2010, to May 28, 2010. The affected vehicle is equipped with a PTO Assembly Pressure Switch, part number FR67, used with power take off (PTO) assemblies for Ford F-550 chassis. The PTO switch may leak oil onto the thermal blanket.
Consequence & remedy
Consequence: The leaking oil may soak into the thermal blanket covering the exhaust, which when combined with heat from exhaust, may result in an increased risk of fire.
Remedy: All Wheel has notified the owner and will install a new pressure switch kit that moves the switch away from the exhaust system, free of charge. Owners may contact All Wheel customer service at 1-800-311-4778.
14V498000 · Equipment
Aug 13, 2014
PJ's Truck Bodies & Equipment Co., (PJ's) is recalling certain 2009-2013 Ford F-350, F-450, and F-550 Super Duty chassis modified by PJ's and equipped with certain Muncie Power Products PTO Assemblies. In the affected vehicles, oil may leak from the PTO pressure switch onto a thermal blanket covering the exhaust.
Consequence & remedy
Consequence: The leaking oil may soak into the thermal blanket covering the exhaust, which when combined with heat from exhaust, may result in an increased risk of fire.
Remedy: PJ's has notified owners and dealers will install a new pressure switch kit that moves the switch away from the exhaust system, free of charge. The recall began on August 28, 2014. Owners may contact PJ's customer service at 1-866-475-8782.
14V411000 · Engine And Engine Cooling:engine:gasoline
Jul 8, 2014
J.C. Madigan, Inc. (J.C. Madigan) is recalling one model year 2011 Ford F-550, and one model year 2013 Ford F-450 chassis with a 6.8L gasoline engine dump trucks equipped with certain PTO Assembly Pressure Switches, part number 30T37594, manufactured June 2009 through June 2013, used in power take off (PTO) assemblies. The switch may begin leaking oil.
Consequence & remedy
Consequence: The leaking oil may soak into the thermal blanket covering the exhaust, which when combined with heat from exhaust, may result in an increased risk of fire.
Remedy: J.C. Madigan will notify owners, and dealers will install a new pressure switch kit that moves the switch away from the exhaust system, free of charge. The recall began in September 2014. Owners may contact J.C. Madigan customer service at 1-978-847-2900.
14V040000 · Fuel System, Other:storage:tank Assembly:mounting
Feb 6, 2014
Almared, Inc., dba A-1 Alternative Fuel Systems, is recalling certain model year 2011-2012 Ford F-550 transit buses manufactured May 2011 through April 2013, altered to operate on compressed natural gas (CNG). In the affected vehicles, the brackets securing the passenger side CNG fuel tank may break.
Consequence & remedy
Consequence: If the brackets break, the CNG tank may separate from the vehicle frame increasing the risk of a crash or possible fire.
Remedy: Almared, Inc. has notified owners and all affected vehicles have been remedied, free of charge. Owners may contact Almared at 1-559-485-4427.
13V535000 · Engine
Oct 30, 2013
Ford Motor Company (Ford) is recalling certain model year 2011-2012 F-350/450/550 Ambulance Package vehicles manufactured February 22, 2010, through October 19, 2012 and equipped with a 6.7L diesel engine. Due to an exhaust sensor problem, the vehicles may experience loss of power followed by an engine stall.
Consequence & remedy
Consequence: An unexpected engine stall increases the risk of a crash. Additionally, if this were to occur when the ambulance is transporting a patient, there is an increased risk of injury to the patient.
