the heating warms up but is not as hot as it should be. It takes long time to heat the interior. just changed thermostat but nothing improved. any suggestions.....

 

Could be a couple things are the heater hoses getting hot? Maybe somethings clogged or the waterpump not functioning properly.

 

yes someone told me to check heater hoses. I will do it tomorrow. the water pump was changed when timing belt was changed couple of years back.

 

How did the coolant look when you changed the thermostat?

 

well it was green in color as it should be. what else should I have noticed about coolant appearance??

 

Well as long as it wasnt brown, dirty, andmuddy lookingthen you should be fine.

 

yes it was not brown, muddy or dirty. looked clean

 

My 93 Diamante seems it is not getting as hot as it should, though when its on floor and face blowing, its very weak blowing going on, when switched to face or floor only it goes fullblast and I can feel the heat good. Always seemed to be this way though, my antifreeze is good looking aswell. Maybe this was just a characteristic of the 93?

 

Another thing I noticed in my 93, when the heat is on HOT in the red zone on the dial it blowing, but not hard, and when i turn it down to 77 or so the blower kicks in high speed all the sudden, kinda weird, why would the heat even have anything to do with the fan speed?

Could be a trait for the 93's