Bubbling Noise

[Makavelli]

Hey experts, here's one for ya

This mornin when I fired up the Sup, as I backed outta the garage I heard a sound that resembled water bubbling under the hood. Don't know if this is related, but when I first got in the car I thought it smelled funky, like mildew or wet carpet. I figured maybe I was imagining it, but then I hear the water noise, so I dunno.

Yesterday I had 2 temp spikes. One after getting gas, when I turned on the engine. Though it didn't reach HOT, the temp guage went to about 3 quarters to the top. On the way home yesterday, for no reason while driving in bumper to bumper traffic, the temp guage went to just over halfway. (It normally sits at a bout a quarter) then went back to normal.

Is my car possesed by gremlins?