Catalytic converters may go bad and plug exhaust on Ford F-150

Catalytic converters can go bad and potentially plug the exhaust, hurting engine efficiency and performance.

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Average mileage: 141,000 (141,000–141,000)
1 model year affected: 1991
2 people reported this problem
1 person shared problem details
1991 Ford F-150141,000
bad backpressure on my motor.removedandreplaced cov\nvertorit wasplugged80 percent.fixed theproblem
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