i have a feeling it might either be an air bubble or a broken pump, sorry in my last reply i said pump instead of thermo. i installed the thermostat with the arrow facing up. we flushed the system today, no large particles came out, when i put new coolant in, and ran the car, the needle jumped to certain spots until it hit 3/4, (possibly an air bubble moving around?) another thing, the fan runs constantly. even when the car is off. i know some cars do this on shut off at certain times. my dads 325 does |