1991 Mack FDM: recalls and complaints
NHTSA lists 3 recall campaigns for the 1991 Mack FDM. The newest campaign is 94V032000. NHTSA received the report on 15 Feb 1994. The NHTSA record gives the component Vehicle Speed Control. NHTSA has no complaint on file for this model year.
The NHTSA recall file shows no do-not-drive advisory and no park-outside advisory on these campaigns.
This page cannot show if a recall applies to one vehicle. The NHTSA VIN lookup shows the unrepaired recalls of one vehicle.
Remedy of the newest campaign, 94V032000, in the NHTSA record
A new production secondary throttle return system configuration will be installed.
Complaint information entered into NHTSA’s Office of Defects Investigation vehicle owner's complaint database is used with other data sources to identify safety issues that warrant investigation and to determine if a safety-related defect trend exists.
NHTSA publishes these words. Source: NHTSA Datasets and APIs, section Complaints, read on . Complaint file through . Recall file through .
Since the last update
No tracked figure of this page changed in a data update. What the log tracks
Recall campaigns
3 campaigns, newest first. 50,907 units in total.
94V032000Received . 39,777 units.
Vehicle Speed Control
- Defect, in the NHTSA record
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.
- Consequence, in the NHTSA record
In the event the primary throttle return fails, failure of the secondary throttle return system would not provide protection against loss of throttle control.
- Remedy, in the NHTSA record
A new production secondary throttle return system configuration will be installed.
Report filed by MACK TRUCKS, INCORPORATED. Owner notification date in the NHTSA record: .
93V176000Received . 130 units.
Power Train / Driveline
- Defect, in the NHTSA record
The driveshaft to the front driving axle is secured to a bracket using two pillow blocks. These blocks are of insufficient strength to support the driveshaft and could fail.
- Consequence, in the NHTSA record
Pillow block failure allows the driveline (jackshaft)to drop down onto the roadway and create a safety hazard to other vehicles.
- Remedy, in the NHTSA record
Mack will install thicker pillow blocks and support u-bolts.
Report filed by MACK TRUCKS, INCORPORATED. Owner notification date in the NHTSA record: .
93V137000Received . 11,000 units.
Engine and Engine Cooling / Cooling System / Fan
- Defect, in the NHTSA record
The engine cooling fan blades may break due to inadequate blade strength around the rivets that attach the blades to the fan spider.
- Consequence, in the NHTSA record
If complete fracture of the fan blade occurs, it couldbe propelled outside the fan shroud, injuring person(s) in the vicinity ofthe truck.
- Remedy, in the NHTSA record
An improved fan will be installed on these vehicles.
Report filed by MACK TRUCKS, INCORPORATED. Owner notification date in the NHTSA record: .
The campaign number opens the NHTSA record. Each quotation is the text of the NHTSA recall file.
Recall campaign: One recall in the NHTSA recall file, with one campaign number. A campaign can name many makes, models and model years.
Units: The number of vehicles or products that a recall can include. The manufacturer or the firm reports the number to the agency.
Complaints by component
The NHTSA complaint file has no complaint for this model year.
Investigations
The NHTSA investigation file has no investigation that names this model year.
Investigation: A study of a possible safety defect by the NHTSA Office of Defects Investigation. An investigation with no closing date in the NHTSA file is open.
Other model years
The number under each year is the number of recall campaigns.
A year without a link has fewer than 2 campaigns and fewer than 25 complaints. It has no page.
Follow by RSS:Mack recallsVehicle recalls
Official channels
- NHTSA VIN lookupNHTSA shows the unrepaired recalls of one vehicle from its VIN or its license plate.
- NHTSA: report a safety problemThe NHTSA form for a complaint about a vehicle, a tire, a child seat or equipment.
- NHTSA page of the 1991 Mack FDMThe recalls, the complaints and the investigations that NHTSA shows for this model year.
Cite this page
Recall Register. 1991 Mack FDM: recalls and complaints. https://recallregister.com/vehicle/mack/fdm/1991/. Source: NHTSA Office of Defects Investigation, recall, complaint and investigation files. Data through .
Sources
- Source
- NHTSA Office of Defects Investigation
- Licence
- US government work, public domain
- Recall file through
- 29 Sep 2026
- Complaint file through
- 15 May 2019
- First complaint in the file
- 1 Jan 1995
- Manufacturer in the recall file
- MACK TRUCKS, INCORPORATED
The NHTSA record is the authority. A complaint count is the number of different complaint numbers for the make, the model and the model year. How the register is made. Report an error.
Questions
- How many units are in the recall campaigns for the 1991 Mack FDM?
- 50,907 units in 3 campaigns. A campaign can name other models and model years, and its units include them.
- How many recall campaigns does the Mack FDM have for all model years?
- NHTSA lists 4 recall campaigns for the Mack FDM, model years 1987 to 1997. 3 of them name the 1991 model year.
- Is an NHTSA investigation of the 1991 Mack FDM open?
- The NHTSA investigation file has no investigation that names this model year.