Use code tags for code!
I assume you're using an Arduino UNO as you didn't stated otherwise.
Using these connections:
GND==> GND
SDA (tmp102)==> A4
SCL (tmp102)==> A5
ADD0 ==> gnd
3.6v to 3.3 v (arduino)
But always the same
here is my code :
//Arduino 1.0+ Only
//Arduino 1.0+ Only
you may have damaged the sensor as any input voltage above 3.6V is outside the Absolute Maximum Ratings. The Arduino Wire library activates the internal pull-ups for the I2C signal lines so the chip gets the full 5V as you don't have external pull-ups installed.