QUESTION: Fix punctuation: The drivetrain warranty covers parts of the car such as the engine transmission driveshaft etc
ANS: The drivetrain warranty covers parts of the car such as the engine, transmission, driveshaft etc.

QUESTION: Fix punctuation: Tip Incorrect QX file association errors can be a symptom of other underlying issues within your Windows operating system
ANS: Tip: Incorrect QX file association errors can be a symptom of other underlying issues within your Windows operating system.

QUESTION: Fix punctuation: A Server Administrator user mode A is the administrator of a DALnet server
ANS: A Server Administrator (user mode +A) is the administrator of a DALnet server.

QUESTION: Fix punctuation: In 184142 his fame in Berlin as a pianist in particular among female music lovers reached the point that Heinrich Heine coined the phrase Lisztomania to describe this hysteria
ANS:
In 1841/42 his fame in Berlin as a pianist in particular among female music lovers reached the point that Heinrich Heine coined the phrase "Lisztomania" to describe this hysteria.