- Vehicles
- 39,777
- Built between
- Jul 1987 – Jul 1992
- Models
- 17
- Recall type
- Vehicle
- Initiated by
- NHTSA investigation
- Owners notified
- 27 May 1994
- Repaired
- Not reported
- Unrepaired
- Not reported
Does this affect my vehicle?
This recall covers vehicles built between July 1987 and July 1992. If yours was built outside that window, it is not part of this recall.
- 1987-1992 Mack CFBuilt July 1987 to July 1992
- 1987-1992 Mack CHBuilt July 1987 to July 1992
- 1987-1992 Mack CHRBuilt July 1987 to July 1992
- 1987-1992 Mack CLBuilt July 1987 to July 1992
- 1987-1992 Mack DMBuilt July 1987 to July 1992
- 1987-1992 Mack DMMBuilt July 1987 to July 1992
- 1987-1992 Mack FDMBuilt July 1987 to July 1992
- 1987-1992 Mack MCBuilt July 1987 to July 1992
- 1987-1992 Mack MHBuilt July 1987 to July 1992
- 1987-1992 Mack MHRBuilt July 1987 to July 1992
- 1987-1992 Mack MRBuilt July 1987 to July 1992
- 1987-1992 Mack RBuilt July 1987 to July 1992
- 1987-1992 Mack RBBuilt July 1987 to July 1992
- 1987-1992 Mack RDBuilt July 1987 to July 1992
- 1987-1992 Mack RMBuilt July 1987 to July 1992
- 1987-1992 Mack RWBuilt July 1987 to July 1992
- 1987-1992 Mack UBuilt July 1987 to July 1992
What the defect is
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 could 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.
What gets fixed
A NEW PRODUCTION SECONDARY THROTTLE RETURN SYSTEM CONFIGURATION WILL BE INSTALLED.
Timeline
- Vehicles builtJuly 1987 to July 1992
- Recall reported to NHTSA15 February 1994
- Owners notified27 May 1994
Your rights
A safety recall repair is free. Under US federal law the manufacturer must fix a safety defect at no cost to you — no charge for parts, labor or diagnosis — whether or not you are the original owner. A dealer cannot charge you for recall work, and cannot require you to have bought the vehicle from them.
That entitlement is not unlimited. It applies where the vehicle was first sold less than 15 years before the recall was announced — 5 years for tires. Past that a manufacturer may still do the repair free of charge, and many do, but they are no longer obliged to. This recall was reported on 15 February 1994.
To arrange the repair, contact any franchised dealer for the brand. If a dealer refuses the work or tries to charge for it, you can report that to NHTSA at nhtsa.gov/recalls or on 1-888-327-4236.
Official source
- Recalling manufacturer
- MACK TRUCKS, INCORPORATED
- Recall initiated by
- ODI
Everything on this page — the models listed, the build dates and the repair figures — comes from the manufacturer's filing to NHTSA and describes the vehicle line as a whole, not any individual car. Only the manufacturer can confirm whether a specific vehicle is affected, and whether its recall work has already been carried out. Check yours by VIN and read the official notice at nhtsa.gov/recalls.
Additional 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.
Check your own vehicle
This page describes the recall, not any one car. To see which recalls cover a specific vehicle, search by make, model and year.
A VIN lookup here identifies your vehicle and shows recalls issued for that make, model and year. It cannot tell you what is still open on your individual car - only the manufacturer knows that. Search by VIN instead, or check your VIN at nhtsa.gov for whether a recall is still open on your individual car.