Remedy: Ford will notify owners, and dealers will replace the exhaust gas temperature sensor, free of charge. The recall began on November 25, 2013. Owners may contact Ford Motor Company Customer Relationship Center at 1-866-436-7332. Ford's recall campaign number is 13S10.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
2RQ14005 · Vehicle Commanded Engine Shutdown
Opened Jan 13, 2015 · Closed Mar 15, 2016
Status: closed (inferred from source dates) · Electrical System:software; Engine; Engine And Engine Cooling:engine:diesel; Engine And Engine Cooling:exhaust System; Engine And Engine Cooling:exhaust System:emission Control
The Office of Defects Investigation (ODI) opened this RQ to investigate allegations that the scope and remedy of safety recall 13V-535 were inadequate. Recall 13V-535 was limited to a relatively small population of Ambulance Package vehicles and ODI received complaints of pickup trucks and Fire Engine Prep Package vehicles being affected by the same defect. Ford manufactured approximately 555,985 subject vehicles between February 22, 2010 and January 30, 2015 that may be affected by defective EGT sensors and Powertrain Control Module (PCM) software calibration. The subject vehicles are equipped with four (4) EGT sensors to monitor engine operating conditions. An EGT sensor fault may produce false exhaust over-temperature signals. If these signals are produced, the Powertrain Control Module (PCM) implements a Failure Management Effects Mode (FMEM) and the driver receives a Stop Safely Now (SSN) system warning on the instrument cluster message center. The FMEM triggers a 70% reduction in available engine power over a period of no more than 45 seconds, during which it may not be possible to accelerate or maintain vehicle speed. The PCM then commands the engine to shut down when vehicle speed reaches approximately 1 mph. There is no immediate restart capability. Depending on the PCM software calibration, ignition key position and ambient temperature conditions, the engine may not restart until the end of a 10-60 minute cool down period.Ford and its component supplier(s) made numerous changes to the PCM software calibration and the design, material and manufacture of the EGT sensors over the period of subject vehicle production. This continuous product improvement affected vehicle performance regarding the alleged defect. Ford acknowledges the defect condition in the subject vehicles but argues that an unreasonable risk to motor vehicle safety is limited to Ambulance Package and Fire Engine Prep Package vehicles where commanded shutdown could impact emergency response and patient care. Ford also argues that the defect trend is in decline. Ford also initiated a new safety recall (15V-175) to address the 13V-535 remedy concerns in the Ambulance Package vehicles and Fire Engine Prep Package vehicles. The 15V-175 remedy reprograms the PCM with a new software calibration that stops a single EGT sensor fault to cause the vehicle to enter the FMEM shutdown mode.Ford also initiated an EPA emissions recall (14E03) for all subject vehicles that reprograms the PCM with the software calibration employed in safety recall 15V-175. Finally, Ford initiated a Customer Satisfaction Program (15M01) providing extended warranty coverage of 8 years or 80,000 miles for the the EGT sensors on certain MY2011-2012 subject vehicles.Due to the EPA emissions recall, that had a 66.6% completion rate in Ford's December 2015 progress report to the EPA, the defect trend is in decline. ODI is not aware of any crashes, deaths or injuries related to the alleged defect.ODI believes the alleged defect poses a safety risk but notes that the EPA emissions recall is addressing the safety problem.Compelling issuance of a duplicate recall would not represent a wise use of agency resources.Accordingly, this Recall Query is closed.This action is not a finding that no defect exists and NHTSA will take further action if such action is warranted.
Additional source detail variants (5)
Electrical System:software
The Office of Defects Investigation (ODI) opened this RQ to investigate allegations that the scope and remedy of safety recall 13V-535 were inadequate. Recall 13V-535 was limited to a relatively small population of Ambulance Package vehicles and ODI received complaints of pickup trucks and Fire Engine Prep Package vehicles being affected by the same defect. Ford manufactured approximately 555,985 subject vehicles between February 22, 2010 and January 30, 2015 that may be affected by defective EGT sensors and Powertrain Control Module (PCM) software calibration. The subject vehicles are equipped with four (4) EGT sensors to monitor engine operating conditions. An EGT sensor fault may produce false exhaust over-temperature signals. If these signals are produced, the Powertrain Control Module (PCM) implements a Failure Management Effects Mode (FMEM) and the driver receives a Stop Safely Now (SSN) system warning on the instrument cluster message center. The FMEM triggers a 70% reduction in available engine power over a period of no more than 45 seconds, during which it may not be possible to accelerate or maintain vehicle speed. The PCM then commands the engine to shut down when vehicle speed reaches approximately 1 mph. There is no immediate restart capability. Depending on the PCM software calibration, ignition key position and