2003 Mazda Protege Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Mazda Protege
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2003 Mazda Protege ProblemsEngine Cranks and Doesn't Start
An electrically shorted air flow sensor can cause a crank-no start condition. Diagnosis may show that ignition spark is normal, and there are no trouble codes stored.
The timing belt tensioner pulley may make a squealing noise from the timing cover area on cold startup. An updated tensioner with a thicker mounting bracket to eliminate vibration may be needed to solve the problem.
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.
2003 Mazda Protege QuestionsGas coming out of exhaust (1 answer)
New coil pack, plugs, wires. Still running rough and didn't help. What else can be the problem?