Changed oil and spark plugs in my 2000 volkswagon jetta and now the check engine light is on any ideas why its on
I don't believe the oil change would cause the problem. The only thing I can think of that would cause the engine light to be ON is maybe the spark plug gap isn't correct. That may cause delay or pre-firing the fuel in the cylinder.
But, there are many emission sensors in the car that will make the engine light come ON. Not to mention the big list of trouble codes for the engine light. The engine light code will give you a big clue of what's causing the problem.
Best way to find out what's going on engine light is to have an auto-parts store hook up a engine code reader and tell you what the code means and the problem. Most auto-part store will do this for free. If you get a codes like P0300, P0301, P0302, and etc. Then the spark plugs need to be look into.
Hi Robin white, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?
Which light on what car?
×