MMAFIGHTER121
Dedicated LVC Member
ok, before i replaced my thermostat I was having an issue where heat would gradually climb until it was overheating, i'd turn on the heat full blast for a minute or two, then sometimes suddenly the temp would drop back to correct operating temp and sometimes it would more gradually fall back down, then i could turn the heat off and for the rest of the trip it'd run just dandy at the right temp. It also seemed like i was going through a lot of coolant having to refill the coolant tank a few times this month, but i could never find a single leak or puddle under the car! yesterday i finally got around to replacing the thermostat (my guess it was just sticking) and when i drove it to work this morning it looked like things were going to be fine, but sure enough after it was hanging out at the proper temp for a few minutes it began to climb up into the overheat range, now it began to overheat more slowly than before and when i turned the heat on it cooled off quicker than before; but i would like to avoid this altogether. Any ideas on what could be causing this??