Hi I have a 97 Max SE just got it back in March and the service engine light came on. I took it back to the dealer and they put it on the machine that tells whats up.. The dealer said it was the vent control valve and the Vac sensor. And that was going to cost me 355.00 to replace (Which I dont have) I was wondering if anyone new where they were located on the car and if it is hard to change them? Please Help