FUEL INJECTION SYSTEM RECONFIGURATION TO COMPLY WITH ENGINE EMISSION STANDARDS CAUSE HIGHER ENGINE VIBRATION LEVELS WHICH LEAD TO EARLY WEAR AND COMPLETE FAILURE OF THE SECONDARY THROTTLE RETURN MECHANISM.
Consequence & remedy
Consequence: IN THE EVENT THE PRIMARY THROTTLE RETURN FAILS, FAILURE OF THE SECONDARY THROTTLE RETURN SYSTEM WOULD NOT PROVIDE PROTECTION AGAINST LOSS OF THROTTLE CONTROL.
Remedy: A NEW PRODUCTION SECONDARY THROTTLE RETURN SYSTEM CONFIGURATION WILL BE INSTALLED.
THE STEERING SHAFT SPLINE ENGAGEMENT IS ONLY .52, THE RECOMMENDED ENGAGEMENT IS 2 INCHES.
Consequence & remedy
Consequence: UNDER IMPACTS SUCH AS ROAD POTHOLES, IT COULD RESULT INSHAFT DISENGAGEMENT. THE DRIVER WOULD IMMEDIATELY LOSE STEERING CONTROLWITHOUT WARNING AND VEHICLE CRASH COULD OCCUR.
Remedy: REPLACE SHAFTS THAT MEASURE UNDER THE MINIMUM ENGAGEMENT DIMENSIONS WITH A LONGER SHAFT.
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
0
No exact-year investigations in this snapshot.
1987 Mack Rm Problems, Complaints & Recalls | Skip That Year