- The problem
- On certain chassis built with lng engines, the nexgen lng tank's primary and secondary relief valves could fail to open and relieve tank pressure.
- The risk
- This could cause ice buildup on the discharge side of the primary and secondary pressure system allowing the relief system to freeze and become blocked resulting in over pressurization of the lng tanks creating the risk of catastrophic tank rupture which could cause serious injury or death.
- The fix
- Dealers will retrofit the lng tanks with a new primary relief valve pipe away tube and a new ventilated shroud. The recall began april 6, 2004. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact mack at 1-610-709-3337.
Vehicle safety record
1998 Mack MR Problems, complaints & recalls
No owner complaints about the 1998 Mack MR have been filed with NHTSA. It is covered by 3 recalls, the latest in April 2004 for the pressure relief devices.
NHTSA data checked
CAbout as many problems as a typical MR year, for its age
- Complaints
- 0
- Recalls
- 3
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
1998 Mack MR recalls 3
Recall repairs are free. Your dealer fixes them whether or not you bought the car there - check your VIN at nhtsa.gov/recalls to see if yours is done. What to do
- The problem
- Vehicle description: heavy duty trucks built with bendix air abs with an ec-17 1030r electronic control unit (ecu), there have been reports of unwanted abs activation at low speeds caused by 1) chafed abs wheel speed sensor wires on rotating parts or 2) a damaged component at the wheel end that generates a certain type of erratic sensor signal.
- The risk
- This condition could cause the abs ecu to exhaust the air at the air brake modulators for one or more of the wheels. This could result in extended braking distances and a possible crash.
- The fix
- DEALERS WILL REPLACE THE ABS ECU.
- The problem
- Vehicle description: class 8 heavy duty truck chassis equipped with mack 16,000 lb., 18,000 Lb., Or 20,000 lb. Heavy duty steering axles. The inner wheel bearing cone for the steering axle wheel hub assembly does not properly fit onto the mack steering axle spindle assembly. Improper fit of the bearing to the spindle increases the stress levels to the steering axle spindle which could cause spindle failure.
- The risk
- If the spindle fails, a loss of driver control could occur, increasing the risk of a vehicle crash.
- The fix
- Dealers will remove the left and right hub/drum assemblies from the steering axles and replace the inner wheel bearing cones and cups.
What owners say
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No complaints about the 1998 Mack MR yet
No owner has filed a complaint about this vehicle with NHTSA. If yours has a problem, share it here and report it to NHTSA.
Mack MR: every year compared
All MR years1998 Mack MR vs rivals
| Vehicle | Complaints | Recalls | Grade | |
|---|---|---|---|---|
| 1998 Mack MR | 0 | 3 | C | |
| 1998 Mack Mack | 2 | 0 | B | Compare |
| 1998 Mack CL | 1 | 2 | D | Compare |
| 1998 Mack CH613 | 1 | 0 | - | Compare |
More sales usually means more complaints, so compare similar vehicles of the same year. The grade compares each vehicle with its own model's other years.
Questions about the 1998 Mack MR
Does the 1998 Mack MR have any recalls?
Yes - NHTSA lists 3 recalls for the 1998 Mack MR: pressure relief devices (April 2004); antilock (September 2000); wheel bearing (January 1999). Recall repairs are free at any authorized dealer. Enter your VIN at nhtsa.gov/recalls to see whether yours has been fixed.
How many complaints has the 1998 Mack MR had?
None have been filed with NHTSA so far.
Is the 1998 Mack MR a reliable vehicle?
Its Safety Index is 43 out of 100 (grade C: about as many problems as a typical Mack MR year, for its age). The index weighs complaints, crashes, fires, injuries, deaths and recalls against how long the vehicle has been on the road, compared with the same model's other years. It is not a measure of every repair - read the complaints and owner experiences, and have any used vehicle inspected before you buy.
What should I do if my 1998 Mack MR has a problem?
If it is a safety problem, stop driving it if it is unsafe and contact your dealer. Report it to NHTSA at nhtsa.gov/report-a-safety-problem - enough reports start investigations and recalls - and share your experience here so other owners know what to look for.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data