Friends in my Hyundai Elantra 97 I appear Chek Engine and the vehicle does not work when starting, after several attempts it starts and Chek Engine is on, when the vehicle stops and returning it it works properly without the Chek Engine on, question will be tanted by the change of owner hahahajj a help to try to solve the problem thanks beforehand beforehand beforehand beforehand beforehand beforehand beforehand beforehand beforehand beforehand beforehand beforehand.