Object keeps moving between frames even though theres no frames in between? I'm new to Blender and I had been having some problems with animating. I animated the door at the start and then I went forward about 30-40 frames I then started animating the door again. When I play the animation, there were movements between the start and the end of the both animation even though there were not any frames in between. 


Look at the 'Door:Wood' section on the dope sheet and you can see there is blanks between the 4 frames and yet the door is moving during the blank space.
Even though you have no keyframes on frame 178, there are keyframes for LocRotScale before and after. 

so frame 178 is in the middle of the interpolation between two keyframes with different values.

To have the door steady select the previous keyframe press T and set the interpolation to Constant.