Serious vibration, resulting in several transmission/engine repairs to no avail.
The worst 1997 Mack CH problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Engine1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Engine1
Recalls 2
Fuel system, other: storage: tank assembly: pressure relief devices
- What is wrong
- 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.
- 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.
- Remedy
- 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.
Recall number 04V159000 · Recall details
Steering: linkages: drag: link: connection
- What is wrong
- Vehicle description: class 8 heavy duty trucks. During assembly, insufficient torque occurred of the drag link to the axle steering arm connection. If the drag link to axle sttering arm connection is not torqued and the cotter pin is not installed, the nut could back off during vehicle operation.
- Risk
- If the nut backs off, there could be a loss of driver control.
- Remedy
- Dealers will retorque the drag link to the axle steering arm connection.
Recall number 97V191000 · Recall details
Technical service bulletins for the 1997 Mack CH 26
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Mack Chassis
- 2009 Document reformatted to be published as a TSB in Impact
- 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
What 1997 Mack CH owners say
Most recent owner complaints, unedited.
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Questions about the 1997 Mack CH
Is the 1997 Mack CH reliable?
Owners have filed 1 complaint about the 1997 Mack CH, fewer than a typical CH model year.
What is the most common problem with the 1997 Mack CH?
Engine and cooling, with 1 complaint.
How many recalls does the 1997 Mack CH have?
2 recalls, covering fuel system, other and steering.
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