Hi,
Welcome to the forum.
Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html
Can you tell us or post a picture of your motor driver please?
Can you please post a copy of your circuit as it is with one DHT and one motor driver, in CAD or a picture of a hand drawn circuit in jpg, png?
How are you powering your project?
What motors are you using?
Thanks.. Tom.. 