Question about 1995 Chevrolet Caprice Classic
I tried changing the thermostat but that didn't fix the problem.
Posted by Anonymous on
Jamiem is correct. If you have recently done work on your coolant system you will need to bleed the system.
While the engine is cool, remove the radiator cap and start the engine. (do not do this with a hot engine!) As the engine warms up, the coolant level should drop twice. Each time it drops fill the coolant up again in the radiator. Once the engine has warmed up and your radiator is full shut it off and let it cool down. Replace the cap, let it warm up again and test the heat again.
Other things to check if this does not fix it is the heater control valve, the fuses (as mentioned, though I think you'd know if your blower motor wasn't working) and finally and hopefully not, the heater core itself.
Posted on Jan 04, 2013
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Posted on Jan 02, 2017
could be your cooling system plugged up, or airlocked. Usually if your heater core is getting plugged, it wont allow coolant through causing heat only when there is more pressure. If you have changed your thermostat, did you drain coolant off? If so, it may be the air lock, but it does sound like your heater core is getting bad. Do you ever hear a gargling sound after shutting vehicle off?. In some circumstances, it could also be your radiator getting bad, but you should be able to inspect the condition of that. Hope it helps.
Posted on Jan 02, 2013
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