I have a fuse that keep blowing and the pontiac dealers can't seem to find why it keeps blowing. the fuse blows about every 2 to 3 weeks. When it does blow it makes my car jerk and clunk when it shifts gears as well as turns my traction conrtrol off and the engine light on. this fuse controls the mass air flow, map sensor, and 02 sensors yet they can't find whats cause it to blow....there has to be something someone knows.... they don't blow this often for no reason... HELP!!! PLEASE!!!