The worst 1992 Mack FDM problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
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Recalls 2
Vehicle speed control
- 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.
- 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.
- Remedy
- A new production secondary throttle return system configuration will be installed.
Recall number 94V032000 · Recall details
Engine and engine cooling: cooling system: fan
- What is wrong
- The engine cooling fan blades may break due to inadequate blade strength around the rivets that attach the blades to the fan spider.
- Risk
- If complete fracture of the fan blade occurs, it couldbe propelled outside the fan shroud, injuring person(s) in the vicinity ofthe truck.
- Remedy
- An improved fan will be installed on these vehicles.
Recall number 93V137000 · Recall details
Technical service bulletins for the 1992 Mack FDM 21
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
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Questions about the 1992 Mack FDM
Is the 1992 Mack FDM reliable?
Owners have filed 0 complaints about the 1992 Mack FDM.
What is the most common problem with the 1992 Mack FDM?
There are not enough complaints to tell.
How many recalls does the 1992 Mack FDM have?
2 recalls, covering vehicle speed control and engine and engine cooling.
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