Model year record

1989 MACK MH

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 89V079000

Suspension: front

Component
Suspension: front
Manufacturer
MACK TRUCKS, INCORPORATED
Vehicles affected
100
Reported to NHTSA
1989-05-15
Owners notified
1989-08-16

Defect description

TORQUE ROD BOLTS ARE GRADE 2 INSTEAD OF GRADE 5, WHICH IS NOT TO SPECIFICATION, AND COULD FAIL.

Safety risk

BOLT FAILURE COULD ALLOW THE REAR AXLE TO SHIFT; THISCOULD ADVERSELY AFFECT TRUCK CONTROL AND COULD RESULT IN A CRASH.

Manufacturer remedy

REPLACE TORQUE ROD BOLTS WITH BOLTS OF THE PROPER SPECIFICATION.

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.