[Joe K]

I noticed about a week ago my temp gauge fluctuating a bit when driving, I assume it was the thermostat and went ahead and replaced it (which was a royal pain on this car) after replacing it the fluctuation didn't stop, in fact is seems a little worse now. I have noticed that no matter how much I bleed the air out if I try again a few minutes later there's more air. Also, when I had the car in the garage I let it run until it almost over heated and shut the car off (to stop it from overheating) and heared a periodic gurgling sound coming from the coolant resevoir which I could recreate by squeezing on the the hoses.

Any suggestions or ideas as to what it may be and how to fix it?