Mack Trucks, Incorporated: Vehicle Speed Control
Mack Trucks, Incorporated reported this defect to federal regulators on Feb 15, 1994 and put the number of vehicles at risk at 39,777. The repair is free for as long as the recall stands.
The 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.
The 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.
The remedy
A NEW PRODUCTION SECONDARY THROTTLE RETURN SYSTEM CONFIGURATION WILL BE INSTALLED.
51 model years covered
Newest first| Vehicle | Complaints | Recalls | Fires | Crashes |
|---|---|---|---|---|
| 1992 Mack CF | 0 | 1 | 0 | 0 |
| 1992 Mack CH | 1 | 6 | 0 | 0 |
| 1992 Mack CHR | 0 | 1 | 0 | 0 |
| 1992 Mack CL | 0 | 3 | 0 | 0 |
| 1992 Mack DM | 0 | 3 | 0 | 0 |
| 1992 Mack DMM | 0 | 1 | 0 | 0 |
| 1992 Mack FDM | 0 | 2 | 0 | 0 |
| 1992 Mack MC | 0 | 1 | 0 | 0 |
| 1992 Mack MH | 0 | 2 | 0 | 0 |
| 1992 Mack MHR | 0 | 1 | 0 | 0 |
| 1992 Mack MR | 0 | 3 | 0 | 0 |
| 1992 Mack R | 0 | 1 | 0 | 0 |
| 1992 Mack RB | 0 | 3 | 0 | 0 |
| 1992 Mack RD | 0 | 3 | 0 | 0 |
| 1992 Mack RM | 0 | 2 | 0 | 0 |
| 1992 Mack RW | 0 | 1 | 0 | 0 |
| 1992 Mack U | 0 | 1 | 0 | 0 |
| 1991 Mack CF | 0 | 1 | 0 | 0 |
| 1991 Mack CH | 0 | 5 | 0 | 0 |
| 1991 Mack CHR | 0 | 1 | 0 | 0 |
| 1991 Mack CL | 0 | 2 | 0 | 0 |
| 1991 Mack DM | 0 | 1 | 0 | 0 |
| 1991 Mack DMM | 0 | 1 | 0 | 0 |
| 1991 Mack FDM | 0 | 3 | 0 | 0 |
| 1991 Mack MC | 0 | 1 | 0 | 0 |
| 1991 Mack MH | 0 | 1 | 0 | 0 |
| 1991 Mack MHR | 0 | 1 | 0 | 0 |
| 1991 Mack MR | 0 | 2 | 0 | 0 |
| 1991 Mack R | 0 | 1 | 0 | 0 |
| 1991 Mack RB | 0 | 1 | 0 | 0 |
| 1991 Mack RD | 0 | 1 | 0 | 0 |
| 1991 Mack RM | 0 | 1 | 0 | 0 |
| 1991 Mack RW | 0 | 2 | 0 | 0 |
| 1991 Mack U | 0 | 1 | 0 | 0 |
| 1990 Mack CF | 0 | 2 | 0 | 0 |
| 1990 Mack CH | 0 | 5 | 0 | 0 |
| 1990 Mack CHR | 0 | 1 | 0 | 0 |
| 1990 Mack CL | 0 | 2 | 0 | 0 |
| 1990 Mack DM | 0 | 1 | 0 | 0 |
| 1990 Mack DMM | 0 | 1 | 0 | 0 |
| 1990 Mack FDM | 0 | 2 | 0 | 0 |
| 1990 Mack MC | 0 | 2 | 0 | 0 |
| 1990 Mack MH | 0 | 1 | 0 | 0 |
| 1990 Mack MHR | 0 | 1 | 0 | 0 |
| 1990 Mack MR | 0 | 3 | 0 | 0 |
| 1990 Mack R | 0 | 2 | 0 | 0 |
| 1990 Mack RB | 0 | 1 | 0 | 0 |
| 1990 Mack RD | 0 | 2 | 0 | 0 |
| 1990 Mack RM | 0 | 1 | 0 | 0 |
| 1990 Mack RW | 0 | 1 | 0 | 0 |
| 1990 Mack U | 0 | 1 | 0 | 0 |
What this page is, and what to do next
A recall is not an opinion. It is a Part 573 report a manufacturer is required by federal law to file once it decides a defect poses an unreasonable risk to safety, and it commits them to repairing the vehicle at no cost to the owner. The three passages above are the manufacturer’s own wording as published by NHTSA.
This page describes the campaign. It cannot tell you whether one particular car has already been through the shop — that is tracked by VIN, and only the manufacturer knows it. Check yours at nhtsa.gov/recalls or with a franchised dealer, quoting campaign number 94V032000.
Full record for the 1992 Mack CF → · Recalls carrying a do-not-drive advisory → · Where this data comes from →