Question about Cars & Trucks
Do you have heat when you rev it up? You could have a blocked/clogged heater core. Try back flushing the heater core in both directions to try and clear any deposits. Also if there has been any kind of stop leak added it can clog heater cores right up. Also verify that temp blend door stays in proper position.
Posted on Dec 11, 2014
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Posted on Jan 02, 2017
if the heater core is bad, it will leak or not flow water. even tho you can "hear" the blend door working, it may not be actually moving inside the box. check to see if the actuator is connectd to the blend air door. You may be hearing the actuator moving but not the door.
Posted on Nov 22, 2008
If ythe heater core is not bad then I would replace the thermostat, this will stop the warm coolant running up to your engine go to the heater core.
Posted on Feb 01, 2009
is this a problem w/ the interior vents? maybe stuck venting in outside air rather than from the heater box? did the heat only stop working after the radiator/hose install? if so, then you probably have a big air pocket stuck in the heater core.
Posted on Sep 30, 2009
Why was radiator replaced?Did it have heat before ? If it was plugged, the heater core may also be plugged. Try flushing it with a water hose in both directions. I dont know why the botton radiator hose would be cold, the radiator should be a uniform temp and the air coming through the radiator should be HOT, when the engine is at operating temp. What condition was the old coolant? if it was rusty, the water pump may have lower flow than normal.
Posted on Nov 19, 2009
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