Most Common Car Issues
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Model
745i
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MOST COMMON PROBLEMS
BMW 745i 2003
The 2003 BMW 745i is a premium sedan crafted by BMW AG in Dingolfing, Germany. Equipped with a robust 325 hp V8 engine, this 4-door saloon runs on gasoline and boasts a wheelbase of 117.7 inches. Its gross vehicle weight rating ranges up to 6,000 lbs, delivering a blend of performance and luxury.
Spec:
Engine Brake (hp) From
325
Engine Number of Cylinders
8
Problems:
Oil leaks
The BMW 745i is known for developing oil leaks, particularly from the valve cover gaskets and oil pan gasket. These leaks can lead to low oil levels and potential engine damage if not addressed.
Cooling system issues
The 2003 BMW 745i may experience problems with its cooling system, such as radiator leaks, water pump failures, and thermostat issues, which can lead to engine overheating if not properly maintained.
Timing chain problems
The timing chain in the BMW 745i can stretch or fail over time, leading to poor engine performance or even catastrophic engine damage if the chain breaks.
Fuel pump failure
The fuel pumps in the 2003 BMW 745i can fail, causing issues with fuel delivery to the engine, which can result in stalling, poor acceleration, or the engine not starting at all.
Electronic control unit (ecu) malfunctions
The electronic control unit in the BMW 745i can experience software or hardware issues that affect engine performance and drivability, often requiring reprogramming or replacement.
Vacuum leaks
The BMW 745i may develop vacuum leaks in the intake manifold or other components, leading to rough idling, poor fuel economy, and reduced engine performance.