NHTSA recall campaign

94V032000

ManufacturerMACK TRUCKS, INCORPORATEDReported1994-02-15Affected39,777 vehicles

What was wrong

Defect

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.

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.

To check whether your specific VIN is covered and to find a participating dealer, look this campaign up on NHTSA.gov →

Affected vehicles

102 entries

Mack
- CF1987 1988 1989 1990 1991 1992
- CH1987 1988 1989 1990 1991 1992
- CHR1987 1988 1989 1990 1991 1992
- CL1987 1988 1989 1990 1991 1992
- DM1987 1988 1989 1990 1991 1992
- DMM1987 1988 1989 1990 1991 1992
- FDM1987 1988 1989 1990 1991 1992
- MC1987 1988 1989 1990 1991 1992
- MH1987 1988 1989 1990 1991 1992
- MHR1987 1988 1989 1990 1991 1992
- MR1987 1988 1989 1990 1991 1992
- R1987 1988 1989 1990 1991 1992
- RB1987 1988 1989 1990 1991 1992
- RD1987 1988 1989 1990 1991 1992
- RM1987 1988 1989 1990 1991 1992
- RW1987 1988 1989 1990 1991 1992
- U1987 1988 1989 1990 1991 1992