In terms of changing to a different temperature thermostat, I don't know
that you really want to do that, and I dare say certainly not in newer model
But on the (VERY GOOD) possibility that the aging thermostat is keeping the
car from putting out anything near to the heat it should be putting out, by
all means, put in a new one. Even if you put in a new one at the proper
temperature for this car, it will probably work much better than the old
Hope this helps.
There's a lever that chooses whether you're heater is getting air from
outside the car or inside the car. When it's cold and you're just
starting out, it will generate heat faster if you choose the "Air from
Inside" option. Then switch to "Air From Outside" once the engine
Hope that helps!
PS I just got my car washed yesterday, then it snowed!
If the heat output has dropped off over the years you might want to get
a system flush done, new coolant put in and a new thermostat. I know
locally there is a rad shop that does the complete chemical flush for
$39.95 (Canadian). Got my 91 Scoupe done in the fall and I went from
having no heat to having to turn the fan off on some days cause it heats
up just like it was new again. I just figured why bother putting a nice
new thermostat in with possibly crummy old sludgy coolant and if I was
putting new coolant in I might as well make sure the system is clean
Did you try blocking off airflow to half the radiator? I have done
that over the years to many cars when It gets below freezing. The
greater the temp difference the less airflow required to achieve
suficient cooling capacity I have seen days here when I could not
get the car warmed up enough to close the thermostat. That's assuming
that the temp needle barely making it 1/2 way to it's normal operating
point indicates that the bypass channel is keeping enough coolant
flowing to hold the temperature at that point.
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