1991 Mack MR Problems: 0 Complaints, 2 Recalls

The worst 1991 Mack MR problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

Tap a problem to see which part fails, at what mileage and in which other years.

Vehicle speed controlReported February 15, 1994 · 39,777 vehicles affected

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

Power train: manual transmission: shift pattern indicatorReported October 21, 1991 · 308 vehicles affected

What is wrong: The stone bennett shifters do not indicate the relative position of the shift lever to the driver.
Risk: The shift lever does not meet the requirements of fmvss102.
Remedy: Install a decal displaying the relative shift positions.

Recall number 91V196000 · Recall details

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

Used buying checklistWhat to check on a 1991 Mack MR before you buy

Is the 1991 Mack MR reliable?

Owners have filed 0 complaints about the 1991 Mack MR.

What is the most common problem with the 1991 Mack MR?

There are not enough complaints to tell.

How many recalls does the 1991 Mack MR have?

2 recalls, covering vehicle speed control and power train.

See the problems and recalls for an exact car

Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.