alright i just changed my thermostat, and befor that i had carbord infron of my radiator. while i drive hwy the temp gauge reads normal but when i come to a stop or drive city wide, my coolant drops?

 

yeah i just drove my car and it still drops in temp on the gauge and the vents.

 

Sounds like thermostat is stuck open, at highway speeds the engine is working "harder" so coolant heats up, airflow and the rad fan will keep temp. at "normal", at city speeds there is less steady load on the engine, if thermostat does not close, engine coolant will cool down. 94

 

should i get a another new one and hope that one was defulty

 

Check your rad hoses, if both are the same temp. all the time, thermostat is not closing, pull it and replace it, make sure it is installed properly. 94

 

lol well it only fits in one way. ill check today, its cold here in mn

 

Spring towards engine, jiggle pin at the top. 94

 

well upper rad is warm luke warm, and lower is cold.
i have radiator cap off and blower motoe turnned way up.
i just replaced the head gasket on monday. and im almost 100% sure its not that.

 

both hoses to the fire wall are warm also.
i had my car ideling in this MN cold for about 45 min and it never touched the C on the gauge. although there was luke warm air cominf from the vents. nothing more nothing hot!

 

maybe get a hotter thermostat.

 

i dunno if thats it, see my headgasket went bad and it over heated, bad coolant leak, i noticed it in the exhaust, and had a hard time starting the car in the mornings, now thats all fixed. but heat is now an issue, just sucks cuz i feel like a teenage girl, i had to much, now i cant get enough, lol.

 

take the stat out and see if it is open at all. you can put it in a pot of hot water on the stove and watch it open.. then make sure you bleed all of the air out of the system.

 

The problem here is not is the thermostat is opening, but is it closing, the symptoms, [low engine temp. and low heat] indicate a thermostat not closing, or, as mentioned, not closing at the correct temperature, too low. 94

 

well ill replace it again