It means that the computer has detected a condition and requires that you use a diagnostic scanner to find out what's wrong. It's foolish to speculate, especially when the computer can tell you exactly what's wrong.
An electrical fault, check the spark plug, distributor and leads.
Check that your air sensor is plugged in/connected to where it should be - this is the most common reason for ETS light coming on
Low catalytic converter efficiency.
i unhooked the battery...(both terminals)
Your check engine light should come on. You will have poor performance from the engine, no get up and go.
Several things could be making the Lumina growl. Check the belts and pulleys on the front of the engine. Check the engine mounts as well. Either of these areas can cause the problem of the growling noise.
Check the ignition control module...notorious for this problem
common problem with 1998 mystique check engine light on
If there is no check engine light illuminated, start with the basics like a good tune up.
That depends entirely on the reason why the check engine light is on.
If you live near a vocational school or career center, you might check their Automotive department. They might be able to help you out for a donation to the class.
1993 Chevy lumina: check all vacume lines for leaks and or splits around intake.AnswerIf you are not actually moving (just revving up the engine), it is normal for the engine stop at 4000 rpm. (governored)