I just replaced the heater core with no problem now i have to issues. First when i turn the ignition switch on the brake lights will burn. At first i thought i may have had the metal bracket pressing the brake pedal to the keep the light switch on but that is not the problem. I have no idea what is causing them to burn with car is running. Also my other problem is my gas pedal is not resposnive when it is is presses. There is no engine reaction what so ever