Paul Kassey Posted February 12, 2008 Share Posted February 12, 2008 This seems strange.... I have an 04 RX330 with 90K miles.. this winter the heat is acting strange. There is no heat coming out of the vent when the car is not moving, even though the temp is up to MAX. In fact cool air is coming out...... I soon as i start to move hot air comes out of the vents... does not matter if i select floor vents or window defroster or vents... Any clues... ??? i have never seen this... thanks Great forum... BTW Quote Link to comment Share on other sites More sharing options...
Grumpa72 Posted February 13, 2008 Share Posted February 13, 2008 I had similar issues in another car. My fix was simple. The coolant was so low that it couldn't circulate through the heating system adequately when the car was moving. Don't mean to give you the idiot treatment but have you checked your radiator AND your coolant recovery tank for level? Gary Quote Link to comment Share on other sites More sharing options...
wwest Posted February 14, 2008 Share Posted February 14, 2008 I had similar issues in another car. My fix was simple. The coolant was so low that it couldn't circulate through the heating system adequately when the car was moving. Don't mean to give you the idiot treatment but have you checked your radiator AND your coolant recovery tank for level? Gary It is also possible to have a vapor lock, air bubble, in one of the hoses to/from the heater core. Quote Link to comment Share on other sites More sharing options...
Paul Kassey Posted February 19, 2008 Author Share Posted February 19, 2008 I had similar issues in another car. My fix was simple. The coolant was so low that it couldn't circulate through the heating system adequately when the car was moving. Don't mean to give you the idiot treatment but have you checked your radiator AND your coolant recovery tank for level? Gary It is also possible to have a vapor lock, air bubble, in one of the hoses to/from the heater core. that's a great idea... no i have not check the coolant level... nor the hoses.!!.. it has not been serviced for a while so i bet that could be the problem.. thanks i will let you know what happens.. thanks for the tips... great forum.. :) Quote Link to comment Share on other sites More sharing options...
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