It is possible it is one of the speed sensors.
On the open road or freeway with mild inclines.
maybe the clutch
Possibly, you have a broken timing belt.
No, there should not normally be any engine surging while driving following installation of a new fuel pump.
mobile phones
The correct answer is : drinking and driving
Falling asleep or losing concentration due to boredom. Take frequent breaks on long jouneys.
Common causes could be a power surge or overheating.
Your throttle valve switch (position sensor) is bad and need to be replaced.....this is located on the side of the throttle chamber. You can get this from Advance Auto for $60 and is easy to replace...
Your transmission seems to be slipping, serious problem!!! See mechanic ASAP, you don't want to get stuck on the freeway & can't move, not a good situation!
Drinking while driving
Oil in the distributor.