ambient temperature conditions, the engine may not restart until the end of a 10-60 minute cool down period.Ford and its component supplier(s) made numerous changes to the PCM software calibration and the design, material and manufacture of the EGT sensors over the period of subject vehicle production. This continuous product improvement affected vehicle performance regarding the alleged defect. Ford acknowledges the defect condition in the subject vehicles but argues that an unreasonable risk to motor vehicle safety is limited to Ambulance Package and Fire Engine Prep Package vehicles where commanded shutdown could impact emergency response and patient care. Ford also argues that the defect trend is in decline. Ford also initiated a new safety recall (15V-175) to address the 13V-535 remedy concerns in the Ambulance Package vehicles and Fire Engine Prep Package vehicles. The 15V-175 remedy reprograms the PCM with a new software calibration that stops a single EGT sensor fault to cause the vehicle to enter the FMEM shutdown mode.Ford also initiated an EPA emissions recall (14E03) for all subject vehicles that reprograms the PCM with the software calibration employed in safety recall 15V-175. Finally, Ford initiated a Customer Satisfaction Program (15M01) providing extended warranty coverage of 8 years or 80,000 miles for the the EGT sensors on certain MY2011-2012 subject vehicles.Due to the EPA emissions recall, that had a 66.6% completion rate in Ford's December 2015 progress report to the EPA, the defect trend is in decline. ODI is not aware of any crashes, deaths or injuries related to the alleged defect.ODI believes the alleged defect poses a safety risk but notes that the EPA emissions recall is addressing the safety problem.Compelling issuance of a duplicate recall would not represent a wise use of agency resources.Accordingly, this Recall Query is closed.This action is not a finding that no defect exists and NHTSA will take further action if such action is warranted.
Engine And Engine Cooling:engine:diesel
The Office of Defects Investigation (ODI) opened this RQ to investigate allegations that the scope and remedy of safety recall 13V-535 were inadequate. Recall 13V-535 was limited to a relatively small population of Ambulance Package vehicles and ODI received complaints of pickup trucks and Fire Engine Prep Package vehicles being affected by the same defect. Ford manufactured approximately 555,985 subject vehicles between February 22, 2010 and January 30, 2015 that may be affected by defective EGT sensors and Powertrain Control Module (PCM) software calibration. The subject vehicles are equipped with four (4) EGT sensors to monitor engine operating conditions. An EGT sensor fault may produce false exhaust over-temperature signals. If these signals are produced, the Powertrain Control Module (PCM) implements a Failure Management Effects Mode (FMEM) and the driver receives a Stop Safely Now (SSN) system warning on the instrument cluster message center. The FMEM triggers a 70% reduction in available engine power over a period of no more than 45 seconds, during which it may not be possible to accelerate or maintain vehicle speed. The PCM then commands the engine to shut down when vehicle speed reaches approximately 1 mph. There is no immediate restart capability. Depending on the PCM software calibration, ignition key position and ambient temperature conditions, the engine may not restart until the end of a 10-60 minute cool down period.Ford and its component supplier(s) made numerous changes to the PCM software calibration and the design, material and manufacture of the EGT sensors over the period of subject vehicle production. This continuous product improvement affected vehicle performance regarding the alleged defect. Ford acknowledges the defect condition in the subject vehicles but argues that an unreasonable risk to motor vehicle safety is limited to Ambulance Package and Fire Engine Prep Package vehicles where commanded shutdown could impact emergency response and patient care. Ford also argues that the defect trend is in decline. Ford also initiated a new safety recall (15V-175) to address the 13V-535 remedy concerns in the Ambulance Package vehicles and Fire Engine Prep Package vehicles. The 15V-175 remedy reprograms the PCM with a new software calibration that stops a single EGT sensor fault to cause the vehicle to enter the FMEM shutdown mode.Ford also initiated an EPA emissions recall (14E03) for all subject vehicles that reprograms the PCM with the software calibration employed in safety recall 15V-175. Finally, Ford initiated a Customer Satisfaction Program (15M01) providing extended warranty coverage of 8 years or 80,000 miles for the the EGT sensors on certain MY2011-2012 subject vehicles.Due to the EPA emissions recall, that had a 66.6% completion rate in Ford's December 2015 progress report to the EPA, the defect trend is in decline. ODI is not aware of any crashes, deaths or injuries related to the alleged defect.ODI believes the alleged defect poses a safety risk but notes that the EPA emissions recall is addressing the safety problem.Compelling issuance of a duplicate recall would not represent a wise use of agency resources.Accordingly, this Recall Query is closed.This action is not a finding that no defect exists and NHTSA will take further action if such action is warranted.
