# NHTSA recall 94V032000 A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups. - Published by: NHTSA \(United States\) - Campaign number: 94V032000 - Manufacturer: MACK TRUCKS, INCORPORATED - Reported: 1994\-02\-15 - Owners notified: 1994\-05\-27 - Component: VEHICLE SPEED CONTROL - Units potentially affected: 39777 ## What is wrong 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. ## What can happen IN THE EVENT THE PRIMARY THROTTLE RETURN FAILS, FAILURE OF THE SECONDARY THROTTLE RETURN SYSTEM WOULD NOT PROVIDE PROTECTION AGAINST LOSS OF THROTTLE CONTROL. ## The remedy A NEW PRODUCTION SECONDARY THROTTLE RETURN SYSTEM CONFIGURATION WILL BE INSTALLED. ## Notes 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. ## Vehicles this campaign lists - [1987 MACK CF](/makes/mack/cf/1987/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1988 MACK CF](/makes/mack/cf/1988/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1989 MACK CF](/makes/mack/cf/1989/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1990 MACK CF](/makes/mack/cf/1990/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1991 MACK CF](/makes/mack/cf/1991/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1992 MACK CF](/makes/mack/cf/1992/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1987 MACK CH](/makes/mack/ch/1987/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1988 MACK CH](/makes/mack/ch/1988/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1989 MACK CH](/makes/mack/ch/1989/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1990 MACK CH](/makes/mack/ch/1990/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1991 MACK CH](/makes/mack/ch/1991/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1992 MACK CH](/makes/mack/ch/1992/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - 1987 MACK CHR. Built 1987\-07\-01 to 1992\-07\-01. - 1988 MACK CHR. Built 1987\-07\-01 to 1992\-07\-01. - 1989 MACK CHR. Built 1987\-07\-01 to 1992\-07\-01. - 1990 MACK CHR. Built 1987\-07\-01 to 1992\-07\-01. - 1991 MACK CHR. Built 1987\-07\-01 to 1992\-07\-01. - 1992 MACK CHR. Built 1987\-07\-01 to 1992\-07\-01. - [1987 MACK CL](/makes/mack/cl/1987/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1988 MACK CL](/makes/mack/cl/1988/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1989 MACK CL](/makes/mack/cl/1989/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1990 MACK CL](/makes/mack/cl/1990/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1991 MACK CL](/makes/mack/cl/1991/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1992 MACK CL](/makes/mack/cl/1992/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1987 MACK DM](/makes/mack/dm/1987/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1988 MACK DM](/makes/mack/dm/1988/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1989 MACK DM](/makes/mack/dm/1989/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1990 MACK DM](/makes/mack/dm/1990/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1991 MACK DM](/makes/mack/dm/1991/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1992 MACK DM](/makes/mack/dm/1992/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1987 MACK DMM](/makes/mack/dmm/1987/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1988 MACK DMM](/makes/mack/dmm/1988/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1989 MACK DMM](/makes/mack/dmm/1989/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1990 MACK DMM](/makes/mack/dmm/1990/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1991 MACK DMM](/makes/mack/dmm/1991/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1992 MACK DMM](/makes/mack/dmm/1992/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1987 MACK FDM](/makes/mack/fdm/1987/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1988 MACK FDM](/makes/mack/fdm/1988/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1989 MACK FDM](/makes/mack/fdm/1989/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1990 MACK FDM](/makes/mack/fdm/1990/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1991 MACK FDM](/makes/mack/fdm/1991/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1992 MACK FDM](/makes/mack/fdm/1992/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1987 MACK MC](/makes/mack/mc/1987/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1988 MACK MC](/makes/mack/mc/1988/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1989 MACK MC](/makes/mack/mc/1989/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1990 MACK MC](/makes/mack/mc/1990/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1991 MACK MC](/makes/mack/mc/1991/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1992 MACK MC](/makes/mack/mc/1992/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1987 MACK MH](/makes/mack/mh/1987/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1988 MACK MH](/makes/mack/mh/1988/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1989 MACK MH](/makes/mack/mh/1989/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1990 MACK MH](/makes/mack/mh/1990/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1991 MACK MH](/makes/mack/mh/1991/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1992 