Recall 94V032000: 1987–1992 Mack MR and 4 other models
- Report received
- Feb 15, 1994
- Manufacturer
- Mack trucks, incorporated
- Potentially affected
- 39,777vehicles
- Model years
- 1987–1992
Check your own vehicle. A recall applies only to vehicles within the affected build range. Enter your VIN at nhtsa.gov/recalls. Recall repairs are free at a franchised dealer.
What NHTSA recorded
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.
Possible 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.
Affected model years
Pages for each model year show complaints, parts, mileage and other recalls.
- 1987 Mack CH0 complaints
- 1988 Mack CH0 complaints
- 1989 Mack CH0 complaints
- 1990 Mack CH0 complaints
- 1991 Mack CH0 complaints
- 1992 Mack CH1 complaints
- 1987 Mack CL0 complaints
- 1988 Mack CL0 complaints
- 1989 Mack CL0 complaints
- 1990 Mack CL0 complaints
- 1991 Mack CL0 complaints
- 1992 Mack CL0 complaints
- 1987 Mack DM0 complaints
- 1988 Mack DM0 complaints
- 1989 Mack DM0 complaints
- 1990 Mack DM0 complaints
- 1991 Mack DM0 complaints
- 1992 Mack DM0 complaints
- 1987 Mack MR0 complaints
- 1988 Mack MR0 complaints
- 1989 Mack MR0 complaints
- 1990 Mack MR0 complaints
- 1991 Mack MR0 complaints
- 1992 Mack MR0 complaints
- 1987 Mack RD2 complaints
- 1988 Mack RD0 complaints
- 1989 Mack RD0 complaints
- 1990 Mack RD0 complaints
- 1991 Mack RD0 complaints
- 1992 Mack RD0 complaints
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.