Question about 1998 Acura CL

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I just recently changed out my thermostat and I noticed this morning I am not getting hot air. The temp gauge is no lower than what it has been in the past. What should I try?

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Let me see if I got this straight. The blower motor is blowing but when selector switch is on heat no hot air comes in from blower correct?
Were you getting hot air before you changed the thermostat?
If you answered yes to both questions then here are your options:

a )incorrect water coolant mixture ( can't use straight antifreeze)
b)incorrect thermostat or incorrectly installed
c) air in the coolant system (must be bleed according to specs.
Now if blower is not blowing at all thats a different situation. Let me know what happens.

Posted on May 07, 2010

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I really would like some clarification on that.
If your inside gauge seems to read cold for a while and then just goes hot it generally means either the gauge is sticking or much more likely the thermostat is sticking because it is about to go bad. Actually it has gone bad already if it is staying closed. Now most thermostats have a little bypass hole to let air and small amounts of water through to circulate all the time. this allows the hot water to actually reach the thermostat when it is mounted somewhat from the heat source. If that hole becomes plugged it will give the same effect since the entire engine has to get hot before the thermostat can even start opening. Once it starts opening it gets a rush of super hot water that slams it wide open.
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is it acually getting hot or is it just the gauge on the dash saying so? a quality scan tool can show you what the coolant temp sensor is telling the pcm it may differ from the gauge.

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2001 Mazda 626 ran hot this morn in 10 degree weather


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