The check engine light comes on every once in a while on my 1994 Ford Taurus GL with a 3.8L engine. I have been having to add transmission fluid to the car, I make the levels do not go below the cross-hatched area on the dipstick.
Could this make the check engine light come on? It will come on either driving up a hill or going down a hill. I live in a mountainous area and there really isn't any flat areas.