Had radiator flush after long period of not changing antifreeze following this the heat would only blow out lke warm air both rear and front. Since this time I have had radiator flushed and thermostat replaced without successful cure of the problem.About a week later started to ver heat brought back to dealer and was afraid I hab blown head get so preformed a pressure check which was ok not leak in gasket .He did find leak around thermostat and repaired . No more over heating but still no heat. I do hear water like sloshing sound coming from under dashboard since this problem started. Could it be the heater core and if so what is a reasonable price to do repair work. The car has 160k miles Frustrated and cold
The whole system is very simple. There is a valve that opens and closes on one of 2 hoses that come from the engine. If the heater core is not getting water, the valve itself is the problem. If they did the flushing properly they should have checked to see if that valve was fully open to allow the flushing process to clean out the heater core too. If there is sloshing in the heater core (check it by listening under the dashboard when heat is turned on) then there is AIR in the core stopping the antifreeze mix from going through its coils. Remove the heater switch on the heater hose and check it for proper action first. Next have a compressed air test of the heater core to see if it is clogged. If you fix this, try to do regular maintenance on your beautiful MDX!
SOURCE: Have a 99 acura tl 3.2, the coolant level drops
sounds more like you vents will only open the vent on the air ducts when its at full....
SOURCE: 1996 Acura TL Heater blows cold air when stopped
the heater core could be clogged you might again check your coolant level just to be sure its full
SOURCE: 2006 Acura MDX - A/C runs but not cold
It sounds like you are low on R134 freon, you might have a leak or maybe it just needs a recharge.
SOURCE: Oil leaking into coolant -- not head gasket
check the transmission condenser or oil cooler built in the radiator..
SOURCE: I have a 98 acura tl with 230,000 miles, sometimes
It sounds like low coolant to me if it is not leaking out anywhere it is possible that you have a head gasket problem. I would suggest pressure testing the system to see if you have a leak or if it holds pressure. if you do this yourself be sure not to exceed 15 psi.
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