2003 Mazda Protege Engine Problems

“I recently purchased a '03 Mazda protege5. While driving down the road yesterday at 65 MPH, I heard a loud bang and heard something hit the bottom of the car. The car exhaust suddenly became much louder. I immediately pulled off the road. I looked under the car, and the exhaust had come apart. The piece of the exhaust after the cat was hanging about 1 inch from the ground. This piece is after the catalytic converter, near one of the hanging points of the exhaust system. Two bolts, which hold this piece together, and the exhaust gasket were missing. Luckily, there was no damage whatsoever. …”

“Rough idle causing to stall while driving, check engine light on for cylinder misfire, found cylinder 4 with a bent spark plug with the gap closed. Replaced all 4 plugs car ran fine for a few months only to have the same issue cylinder misfire with cylinder 4 with another bent plug gap closed. Possible something loose inside cylinder 4 causing the misfire issues to the plug. Mileage 130,280”

“The contact owns a 2003 Mazda Protege. The contact attempted to start the vehicle but the engine failed to start accompanied by an abnormal knocking from the engine. The contact also mentioned that the failure occurred more often when the engine was cold. The vehicle was not diagnosed or repaired. The manufacturer was notified. The failure mileage was 13,200.”

“The contact owns a 2003 Mazda Protege. The contact stated that while driving 45 MPH, the check engine warning light illuminated. The vehicle was taken to an independent mechanic for diagnosis where it was stated that the intake manifold needed to be replaced. The vehicle was not repaired and the manufacturer was notified. The approximate failure mileage was 114,000.”

“The contact owns a 2003 Mazda Protege. The contact stated while driving 50 MPH, the vehicle stalled with the check engine warning light illuminated. The vehicle was towed to an independent mechanic to be diagnosed. The contact was informed that the engine and timing belt needed to be replaced. The engine was taken apart and the mechanic found a screw inside of the intake valve. The vehicle was not repaired. An unknown dealer was contacted and informed of the failure. The manufacturer was notified of the failure. The approximate failure mileage was 188,000.”