Take the car to a repair shop and have them read out the failure codes via the OBD2 connector under the dash. The codes will tell you what parts of the system need attention.
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.
If there is no check engine light illuminated, start with the basics like a good tune up.
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.
Replacing the water pump will not cause the check engine light to come on. Either it is a coincidence or you have accidentally disconnected a wire or damaged a sensor somehow.
Check your gas cap.....My check Engine light always comes on if it is loose or not on at all.
The idle is not adjustable, it is computer controlled, which means the idle is not the problem. Look for a check engine light.
Have vehicle scanned to determine the problem
Your Lumina 2001 engine light might come on while the radiator fan is working because the fan is turning too slowly, is damaged, or is not cooling the engine correctly.
The car will start and run poorly in the limp mode and the check engine light will illuminate.
That is the check engine light.That is the check engine light.
No, oil level does not cause the check engine light.