Check engine light

Look under the dash where the steering wheel is and you'll see a pin connector. Take a paper clip and insert it into the two upper right connectors. Make sure they're in good. Then turn the ignition ON with the engine OFF. The Check engine light will start to flash. It will flash Once. And then Twice to indicate a "12" which is diagnostics mode. There will be a short pause and the light will again flash any codes stored by the computer. When it begins to flash a "12" again then the diagnostics is complete. You can usually look up the internet to find what they mean.

To add on to what he was saying about checking the code you will prob. Two than two again for about thourty five buck you can replace the throtle postion senser they go bad alot it sounds like it is reading a problem with the volts do be surprised if it starts to idle high or stalls out and just starts idleing rough it is oly two screws that hold this on but it is in a hard spot.I just changed mine last nite it took about ten mins.