Car Loses It Power While Driving, What Do I Do?

If the Batt light came on it is possible that the alternator has gone out!
The battery supplies power for start up then receives a charge from the Alt, The Alt after start up takes over from the battery and supplies electrical power to the system. If the Alt goes out or is very weak, the Battery picks up more and more of the load and will die in a short time. Have the Alt. and battery checked. Before checking the battery charge it for an hour or so then check it with a load tester. Most part stores can check it without charging any fee if you bring the battery in to them! They can also charge it, at least most of them can.

The Alt. can be checked two ways, "in" or "out" of the car. If you pull it off the car, a lot of parts stores can check it as well! On the car would mean checking it with the proper tool for the job that most people don't have in their home garage. If the car can be towed to a local repair shop they could do the check and repair it if you are not mechanically inclined! If you know a friend that has an "Ampmeter" then you can check it without going any where and do the work yourself, Again if you are mechanically inclined!

Good Luck!

Well, mine is a 2003 did the same thing to me 4-5 times over 6-8 months. It finally died on me without restarting yesterday. The shop is saying the "control block" on the passenger side was fried. The block has several relays with one to the fuel pump. $500 to fix, not as bad as I was thinking.

Hope that helps but get it fixed because it will continue and put you in a dangerous position.

Well my honda prelude died on me when I was about at redline in second and the car just died and I would not start up even when I tried to jump it. The car would bog before vtech every once in a while I don't know if that has any thing to do with it. I have completely no power to anything, no nothing. Not even with a new battery.

Vectra x reg 1.6i 16v, after 20 mins of driving car loses speed. Changed waterpump, cambelt, full engine service, throttle body, bypassed fan to stay on all times, no lights showing on dash. Could it be potentiometer located on throttle body, or foot pedal sensor, or something else ? Please help me !