NHTSA Investigation
PE08063
CNG REGULATOR LEAK
Key Takeaways
- Investigation PE08063 currently maps to 2 tracked vehicle-year pages across 1 make.
- This page summarizes the public investigation subject, status, timing, and affected tracked vehicles linked from NHTSA source data.
- The linked component on this record is fuel system, other:delivery.
What This Investigation Page Shows
This page summarizes a public NHTSA investigation record tied to one or more tracked vehicle-year pages in our database. Investigation records sit between owner complaints and recall campaigns: they can remain open, close without a recall, or connect to a later remedy action. Use this page to see which tracked vehicles are linked to the record, then open the individual vehicle pages for complaints, recalls, and crash test context.
Investigation Summary
THE AGENCY HAS CLOSED THIS INVESTIGATION BASED ON ITS REVIEW OF COMPLAINT REPORTS, DISCUSSIONS WITH COMPLAINANTS AND FIELD AND TECHNICAL DATA PROVIDED BY FORD.THE SUBJECT VEHICLES ARE 1/2 TON PICKUP TRUCKS AND ARE NATURAL GAS VEHICLES (NGV) THAT ARE FUELED BY GASOLINE OR COMPRESSED NATURAL GAS.THE AGENCY HAS RECEIVED REPORTS ALLEGING IMPROPER OPERATION OF THE NATURAL GAS FUEL PRESSURE REGULATOR ALLOWING RELEASE OF EXCESS AMOUNTS OF NATURAL GAS INTO THE ENGINE COMPARTMENT.FORD REPORTS THAT THE REGULATOR CONTAINS AN OVER PRESSURE RELIEF VALVE THAT WILL VENT NATURAL GAS SHOULD THE PRESSURE EXCEED A SET THRESHOLD.THE COMPLAINT REPORTS AND DATA REVIEWED BY THE AGENCY INDICATE THAT AN IMPROPERLY OPERATING PRESSURE REGULATOR CAN RESULT IN AN OVERPRESSURE CONDITION AND ACTIVATE THE REGULATOR PRESSURE RELIEF VALVE.THE RELEASED NATURAL GAS IS DIRECTED THROUGH A VENT HOSE THAT DISCHARGES THE NATURAL GAS IN THE VICINITY OF THE RIGHT FRONT WHEEL HOUSE AND AWAY FROM THE ENGINE COMPARTMENT'S EXTREMELY HOT AREAS/SURFACES.OWNERS ARE NORMALLY AWARE OF THIS PROBLEM BY THE PRESENCE OF AN ILLUMINATED WARNING LIGHT INSIDE THE VEHICLE, ODOR OF NATURAL GAS OR THE SOUND OF VENTING GAS.WHEN THE OPERATOR TURNS THE ENGINE OFF, THE NATURAL GAS SUPPLY TANK SOLENOID WILL CLOSE AND THE REGULATOR WILL NOT RELEASE NATURAL GAS.AT VEHICLE RESTART, THE SOLENOID VALVE WILL REMAIN CLOSED TO PREVENT LEAKAGE AND THE VEHICLE WILL ONLY OPERATE IN THE GASOLINE MODE.A SAFETY-RELATED DEFECT HAS NOT BEEN IDENTIFIED AT THIS TIME AND FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT A SAFETY-RELATED DEFECT DOES NOT EXIST.THE AGENCY WILL MONITOR THIS ISSUE AND RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.
Manufacturer listed on the source record: Ford Motor Company
Component listed on the source record: FUEL SYSTEM, OTHER:DELIVERY
Affected Vehicles (2)
Browse Affected Vehicles
Affected Models
All data is sourced from NHTSA public records. This site is not affiliated with, endorsed by, or operated by the National Highway Traffic Safety Administration or any government agency. Complaints are unverified consumer reports submitted to NHTSA and may not reflect confirmed defects. For official information, visit nhtsa.gov.
Data synced from NHTSA on May 4, 2026