The 1979 Plymouth Horizon has 3 NHTSA recall campaigns affecting an estimated 780,022 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 1 complaint with NHTSA, most often about the latches/locks/linkages. Last updated July 5, 2026.
THE ENGINE COMPARTMENT FUEL LINE HOSES INSTALLED ON CERTAIN VEHICLES WERE FABRICATED FROM A DEFECTIVE RUBBER COMPOUND. WHEN SUBJECTED TO CONTINUOUS HIGH UNDERHOOD TEMPERATURES, THESE HOSES MAY BECOME BRITTLE AND CRACK.
THE DEALER WILL REPLACE FUEL SUPPLY AND VAPOR RETURN HOSES WITH A TYPE CONSTRUCTED OF HIGH TEMPERATURE-RESISTANT MATERIAL.
THE ALTERNATOR FIELD WIRING TERMINAL CONNECTIONS ON THE INVOLVED VEHICLES MAY LOOSEN DUE TO VIBRATION, POSSIBLY RESULTING IN AN OPEN CIRCUIT CONDITION. SHOULD THIS OCCUR, ALTERNATOR ELECTRICAL OUTPUT TO SUPPORT THE VEHICLES ELECTRICAL LOADS AND THE BATTERY CHARGING SYSTEM WOULD BE LOST. THIS WOULD EVENTUALLY RESULT…
DEALER WILL INSTALL AN ALTERNATOR REPAIR KIT WHICH INCLUDES A NEW ALTERNATOR WIRING HARNESS AS WELL AS NEW TERMINALS. DEALER WILL ALSO INSPECT THE VEHICLE FOR THE PRESENCE OF A REQUIRED SECOND ALTERNATOR GROUND STRAP AND ADD ONE IF NECESSARY.
THE WHEEL MOUNTING NUTS INSTALLED MAY BE INCORRECT DUE TO A SUPPLIER ERROR IN MIXING STANDARD THREAD NUTS WITH SPECIFIED METRIC THREAD NUTS PRIOR TO PLANT SHIPMENT. AS A RESULT, THE NUT THREADS MAY STRIP WHEN TIGHTENED TO THE SPECIFIED TORQUE LEVEL RANGE, WITH THE POTENTIAL FOR THE LOOSENING OF A ROAD WHEEL.
DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE EXISTING NUTS WITH THE PROPER METRIC THREAD NUTS, WITHOUT CHARGE TO OWNER.
Verbatim reports filed with NHTSA, lightly edited for readability and with personal information removed.
“Hatchback latch failure, causing baby to be ejected from vehicle. (attorney for client)*sd”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1979 Plymouth Horizon as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.