Question about 2001 Lexus RX 300

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When turn on heater, cool air only no heat ...why?

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Change the thermostat in it,

Posted on Dec 05, 2012

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Blows cold air turn heat on


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    07 Tucson heater blowing cold air - Hyundai Forum - Hyundai ...

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    Dec 16, 2009 - I have a 2007 Tucson, when you turn on the heater it only blows hot air... Join Date: May 2005 ... a low coolant level will exhibit the first stated symptoms of no heat/low heat at idle and increased heat at cruise due to an air ...

    Denlors Auto Blog » Blog Archive » Car Heater Blows Cold ...

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    Oct 10, 2009 - When a car heater blows cold air, there are several possibilities that should ...... On my Dodge Neon when I turn on the heat it blows out cold air.

    Heater blows only cool air...even w/ defroster on : Buick ...

    repairpal.com > Problems > Buick > LeSabre
    ... Cadillac, Chevrolet, Chrysler, Dodge, FIAT, Ford, Geo, GMC, Honda, Hummer,Hyundai, Infiniti, Isuzu, Jaguar ... I'll turn up the temp on the dual control to get heat,

Jan 28, 2016 | 2005 Hyundai Tucson

1 Answer

Air condition


What's Wrong With My Car's Heater? - Popular Mechanics

www.popularmechanics.com/cars/.../whats-wrong-with-my-cars-heater-1...
... hot air you need. Here's what to do if your vehicle is struggling to turn up the heat.... In the recently chilly mornings I've noticed my heater isn't putting out hot air. ...Surely it's not saying it won't play the DVD because 1 doesn't match Free. And, yes, it.... The Nurburgring Nordschleife should need no introduction. Nearly 13 ...

How to Fix a Car with No Heat (Easy) - YouTube

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https://www.youtube.com/watch?v=-XjXTVJhFLM
Nov 21, 2014 - Uploaded by ChrisFix
Car not blowing hot air? This video will show you how to fix yourcar's heater whether it is your heater ...

Car Heater Not Working - Troubleshooting Repair Tips ...

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https://www.youtube.com/watch?v=aCkVjiPZA4o
Oct 1, 2013 - Uploaded by WiseAutoTools
When troubleshooting to try and repair the car heater, check the coolant ... If a cooling system is full and there's still no hot air coming from the vents, .... Hi I have 2001 ford expedition and theheater just blows out cold air and ...

Dec 29, 2015 | Cars & Trucks

1 Answer

Why is it blowing warm on and off on the driver side and blowing cool on the passenger side?


Here's is a little background and a couple of thoughts. Turning to the background, first. The heater/air conditioner system in your 02 uses the same set of ducts located in the instrument panel. In turn, those ducts are linked to what can be considered miniature version of the cooling system in the engine compartment (yes, this is a greatly simplified version). The whole system, in fact, is run off the main heater/ac system, however, it has a separate series of controls so that it can function properly.

When you dial a temperature, a signal is sent to the heater/cooling system telling the system to open a series of baffles, directing a flow of heated or cooled anti-freeze/coolant to the proper "radiator" behind the face of the instrument panel. In turn, the fan system activates a series of doors behind the instrument panel so that the flow of air is directed through the "radiator" and into the passenger compartment. This is essentially the heater/cooling system work.

Now, you say that the driver's side is hot, while the passenger side is cool. What has happened is that the flow of heated coolant that is supposed to heat the passenger side of the duct system is blocked. Since there is no heat to warm the air that is flowing past the fins of the "radiator," the flowing air remains cool to cold, depending on the weather and ambient temperature. The result is that one side of the car remains cool. And, since the other side of the "radiator" is normal and the air is heated, it is warmed.

That is the most likely explanation for this.

Another possibility is that the baffles themselves are stuck and the coolant that is supposed to be directed to the passenger side is not being directed their.

Either way, your technician has some work ahead.

Jun 05, 2015 | 2002 GMC Envoy XL

1 Answer

Why is my 2006 Pontiac Torrent is not pushing heat through the vents when turned on, only cool air.


heater core could be out . is you thermostat in still?? and when turning the heater on is the car already warmed up??

Sep 29, 2012 | 2006 Pontiac Torrent

1 Answer

How can i get the vents to blow cool or cold air instead of hot air


Your Heater tap is probably stuck in the on posision. This is in the engine bay. Not sure if yors is vacume, electric or cable operated. Temporary fix bypass the heater alltogether ie: put the hoses that go to the tap reroute to the motor

Jul 05, 2012 | 2010 Chevrolet Traverse

2 Answers

1991 Chevy G20 My Van does not produce much heat. If I turn the fan up i get cool air yet if on low or off i can feel heat just at the vent. If i am driving a while i seem to get adequate warm air but...


The heater core may be coroded and pluged up. Its common on older cars. f the cooling system was drained recently and refilled its possible there os air in the system which will block the flow through the heater core. You should also check the valve ,usually on heater hoses to make sure it is opening and closing properly when you turn the temp up.

Oct 22, 2010 | 1992 Chevrolet G20

3 Answers

Can not find heater control valve 2000 expedition


what year? for 2000, there are no control valves. It mixes a/c air with heater core air to blend the right temp.

SECTION 412-02: Heating and Ventilation 2000 Expedition/Navigator Workshop Manual
DESCRIPTION AND OPERATION Heating/Defrosting The heating and defrosting system has the following features:
  • Controls the temperature and, during A/C operation, reduces the relative humidity of the air inside the vehicle.
  • Delivers heated or cooled air to maintain the vehicle interior temperature and comfort level.
  • Controls the A/C blower motor speed.
  • Cooling or heating can be adjusted to maintain the desired temperature.
  • Uses a reheat method to provide conditioned air to the passenger compartment.
  • The blower motor draws outside air through the A/C recirculating air duct, except for MAX A/C cooling, when recirculated air is used.
  • All airflow from the blower motor passes through the A/C evaporator core.
  • The temperature is then regulated by reheating a portion of the air and blending it with the remaining cool air to the desired temperature.
  • The temperature blending is controlled by the temperature blend door, which regulates the amount of air that flows through and around the heater core, where it is then mixed and distributed.
------------------------------------------------------------------------------------------------

Dec 01, 2009 | Ford Expedition Cars & Trucks

1 Answer

Heat will not work air work fine cannot get heat to come on blow cold air


Check to see if your heater core is stopped up. To do this, start the car and warm up the engine. Turn the heater on and turn the temp up. Raise the hood and locate the two heater hoses on the passenger's side going through the firewall below the windshield. Feel both hoses with your hands. If one is hot and one is cool, then the heater core is stopped up. Turn the engine off and let it completely cool. Disconnect the two heater hoses and blow through one and then the other with an air hose till it is clear. Reconnect heater hoses. If this is not the problem, then listen for a clickin noise behind the dash while the car is running and the heater of air is on.

Oct 04, 2009 | 1997 Lincoln Town Car

1 Answer

No heat


1 Inspect Cooling System Mix Coolant level low or flow is restricted. grey_line.gif 2 Inspect Thermostat Thermostat stuck closed grey_line.gif 3 Inspect Heater Control Valve Leaking or defective heater control valve.

Dec 04, 2008 | 2002 Pontiac Aztek

4 Answers

NO HEAT


Les, it sounds like your blend door actuator has failed, it is a small vacuum operated diaphram up under the dash that controls a flapper that switches between the cool air and heated air. Good news is that it is an inexpensive part, bad news is pulling the dash out to get to it.

Oct 02, 2008 | 2001 GMC Jimmy

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