The worst 1993 Mack MR problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
Recalls 1
Trailer hitches
- What is wrong
- The carrier yoke bolts were manufactured with worn rolling thread dies, causing stress concentrations which caused cracks during the quenching process.
- Risk
- This condition can cause bolt failure and allow thedriveline to separate from the carrier assembly.
- Remedy
- Replace the carrier yoke bolts.
Recall number 93V024000 · Recall details
Technical service bulletins for the 1993 Mack MR 22
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- US10 Emission Engines
- Automated Manual Transmission ( AMT ) I-Shift / mDRIVE
- (Back Office)
- Programming Failure
- NOx Sensor Troubleshooting Guide
- Use for new vehicles (US21+OBD22
- Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide
- DEF Pump Troubleshooting Guide
- Temperature Sensor Troubleshooting Guide
- Mack Chassis
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Questions about the 1993 Mack MR
Is the 1993 Mack MR reliable?
Owners have filed 0 complaints about the 1993 Mack MR.
What is the most common problem with the 1993 Mack MR?
There are not enough complaints to tell.
How many recalls does the 1993 Mack MR have?
1 recall, covering trailer hitches.
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