Hey i have a 87 turbo and for some reason i have no heat. I recently replace the thermostat and it worked for like a week. But now the temp gage goes half way up (normal). So i checked the fluid thinking maybe it was low. Good to go on that.. Im pretty sure the heater core might be stopped up or something. I was wondering if there maybe was something i was overlooking like the heater controls or something.....thanks