Wait a minute, is that what that is?? I have been trying to figure out what that damn clicking was for about 2 years. I thought it was my fuel pump, i didn't know if i was hearing from the front or the back. Hey try this, if have the car on, slowly turn the key toward the off position until the electronics turn off, you will see the guages go dead, but the car will still run. Do you hear the clicking then? When I do this I don't hear the clicking anymore, im wondering if that is it.