Mack · Canada · High
Mack Truck: Engine
Affects Mack Truck · 1987–1992 — about 3K vehicles.
The hazard
NOTE: VEHICLES EQUIPPED WITH ROBERT BOSCH P7100 MECHANICALLY GOVERNED FUEL PUMPS. HIGH ENGINE VIBRATION LEVELS COULD RESULT IN ACCELERATED WEAR OF THE SECONDARY THROTTLE RETURN MECHANISM. IN THE EVENT OF FAILURE OF THE PRIMARY RETURN MECHANISM, A WORN SECONDARY MECHANISM MIGHT NOT RETURN THE ENGINE TO IDLE WHEN THE ACCELERATOR PEDAL IS RELEASED. THIS COULD RESULT IN LOSS OF VEHICLE CONTROL. CORRECTION: LINKAGE WHICH IS SUBJECT TO WEAR WILL BE REPLACED WITH A MULTI-STRAND COILED CABLE.
What to do
Contact your dealer; the remedy details were not included in the filing.
Critical — crash/injury risk now
High — injury risk; see remedy
Moderate — fix at next service
Low — minor / informational