i would definately do all the basic tune up stuff to it, like plugs, wires, filters etc. whoever said the car was fine with the check engine light on should of made sure the car was fine, and resetted it if all was ok. i bought a 90 rs and after a week or two, the car started having some serious problems. i still need to fix alot of stuff, but money is real tight. so i know what youre daughter is going through. good luck.