So I have a 1998 Caravan. The passenger side window only works occasionally. Mainly when it is hot out; 32 degrees or higher, but not below that point. Any idea what that would indicate?

 

The motor is headed south or the side tracks need a clean and lube. Throw the switch and measure for 12vdc at the motor connector. If it's there change the window regulator assembly. In the mean time try slamming the door shut with the switch thrown.