Engine And Engine Cooling:exhaust System:emission Control
The Office of Defects Investigation (ODI) opened this RQ to investigate allegations that the scope and remedy of safety recall 13V-535 were inadequate. Recall 13V-535 was limited to a relatively small population of Ambulance Package vehicles and ODI received complaints of pickup trucks and Fire Engine Prep Package vehicles being affected by the same defect. Ford manufactured approximately 555,985 subject vehicles between February 22, 2010 and January 30, 2015 that may be affected by defective EGT sensors and Powertrain Control Module (PCM) software calibration. The subject vehicles are equipped with four (4) EGT sensors to monitor engine operating conditions. An EGT sensor fault may produce false exhaust over-temperature signals. If these signals are produced, the Powertrain Control Module (PCM) implements a Failure Management Effects Mode (FMEM) and the driver receives a Stop Safely Now (SSN) system warning on the instrument cluster message center. The FMEM triggers a 70% reduction in available engine power over a period of no more than 45 seconds, during which it may not be possible to accelerate or maintain vehicle speed. The PCM then commands the engine to shut down when vehicle speed reaches approximately 1 mph. There is no immediate restart capability. Depending on the PCM software calibration, ignition key position and ambient temperature conditions, the engine may not restart until the end of a 10-60 minute cool down period.Ford and its component supplier(s) made numerous changes to the PCM software calibration and the design, material and manufacture of the EGT sensors over the period of subject vehicle production. This continuous product improvement affected vehicle performance regarding the alleged defect. Ford acknowledges the defect condition in the subject vehicles but argues that an unreasonable risk to motor vehicle safety is limited to Ambulance Package and Fire Engine Prep Package vehicles where commanded shutdown could impact emergency response and patient care. Ford also argues that the defect trend is in decline. Ford also initiated a new safety recall (15V-175) to address the 13V-535 remedy concerns in the Ambulance Package vehicles and Fire Engine Prep Package vehicles. The 15V-175 remedy reprograms the PCM with a new software calibration that stops a single EGT sensor fault to cause the vehicle to enter the FMEM shutdown mode.Ford also initiated an EPA emissions recall (14E03) for all subject vehicles that reprograms the PCM with the software calibration employed in safety recall 15V-175. Finally, Ford initiated a Customer Satisfaction Program (15M01) providing extended warranty coverage of 8 years or 80,000 miles for the the EGT sensors on certain MY2011-2012 subject vehicles.Due to the EPA emissions recall, that had a 66.6% completion rate in Ford's December 2015 progress report to the EPA, the defect trend is in decline. ODI is not aware of any crashes, deaths or injuries related to the alleged defect.ODI believes the alleged defect poses a safety risk but notes that the EPA emissions recall is addressing the safety problem.Compelling issuance of a duplicate recall would not represent a wise use of agency resources.Accordingly, this Recall Query is closed.This action is not a finding that no defect exists and NHTSA will take further action if such action is warranted.
