burb

3 things, one ise rear window defrosters dont work on barn doors, a couple of the pushouts are stuck in. im thinking burnt , replace? #2after sitting for a couple of days it seems like something in the drive train or fuel or ign is going out. it just kindof stops or misses.also brakes have been worked on three years in a row last time new front rotors now seems warped again, are rear brakes not engaging? thanks