MACK MH](/makes/mack/mh/1992/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - 1987 MACK MHR. Built 1987\-07\-01 to 1992\-07\-01. - 1988 MACK MHR. Built 1987\-07\-01 to 1992\-07\-01. - 1989 MACK MHR. Built 1987\-07\-01 to 1992\-07\-01. - 1990 MACK MHR. Built 1987\-07\-01 to 1992\-07\-01. - 1991 MACK MHR. Built 1987\-07\-01 to 1992\-07\-01. - 1992 MACK MHR. Built 1987\-07\-01 to 1992\-07\-01. - [1987 MACK MR](/makes/mack/mr/1987/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1988 MACK MR](/makes/mack/mr/1988/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1989 MACK MR](/makes/mack/mr/1989/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1990 MACK MR](/makes/mack/mr/1990/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1991 MACK MR](/makes/mack/mr/1991/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1992 MACK MR](/makes/mack/mr/1992/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1987 MACK R](/makes/mack/r/1987/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1988 MACK R](/makes/mack/r/1988/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1989 MACK R](/makes/mack/r/1989/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1990 MACK R](/makes/mack/r/1990/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1991 MACK R](/makes/mack/r/1991/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1992 MACK R](/makes/mack/r/1992/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1987 MACK RB](/makes/mack/rb/1987/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1988 MACK RB](/makes/mack/rb/1988/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1989 MACK RB](/makes/mack/rb/1989/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1990 MACK RB](/makes/mack/rb/1990/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1991 MACK RB](/makes/mack/rb/1991/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1992 MACK RB](/makes/mack/rb/1992/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1987 MACK RD](/makes/mack/rd/1987/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1988 MACK RD](/makes/mack/rd/1988/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1989 MACK RD](/makes/mack/rd/1989/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1990 MACK RD](/makes/mack/rd/1990/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1991 MACK RD](/makes/mack/rd/1991/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1992 MACK RD](/makes/mack/rd/1992/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1987 MACK RM](/makes/mack/rm/1987/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1988 MACK RM](/makes/mack/rm/1988/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1989 MACK RM](/makes/mack/rm/1989/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1990 MACK RM](/makes/mack/rm/1990/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1991 MACK RM](/makes/mack/rm/1991/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1992 MACK RM](/makes/mack/rm/1992/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1987 MACK RW](/makes/mack/rw/1987/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1988 MACK RW](/makes/mack/rw/1988/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1989 MACK RW](/makes/mack/rw/1989/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1990 MACK RW](/makes/mack/rw/1990/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1991 MACK RW](/makes/mack/rw/1991/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1992 MACK RW](/makes/mack/rw/1992/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1987 MACK U](/makes/mack/u/1987/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1988 MACK U](/makes/mack/u/1988/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1989 MACK U](/makes/mack/u/1989/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1990 MACK U](/makes/mack/u/1990/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1991 MACK U](/makes/mack/u/1991/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. - [1992 MACK U](/makes/mack/u/1992/recalls.md). Built 1987\-07\-01 to 1992\-07\-01. ## Investigated as SQ93015 This recall followed 1 NHTSA investigation. An investigation is NHTSA looking into a possible defect. It is not a finding that a defect exists, and it does not say that any one vehicle is affected. - SQ93015: Service query. From NHTSA's investigation file, as of 2026-10-19. JSON: [/v1/recalls/nhtsa/94V032000/investigations](/v1/recalls/nhtsa/94V032000/investigations) ## Bulletins for the same vehicles and component A bulletin is the manufacturer's note to its dealers. It is not part of this recall. - [KC\-2143](/bulletins/10215312.md), 2022-07-05, Service bulletin - [KC\-686](/bulletins/10213612.md), 2022-06-07, Service bulletin ## Check a VIN - [NHTSA recall lookup by VIN, United States](https://www.nhtsa.gov/recalls) - [Transport Canada recall search, Canada](https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng) JSON: [/v1/recalls/nhtsa/94V032000](/v1/recalls/nhtsa/94V032000) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20NHTSA%20recall%2094V032000&page=https%3A%2F%2Fopen.wenmarpro.com%2Frecalls%2Fnhtsa%2F94V032000&vehicle=NHTSA%20recall%2094V032000)