I have an 88 civic STD with a d15b1. Idk if the thermostat is opening because after I let it run and drive it a little the lower radiator hose where the thermostat is located remains cold(doesnt get hot). I have heat And when i changed the thermostat the heat got better, but the hose still doesnt heat up Does this mean the thermostat didn't open or is it supposed to be like that?

 

Is the temp normal on the gauge?

 

It sits in the middle and doesnt overheat but idk because its cold here

 

You put the thermostat in the right way with the dot pointing up.lol just a thought

 

you have heat...car doesnt overheat or run hot...whats the problem?

 

Its in properly and it's not really a problem I was jw because in most cars when it opens the hose gets hot

 

it actually takes a long time to get hot;
cools down quickly too.
Thank God for aluminum.