1999 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated July 2026
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1999 Ford Ranger has 1 documented known issues. No issues are rated critical, indicating generally reliable ownership. Across all issues, repair costs range from $100 to $400. DIY maintenance guides at au7o.io.
On the 1994-2010 Ford Ranger, the 4.0L V6 uses a waste-spark coil pack with only three coils firing six plugs in paired cylinders, and it has a high failure rate — especially the end of the pack that serves the paired 3 & 4 cylinders (they share a secondary winding). A failing coil makes the misfire jump between the two paired cylinders, throwing P0300 plus paired cylinder codes, rough running and hesitation. Aged plugs and cracked plug wires compound it.
Swap the suspect coil pack to a different position — if the misfire follows the coil, the coil is bad (replace the coil pack; Motorcraft DG-series). Inspect the coil harness for burnt/frayed wiring, and replace the spark plugs and plug wires with correct Motorcraft parts as a set. Verify no vacuum leak (a lean condition can also set random misfire).
The exact parts — OEM, plus what owners actually use. Skip the internet hunt.
The primary repair part. Motorcraft DGE-446, OEM PN FOTZ-12029-A, is the 3-coil waste-spark pack for the 4.0L OHV pushrod V6 (approx. 1990-2000 Ranger; also Explorer/Aerostar). This is the correct 'swap-to-diagnose / replace' part named in the fix (DG/DGE-series). NOTE: the 4.0L SOHC (2001+) instead
Correct Motorcraft platinum plug for the 4.0L OHV is AWSF-32PP (double-platinum), now superseded by the fine-wire AGSF-32FM / SP-432. Replace all 6 as a set per the fix. Gap ~0.042-0.054 depending on plug/year — verify against the VECI decal. Priced as a set of 6 (~$4-7/plug). Verified via RockAuto,
Motorcraft WR-5791 is the spark plug wire set for 1995-2000 Ford Ranger/Explorer 4.0L OHV. The fix calls for replacing cracked wires as a set alongside the plugs. Aftermarket ~$35-50, Motorcraft ~$50-70. Verified via Motorcraft/Ford OEM parts outlets, PartsGeek, Amazon.
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AIR BAGS:FRONTAL:DRIVER SIDE:INFLATOR MODULE
Ford Motor Company (Ford) is recalling certain 2007-2011 Ranger, 2006-2012 Fusion, Lincoln Zephyr, Lincoln MKZ, 2006-2011 Mercury Milan, 2007-2010 Ford Edge, and Lincoln MKX vehicles. The driver's side air bag inflator may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE
Ford Motor Company (Ford) is recalling certain 2014 Ford Mustang vehicles sold, or ever registered, in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A." Additionally, Ford is recalling certain 2011 Ford Ranger and Mercury Milan vehicles, 2011-2012 Ford Fusion and Lincoln Zephyr/MKZ vehicles and 2011-2014 Ford Mustang vehicles sold, or ever registered, in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia or "Zone B." Ford is also recalling certain 2010 Ford Edge and Lincoln MKX vehicles, 2010-2011 Ford Ranger and Mercury Milan vehicles, 2010-2012 Ford Fusion and Lincoln Zephyr/MKZ vehicles, and 2010-2014 Ford Mustang vehicles sold, or ever registered, in the states of AK, CO, CT, ID, IA, ME, MA, MI, MN, MT, NH, NY, ND, OR, RI, SD, UT, VT, WA, WI, and WY or "Zone C." These vehicles are equipped with air bag inflators assembled as part of the passenger frontal air bag modules, used as original equipment or replacement equipment (such as after a vehicle crash necessitating replacement of the original air bags), that may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE
Ford Motor Company (Ford) is recalling certain air bag inflator and/or module replacement service parts that may have been used as part of a collision repair. The parts include certain driver-side air bag inflators and/or modules, designed to fit 2005-2014 Ford Mustang and Mustang GT500. It also includes certain passenger-side air bag inflators and/or modules designed to fit 2005-2014 Ford Mustang, 2010-2012 Lincoln MKZ, 2010-2012 Ford Fusion, 2010-2011 Mercury Milan, 2007-2011 Ford Ranger, and 2007-2010 Lincoln MKX vehicles. Please see Ford's recall report for the specific part numbers. These parts may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.
AIR BAGS:FRONTAL
Ford Motor Company (Ford) is recalling certain 2005-2014 Mustang, 2004-2011 Ranger, 2009-2011 Mercury Milan, 2006 Ford GT, 2008-2012 Fusion, 2007-2010 Edge and Lincoln MKX, and 2009-2010 Lincoln MKZ vehicles. These vehicles may be equipped with a driver or passenger frontal air bag inflator used as a replacement service part, that may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE
Ford Motor Company (Ford) is recalling certain 2013 Ford Mustang vehicles sold, or ever registered in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A." Additionally, Ford is recalling certain 2010 Ford Edge, Fusion, Mustang and Ranger, Lincoln MKX and Zephyr/MKZ, and Mercury Milan vehicles ever registered in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia or "Zone B." Ford is also recalling certain 2009 Ford Edge, Fusion, Mustang and Ranger, Lincoln MKX and Zephyr/MKZ, and Mercury Milan vehicles ever registered in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming or "Zone C." These vehicles are equipped with air bag inflators assembled as part of the passenger frontal air bag modules, used as original equipment or replacement equipment (such as after a vehicle crash necessitating replacement of the original air bags), that may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.
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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1999-1999 Ford Ranger has 1 documented issues. The most frequently reported are: 4.0L SOHC / OHV Waste-Spark Coil Pack Misfire (P0300 Series). None are rated critical, but regular maintenance is recommended.
The 1999-1999 Ford Ranger has 1 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Ford Ranger issues range from $100 to $400, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
The 4.0L V6 uses a waste-spark coil pack with only three coils firing six plugs in paired cylinders, and it has a high failure rate — especially the end of the pack that serves the paired 3 & 4 cylinders (they share a secondary winding). A failing coil makes the misfire jump betw… Repairs typically run $100-$400. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
