Leaks are known to develop in the cooling system. It is common to see more than one part recommended for repair/replacement due to overlapping labor and the use of many plastic parts in the system.
Car problem reports
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Newest reported 2001 BMW 740iL problems
The front thrust rod bushings—also referred to as tension strut bushings—are known to fail occasionally. The oil-filled rubber mounts weaken and crack over time, causing a mushy road feel and shuddering in the steering wheel when going over bumps.
A fluid leak may develop from one or more power steering hose. When a leak is being repaired, it is not uncommon for multiple hoses to be replaced.
Not only when I started the car did I heard a humming noise coming from the gas tank, it happened fairly often while driving - more during accelerating. Had the fuel pump changed, stopped most of the humming noise but still get a much lower level humming noise off & on quite often - What did I need to do now?