I have a stubborn porch light in the home I just purchased. I have to "pump" the light switch (back and forth: on and off) several times before the light itself will turn on. I thought this had to be caused by a worn out switch that was not properly making a connection and completing the circuit, so I replaced the switch. Much to my dismay, I discovered upon changing the switch that I still have this problem.

My next step in seeking out the source of the problem was going to be removing the light fixture itself to test for proper connection, but I thought I'd ask the TOH community first, in an effort to help set me on the right path of diagnosing and correcting this problem. Has anyone out there experienced something like this before? And if so, how was it solved?

Any help would be appreciated.