I have a 1996 Taurus GL 3.0L OHV vulcan engine....I've noticed that the
heater doesn't provide warm air like it used to last winter, so I am
changing the thermostat tomorrow....the stock thermostat opens at
192 degrees, but I want warm air in the cabin sooner, so I bought a factory
thermostat that opens at 180 degrees....should I be replacing the thermostat
with one that is 192 degrees or am I OK to use the one that opens at 180
degrees?? Am I doing any harm to my engine by using one that opens sooner?
Actually i think you will find that by changing the thermostat to a
different temperature range the coolant WILL increase in temperature. not by
such an amount that you will notice a better heater however but nonetheless
i think you need educating "BOB".
having said that its more likely as the previos poster mentioned that your
heater matrix core may be partially blocked providing your cooling system is
Heater matrix core..... wtf is that? Must be some kind of new terminology
I've never heard of.
It is very clear that the OP doesn't have the first clue about how his
cooling system or heater work. Like I said he needs to learn that before he
starts throwing "wrong" parts at it. Otherwise he will only make a bad
The first thing he needs to do is make sure the engine is reaching operating
temp or 192 deg. Putting a cooler stat in will not allow that to happen.
Second he needs to make sure he has good coolant flow through the heater
core, I've ran into several Taurus's with plugged cores.
If he still doesn't have heat he's got a problem with the blend door not
closing all the way or some other air flow problem.
It's pretty simple stuff but apparently over both of your heads.
Use the high temp stat - a colder stat will give less heat, and the
heater gets full flow even with the stat closed.
You likely have a restricted heater core - or possibly a bad heater
valve or slipped air mix control.
It could be more than what you think. The blend door may be stuck
or not opening all the way. The heater core could be plugged.
I would have your heater core flushed. Now as i recall, some
ford 3.0's of that vintage were prone to engine block rusting or such
and had some problems. Keep in mind if you power flush it with chemicals, you
might be looking at new freeze plugs or a heater
core in the future. Its a roll of the dice. And either of those is going
to cost you.
You might pull up "Alldata" and check. SO your car could need a angioplasty ;)
You need to find the cause and not bandaid it. Every taurus 3.0 i have owned had
more than enough heat. How hot does your temp gauge
say it is?
There is no advantage to masking a problem by changing thermostats. You are
doing yourself NO FAVORS by putting in a colder thermostat.
Figure out what is wrong with your cooling system and/or heating/venting
Are you sure that you coolant level is filled properly? If it is low you
wont have proper heating in you heating system, due to lack of heated
Hey... it just occurred to me what you were really saying there...
The heater circuit bypasses the thermostat. As you would know if you paid
attention... the heater hoses warm up long before radiator hose does.
You could try a reverse flush...
thanks to everyone except Bob....this newsgroup is an excellent way to
"educate" oneself. The experience that is shared is a limitless weath of
again, thanks to everyone....except Bob
HEy...I do that too sometimes. Goes with the territory! Get a skin!
The stock unit is 192 by the auto engineers for a variety of reasons... and
the number signifies the nominal coolant temperature.
Lower temps promote sludge in oil and less than optimal emissions efficiency.
the fact that the heater pipes are fed bypassing the thermostat is
immaterial, it simply means they will be fed warm coolant before the
thermostat actually opens, and by replacing a thermostat with one of a
different temperature range then the coolant in the head and block, which is
where the heat comes from will not be the same since it will transfer to the
radiator at a different temperature.
hope that is simple enough for you bob.
by the way europeans refer to the heater unit as a matrix, maybe you havent
heard of this terminology bob, but hey, you surely dont know everything do
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