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Engine & cooling

1975 Mack U Engine problems

No owner has filed a complaint about the 1975 Mack U's engine & cooling with NHTSA. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

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Complaints
0
Recalls
1
Crashes
0
Fires
0
Injuries
0
Deaths
0

Engine recalls for the 1975 Mack U

Engine and engine cooling: fan

77V17300048,000 vehicles affected

The problem
The flex blade fans on the involved vehicles may develop cracks in the laminated stiffener as a result of fatigue during operation. If such a condition exists and the cracks go undetected, continued operation could cause pieces of the stiffener to break off.
The fix
Dealer will replace the original fan with a steel fixed blade fan, free of charge.

Engine complaints

No complaints about this area yet.

Mack U engine complaints by year

U engine problems, every year

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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

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