minimal heat even when car is warmed up
- Thread starter 2fastnotch
- Start date
LiquidGT
Member
LiquidGT
Member
They dont make anything hotter than a 195 for a mustang, its gotta be stuck open.
P.S. Are you saying you bought the same car back 3 times? So did the previous owner put a 180 back in?
P.S. Are you saying you bought the same car back 3 times? So did the previous owner put a 180 back in?
I assume the rad is full of coolant.
Feel the heater core hoses when the car is warmed up. Are both very hot?
If so, i'm willing to bet you have a blend door problem
Feel the heater core hoses when the car is warmed up. Are both very hot?
If so, i'm willing to bet you have a blend door problem
NKau
Founding Member
These would be my first guesses as well. If neither is a problem, then I would suspect that your heater core itself is actually plugged. Had to help a friend flush one in a mid 90's blazer when it got cold here last week, and it made all the difference in the world.
Take the HVAC controls out and see if the HOT/COLD cable moves freely and see if it actually moves the door.
I have the same thing happening with my car, only I havent owned mine 3 times.
I thought it was my heater core and disconnected it. Now that I think about it, my temp gauge gets about halfway between cold and hot when sitting and idling, then goes down to about 1/4 way up when I start driving again. I'm thinking this is due to the motor speeding up and the water pump pumping faster. Knowing this, I would be willing to bet that the thermostat is stuck open. I may swap mine out this weekend and see what happens.+1 on the blend door but just as a piece of info the last 2 stangs I bought the previous owners had put the thermostat in backwards (most housings won't let you put them in backwards but these will) they will always run cold if they get stuck in backwards, just something that had happened to me 
thought if all else fails its something else to check at least.
thought if all else fails its something else to check at least.
black87ttop
Member
clutch fan will not make it run cold, it would overheat if anything.
Oh and you the you probably have a 180* thermostat comment is bull *****.
we put a 160 in my buddys 91 and his heat is as hot as stock.
personally i wouldnt put a 160 in , but it was his car.
a good thermostat for our cars is a 180, car stays a little cooler without affecting the engine.
Oh and you the you probably have a 180* thermostat comment is bull *****.
we put a 160 in my buddys 91 and his heat is as hot as stock.
personally i wouldnt put a 160 in , but it was his car.
a good thermostat for our cars is a 180, car stays a little cooler without affecting the engine.
Check the blend door..I had this same problem...no heat but the hoses were warm. Flop the glove box down and look in at the blend door with a flashlight. See if you can open and close it by hand and then see if when you turn the dial it opens and closes. With mine the door was stuck and my dial wouldnt turn it, but then I opened it by hand and magically had heat. I have a 160 t-stat.
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