Question about 1989 Buick Regal
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Posted on Jan 02, 2017
The heater in your car depends upon a flow of hot coolant going through the heater core in order to get hot air into the car. If the heater core is partially plugged, it will restrict the flow. If you have a head gasket that is putting exhaust into the cooling system, it will eventually get into the heater core. When this happens there is no coolant in the heater core to make the air warm. If the water pump vanes have corroded away the result will be very poor coolant circulation causing the heater to not blow hot air. If your car is equipped with a heater control valve that is not functioning properly, the coolant flow will be restricted. One or a combination of these factors is likely the culprit in your case.
Since you state the 2 things you ruled out, that leaves only the water pump. Is the car running hot? The thermostat may be sticking as well... but im leaning toward the pump.
Posted on Jan 21, 2009
SOURCE: No heat in a 98 Mazda Protege
See what your rad fan is doing with setting at heat, not defrost. It should only come on when temp gauge gets up around operating temperature.
Posted on Jan 24, 2009
Since your blower is working and it is a heat issue,thats where we'll
start,First thing is have you checked the coolant level in the radiator when
engine is cold,make sure it is filled to top,next verify you have coolant in
reserve ,Start your van and get it up to normal operation temperature,If your
heat gauge on the dash works correctly it should be 190 degrees,Now lift the
hood and locate the two heater hoses going into the heater assembly at the fire
wall,Both hoses should be hot to hold on to,if both are hot and no heat inside
your problem will be the blend air door in heater assembly.
if neither hose is that hot you need to replace the thermostat in the engine to get it up to 195 degrees.
if one hose is hot and one is luke warm then the heater core is blocked and to blame. hope this helps you.
Posted on Jan 02, 2010
SOURCE: No heat/defrost 01 corolla
Sounds like you have air trapped in the heater core when you flushed the heater core. loosen the upper most heater core hose and run the engine untill coolant seeps out. Wait until the coolant has reached running temperature.
Posted on Jan 18, 2010
SOURCE: 1998 Saturn SL1 - I
As both hoses from the heater core are hot, there is no need to replace the heater core.
The problem will be in the heater control under the dash. I have no experience with Saturn, but I am responding to your problem so as not to remove the heater core.. That would be wasted time and money. The heater, A/C mixture control is the problem.
Someone else will need to guide you through the rest of the way.
Sorry i could not lead you all the way through.
Posted on Nov 17, 2010
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