Engine And Engine Cooling:exhaust System
The Office of Defects Investigation (ODI) opened this RQ to investigate allegations that the scope and remedy of safety recall 13V-535 were inadequate. Recall 13V-535 was limited to a relatively small population of Ambulance Package vehicles and ODI received complaints of pickup trucks and Fire Engine Prep Package vehicles being affected by the same defect. Ford manufactured approximately 555,985 subject vehicles between February 22, 2010 and January 30, 2015 that may be affected by defective EGT sensors and Powertrain Control Module (PCM) software calibration. The subject vehicles are equipped with four (4) EGT sensors to monitor engine operating conditions. An EGT sensor fault may produce false exhaust over-temperature signals. If these signals are produced, the Powertrain Control Module (PCM) implements a Failure Management Effects Mode (FMEM) and the driver receives a Stop Safely Now (SSN) system warning on the instrument cluster message center. The FMEM triggers a 70% reduction in available engine power over a period of no more than 45 seconds, during which it may not be possible to accelerate or maintain vehicle speed. The PCM then commands the engine to shut down when vehicle speed reaches approximately 1 mph. There is no immediate restart capability. Depending on the PCM software calibration, ignition key position and ambient temperature conditions, the engine may not restart until the end of a 10-60 minute cool down period.Ford and its component supplier(s) made numerous changes to the PCM software calibration and the design, material and manufacture of the EGT sensors over the period of subject vehicle production. This continuous product improvement affected vehicle performance regarding the alleged defect. Ford acknowledges the defect condition in the subject vehicles but argues that an unreasonable risk to motor vehicle safety is limited to Ambulance Package and Fire Engine Prep Package vehicles where commanded shutdown could impact emergency response and patient care. Ford also argues that the defect trend is in decline. Ford also initiated a new safety recall (15V-175) to address the 13V-535 remedy concerns in the Ambulance Package vehicles and Fire Engine Prep Package vehicles. The 15V-175 remedy reprograms the PCM with a new software calibration that stops a single EGT sensor fault to cause the vehicle to enter the FMEM shutdown mode.Ford also initiated an EPA emissions recall (14E03) for all subject vehicles that reprograms the PCM with the software calibration employed in safety recall 15V-175. Finally, Ford initiated a Customer Satisfaction Program (15M01) providing extended warranty coverage of 8 years or 80,000 miles for the the EGT sensors on certain MY2011-2012 subject vehicles.Due to the EPA emissions recall, that had a 66.6% completion rate in Ford's December 2015 progress report to the EPA, the defect trend is in decline. ODI is not aware of any crashes, deaths or injuries related to the alleged defect.ODI believes the alleged defect poses a safety risk but notes that the EPA emissions recall is addressing the safety problem.Compelling issuance of a duplicate recall would not represent a wise use of agency resources.Accordingly, this Recall Query is closed.This action is not a finding that no defect exists and NHTSA will take further action if such action is warranted.
Engine
The Office of Defects Investigation (ODI) opened this RQ to investigate allegations that the scope and remedy of safety recall 13V-535 were inadequate. Recall 13V-535 was limited to a relatively small population of Ambulance Package vehicles and ODI received complaints of pickup trucks and Fire Engine Prep Package vehicles being affected by the same defect. Ford manufactured approximately 555,985 subject vehicles between February 22, 2010 and January 30, 2015 that may be affected by defective EGT sensors and Powertrain Control Module (PCM) software calibration. The subject vehicles are equipped with four (4) EGT sensors to monitor engine operating conditions. An EGT sensor fault may produce false exhaust over-temperature signals. If these signals are produced, the Powertrain Control Module (PCM) implements a Failure Management Effects Mode (FMEM) and the driver receives a Stop Safely Now (SSN) system warning on the instrument cluster message center. The FMEM triggers a 70% reduction in available engine power over a period of no more than 45 seconds, during which it may not be possible to accelerate or maintain vehicle speed. The PCM then commands the engine to shut down when vehicle speed reaches approximately 1 mph. There is no immediate restart capability. Depending on the PCM software calibration, ignition key position and ambient temperature conditions, the engine may not restart until the end of a 10-60 minute cool down period.Ford and its component supplier(s) made numerous changes to the PCM software calibration and the design, material and manufacture of the EGT sensors over the period of subject vehicle production. This continuous product improvement affected vehicle performance regarding the alleged defect. Ford acknowledges the defect condition in the subject vehicles but argues that an unreasonable risk to motor vehicle safety is limited to Ambulance Package and Fire Engine Prep Package vehicles where commanded shutdown could impact emergency response and patient care. Ford also argues that the defect trend is in decline. Ford also initiated a new safety recall (15V-175) to address the 13V-535 remedy concerns in the Ambulance Package vehicles and Fire Engine Prep Package vehicles. The 15V-175 remedy reprograms the PCM with a new software calibration that stops a single EGT sensor fault to cause the vehicle to enter the FMEM shutdown mode.Ford also initiated an EPA emissions recall (14E03) for all subject vehicles that reprograms the PCM with the software calibration employed in safety recall 15V-175. Finally, Ford initiated a Customer Satisfaction Program (15M01) providing extended warranty coverage of 8 years or 80,000 miles for the the EGT sensors on certain MY2011-2012 subject vehicles.Due to the EPA emissions recall, that had a 66.6% completion rate in Ford's December 2015 progress report to the EPA, the defect trend is in decline. ODI is not aware of any crashes, deaths or injuries related to the alleged defect.ODI believes the alleged defect poses a safety risk but notes that the EPA emissions recall is addressing the safety problem.Compelling issuance of a duplicate recall would not represent a wise use of agency resources.Accordingly, this Recall Query is closed.This action is not a finding that no defect exists and NHTSA will take further action if such action is warranted.
