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

Problem Description and Possible Solution

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

Problem Data
RepairPal Verified
Average mileage: 117,570 (100,021–141,000)
3 model years affected: 1991, 2003, 2007
5 people reported this problem
Viewing 1 - 2 of 2 comments
Using oil and turned black. Sutt coming out tailpipe,valves rattling, loss of power and service light is on
bad backpressure on my motor.removedandreplaced cov\nvertorit wasplugged80 percent.fixed theproblem