its in my sig...i just drove it and the needle started to rise but then came down slowly ..parked it with it still running need;e dropped back down to right in the middle...and the overflow bottle was filling quite fast and when i turned the car off u could hear a bubbling noise....could this also be fan clutch not coming on , water pump , or probally everyone of those....sorry for all the ?"s but its really pissing me off

jason