Report: Idles Rough, Misfires, and Possible Check Engine Light
Mazda Protege Problem
Engines Affected: 1.6L 4 Cylinder, 1.8L 4 Cylinder
Average Mileage: 143,666 mi (60,000 mi - 243,000 mi)
A loose or corroded ground terminal on the driver's side of the cylinder head can cause a rough idle, misfires, and there may be trouble codes. Restore the ground to the cylinder head.