Q: Warning signs of a bad fuel pump. Like sputtering when idle. Bad fuel efficiency. Shaking when at higher speeds. Less acceleration

This may be related to many different things such as: a bad fuel pump, dirty fuel injectors, a clogged catalytic converter, a faulty O2 sensor, or a bad mass air flow sensor. Unfortunately, there are many possibilities that can cause it to sputter at an idle, shake at higher speeds, or lack acceleration. It is not possible to determine whether or not your car will make the 8 hour drive to where you are going without further diagnosis. However, I would recommend having an expert from YourMechanic come to your location to determine your engine sputter and acceleration concerns to make sure you get where you need to safely.