Check the engine. ===================================================== There is a problem with something that effects the emissions of the engine You need to have the vehicle scanned for any trouble codes to help diagnose and then repair the problem
A basic tuneup includes changing the spark plugs, wires, fuel filter, air filter, changing the oil/filter, check fluid levels, and perhaps check the engine codes.
Check the codes with an OBD2 scan tool.
HAVE AN AUTO STORE OR SHOP HOOK UP THE OBD2 SCANNER TO SEE WHAT CODES ARE
Check the choke first to insure that it is working properly. Next check the computer codes for any possible issues that may be shown.
If the Check Engine light is lit or has lit, that means the computer has detected a fault in either the performance or emmissions system of your vehicle. Have the OBDII terminal scanned for the trouble codes.
Plug in a scan tool.
If you have the codes read and repair what is wrong with the vehicle the light will go out on its own, or can be reset by the tech.
Have the codes read.
take it to auto zone and ask them to check and then clear the codes or remove the positive battery cable and press the brake pedal for 30 seconds.
you check the system for trouble codes.
Check the computer for engine codes. Have a tuneup: new plugs, wires (if equipped), fuel filter, air filter. Hopefully that will help, if it doesn't you'll probably have to get it checked somewhere. Could be a failing fuel pump, or clogged injector. A vacuum leak or faulty sensors somewhere.