PE13038 · Cng Fuel Container Securement
Opened Nov 15, 2013 · Closed Mar 9, 2014
Status: closed (inferred from source dates) · Fuel System, Other:storage; Fuel System, Other:storage:tank Assembly:mounting
The Office of Defects Investigation (ODI) is aware of 1 incident related to the alleged defect. By letter dated January 10, 2014, Almared, Inc. (doing business as A-1 Alternative Fuel Systems) has notified ODI that it has conducted a safety recall (NHTSA Recall No. 14V-040) to address a safety defect in 18 model year 2011-2012 Ford F-550 transit buses manufactured between May 2011 and April 2013. These vehicles have been altered by A-1 to contain one or more compressed natural gas (CNG) fuel containers. According to A-1, the brackets securing passenger side CNG fuel containers to the vehicle chassis may fracture, resulting in a CNG fuel container that is unsecured. A-1 has reportedly inspected all 18 affected vehicles and repaired all vehicles equipped with the defective mounting bracket by installing a new bracket of an improved design. The new bracket has added strength as a result of the following design revisions: the cantilevered mounting plate is reinforced with additional support plates, the cantilevered position is mounted higher on the bracket above the CNG fuel container center line position (thus reducing the moment arm), and it is constructed of heavier gauge steel plate that is also dimensionally wider, which provides for a greater bonding surface area with the vehicle chassis.Based on the recall action taken by Almared, Inc., this investigation is closed.
Additional source detail variants (2)
Fuel System, Other:storage
The Office of Defects Investigation (ODI) is aware of 1 incident related to the alleged defect. By letter dated January 10, 2014, Almared, Inc. (doing business as A-1 Alternative Fuel Systems) has notified ODI that it has conducted a safety recall (NHTSA Recall No. 14V-040) to address a safety defect in 18 model year 2011-2012 Ford F-550 transit buses manufactured between May 2011 and April 2013. These vehicles have been altered by A-1 to contain one or more compressed natural gas (CNG) fuel containers. According to A-1, the brackets securing passenger side CNG fuel containers to the vehicle chassis may fracture, resulting in a CNG fuel container that is unsecured. A-1 has reportedly inspected all 18 affected vehicles and repaired all vehicles equipped with the defective mounting bracket by installing a new bracket of an improved design. The new bracket has added strength as a result of the following design revisions: the cantilevered mounting plate is reinforced with additional support plates, the cantilevered position is mounted higher on the bracket above the CNG fuel container center line position (thus reducing the moment arm), and it is constructed of heavier gauge steel plate that is also dimensionally wider, which provides for a greater bonding surface area with the vehicle chassis.Based on the recall action taken by Almared, Inc., this investigation is closed.
Fuel System, Other:storage:tank Assembly:mounting
The Office of Defects Investigation (ODI) is aware of 1 incident related to the alleged defect. By letter dated January 10, 2014, Almared, Inc. (doing business as A-1 Alternative Fuel Systems) has notified ODI that it has conducted a safety recall (NHTSA Recall No. 14V-040) to address a safety defect in 18 model year 2011-2012 Ford F-550 transit buses manufactured between May 2011 and April 2013. These vehicles have been altered by A-1 to contain one or more compressed natural gas (CNG) fuel containers. According to A-1, the brackets securing passenger side CNG fuel containers to the vehicle chassis may fracture, resulting in a CNG fuel container that is unsecured. A-1 has reportedly inspected all 18 affected vehicles and repaired all vehicles equipped with the defective mounting bracket by installing a new bracket of an improved design. The new bracket has added strength as a result of the following design revisions: the cantilevered mounting plate is reinforced with additional support plates, the cantilevered position is mounted higher on the bracket above the CNG fuel container center line position (thus reducing the moment arm), and it is constructed of heavier gauge steel plate that is also dimensionally wider, which provides for a greater bonding surface area with the vehicle chassis.Based on the recall action taken by Almared, Inc., this investigation is closed.