Model year record

1991 MACK MR

2 recall campaigns on file for this model year. No owner complaints on file.

Recalls

Recall campaignNHTSA 94V032000

Vehicle speed control

Component
Vehicle speed control
Manufacturer
MACK TRUCKS, INCORPORATED
Vehicles affected
39,777
Reported to NHTSA
1994-02-15
Owners notified
1994-05-27

Defect description

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.

Safety risk

IN THE EVENT THE PRIMARY THROTTLE RETURN FAILS, FAILURE OF THE SECONDARY THROTTLE RETURN SYSTEM WOULD NOT PROVIDE PROTECTION AGAINST LOSS OF THROTTLE CONTROL.

Manufacturer remedy

A NEW PRODUCTION SECONDARY THROTTLE RETURN SYSTEM CONFIGURATION WILL BE INSTALLED.

Recall campaignNHTSA 91V196000

Power train: manual transmission: shift pattern indicator

Component
Power train: manual transmission: shift pattern indicator
Manufacturer
MACK TRUCKS, INCORPORATED
Vehicles affected
308
Reported to NHTSA
1991-10-21
Owners notified
1992-01-23

Defect description

THE STONE BENNETT SHIFTERS DO NOT INDICATE THE RELATIVE POSITION OF THE SHIFT LEVER TO THE DRIVER.

Safety risk

THE SHIFT LEVER DOES NOT MEET THE REQUIREMENTS OF FMVSS102.

Manufacturer remedy

INSTALL A DECAL DISPLAYING THE RELATIVE SHIFT POSITIONS.

Owner complaints

A complaint is one person's report to a federal agency. It is not a finding.

No complaints recorded for this model year.

Safety recall repairs are provided free of charge by franchised dealers, regardless of vehicle age or mileage. This page displays aggregated data for the model year. To check recall status for a specific vehicle, search its VIN at nhtsa.gov.