Vehicle speed control (Mack)
Vehicle recall 94V-032. NHTSA received MACK TRUCKS, INCORPORATED’s report on Feb 15, 1994.
Watch and the shortlist are kept with a free account, on every device. Your watch list. NHTSA’s own record is on nhtsa.gov.
The short answer
NHTSA received MACK TRUCKS, INCORPORATED’s report on Feb 15, 1994. Copied from NHTSA on Oct 28, 2026.
Every line below is in NHTSA’s own words, with its source beside it.
What’s wrong with it?
IN THE EVENT THE PRIMARY THROTTLE RETURN FAILS, FAILURE OF THE SECONDARY THROTTLE RETURN SYSTEM WOULD NOT PROVIDE PROTECTION AGAINST LOSS OF THROTTLE CONTROL.
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.
NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.
- NHTSA’s part: Vehicle speed control.
What should you do?
A NEW PRODUCTION SECONDARY THROTTLE RETURN SYSTEM CONFIGURATION WILL BE INSTALLED.
NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.
- How to reach the firm: SYSTEM: FUEL; FUEL PUMP.VEHICLE DESCRIPTION: CLASS 8 TRUCKS EQUIPPED WITH E6 AND E7 ENGINES WITH ROBERT BOSCH P7100 MECHANICALLY-GOVERNED FUEL INJECTION PUMPS.NOTE: IF YOUR VEHICLE IS PRESENTED TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND THE REMEDY IS NOT PROVIDED WITHIN A REASONABLE TIME AND FREE OF CHARGE OR THE REMEDY DOES NOT CORRECT THE DEFECT OR NONCOMPLIANCE, PLEASE CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION’S AUTO SAFETY HOTLINE AT 1-800-424-9393.
- Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.
Which ones are recalled?
NHTSA counts 39,777 vehicles potentially involved, across everything this recall names.
NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.
- Mack RBand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack Rand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack MRand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack MHRand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack MHand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack RWand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack DMMand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack CLand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack CHRand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack CHand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack DMand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack Uand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack CFand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack FDMand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack MCand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack RMand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
- Mack RDand 1987, 1988, 1989, 1990, 1991 and 1992, before the model years listed here
Who is recalling it?
- Made by MACK TRUCKS, INCORPORATED.
NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.
What the record doesn’t say
- NHTSA’s recall file doesn’t say whether anyone was hurt.
- Whether one vehicle or seat has been fixed: only its maker, or NHTSA’s lookup with a VIN, can say.
- This recall names only model years before 2015, which have no pages here. Your VIN, at NHTSA, says which recalls are open on a vehicle.
- How many have been returned or fixed isn’t in the notice.
Hearth Record wrote these lines.
Sources
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National Highway Traffic Safety Administration, Recalls flat file before 2010 (FLAT_RCL_PRE_2010).
Released Oct 28, 2026 and checked Oct 28, 2026. Updated daily. Public domain (U.S. Government work).
Vehicle, car seat, tire and vehicle equipment recalls, owner complaints and crash ratings are from the National Highway Traffic Safety Administration (NHTSA). Copied on Oct 28, 2026.