Question about 2001 Ford Explorer Sport Trac

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2001 sport track onlt heats when traveling, the thermostat is good and the heater core is good, cold air coming out at an idle

Fan blows cold air at an ldle, the heater hoses are both warm, so the core is good, the thermostat was just changed.

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Water pump is bad

Posted on Jan 18, 2013

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Why does the heater blow hot air when I drive after its been idling for 15min and not during the idle when it reaches the 100 Temp?...(it blows cold air in idle)


Firstly, a thermostat that opens quicker will not give you better heat. Your heater core may be partially plugged causing a low flow issue. Another area to check would be the water pump impeller for corrosion or slipping on the shaft. Does the vehicle's cooling system operate well otherwise?

Jan 27, 2015 | 2002 Pontiac Grand Am

1 Answer

Heater blowing cold air and reaplaced thermostat and water pump and heatercore hose and still blowing cold air ?


You heater core is probably clogged up with contaminates! If the water is not flowing through the core for the fan to blow the heat off the core you will not get heat!

Jan 09, 2013 | Cars & Trucks

1 Answer

I have a 2001 dodge stratus and the heater only blowed cold aire now we changed the thermostat and it blows warm air when idling but when driving still blows cold need some help please


where did you buy your thermostat? if you bought a fail-safe style thermostat it could have been no good before you even put it in. also is your tempeture gauge coming up to operating temp?? if it isnt your thermostat may be stuck in the open position allowing the coolant to circulate freely and not actually warm up. i would also check the lines going into the heater core. if one line is hot and the other line is cold than your heater core is probably in need of a flush or replacement.

Dec 01, 2010 | 2001 Dodge Stratus

1 Answer

I have a heater problem. No warm air comes out of the heater -- all it blows is cold. I took it to a shop today and they thought it was the thermostat so they replaced it. Turns out that wasn't the...


I think they told you the heater core is bad, being plugged up or so corroded that no heat is being conducted from the coolant to the core's metal. Replacing this is not simple, usually requires taking the dashboard out. I would take it to a shop experienced in this type of repair, such as a place which does exclusively air conditioning and heating, as opposed to a dealer. If you pull out 2 or 3 dash assemblies a week you get good and fast at it. I would think that any mechanic worth his salt should have figured out the real problem before he swapped the thermostat.

Oct 18, 2010 | 2001 Ford Explorer Sport Trac

1 Answer

Why is the heat blowing cold air but at a really high idle it blow hot air for little period of time.the temp of the engine is 195degrees. all the fan controls and the temp control is in the hot position


you could have a couple things going on. possible low coolant? most likely cause as i assume you have checked coolant level would be heater core restricted. to fix this you remove heater hoses and back flush heater core with water. if this does not do it you may have a water pump not circulating at idle but this usually comes with vehicle running hot at idle.

Feb 16, 2010 | 2001 GMC Safari

1 Answer

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.

Jan 17, 2010 | 2001 Toyota Corolla

1 Answer

HEAT BLOWS COLD AIR WHEN IDLING ONLY GETS HOT WHEN START DRIVING


You have still got air in the system.Remove the Feed back pipe from the header tank and wait for all the air to come out while the engine is running making sure you are toping up the header tank at the same time Dont allow header tank to run dry while doing this.Good luck

Jan 16, 2010 | 2001 Chrysler LHS

1 Answer

Started out with cold air coming out the vents


I'm no 'expert' but it sounds like possibly 2 different problems. Your heat comes from warm/hot coolant circulating through the heater core, and the fan blowing air through/over it. If your thermostat is not opening the coolant won't circulate. Thermostat is a not too difficult or costly starting place. No air flow leads me to think you have a blower motor issue, perhaps start with the fuse. Hope this helps.

Dec 04, 2009 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

Just changed the thermostat in my 2005 ford sport track.. but heater still blows cold...gages arent showing that is over heating and can i still drive??


The usual problem after changing a thermostat, is an air lock. Bleed the air out by loosening the return hose from the core and carefully move the hose a little to allow the air to escape

Nov 12, 2009 | 1998 Ford Explorer

1 Answer

Heat blows cold when car is idling


You have an air pocket in the cooling system. To bled it out you will have to park vehicle on an incline or jack up the front end untill the radiator cap is higher than the heater core. The remove radiator cap and run engine until warm then hold rpm to about 1200 rpm's and top off coolant level until you have no more bubbles.

Feb 02, 2009 | 2001 Mercury Villager

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