Question about 1999 Toyota Avalon

1 Answer

The fan blower, even after changing it to cool -giving hot air

Hi, I have 2001 toyota avalon. In winter, I put the temperature knob of fan (2 near music system) to heat. After that now when I put it back to cool side, I am getting only the hot air from the blower. Both knob shows to cool (blue side) but giving only the hot air. What can be the problem?

Posted by on

  • 1 more comment 
  • Himanshu Gupta
    Himanshu Gupta May 08, 2014

    Thank you but can you give me some more details as how I can fix it?

  • steve May 08, 2014

    strip out the control panel a check that the direction control cable is connected both ends ,get a workshop manual as this will give step by step instructions,google workshop manual for your vehicle they dont cost very much and will save you money

  • Himanshu Gupta
    Himanshu Gupta May 08, 2014

    Ok., Thank you. I will try.

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Toyota Master
  • 3,679 Answers

I would think the vent direction control isn't moving the heater box vent , stuck in the open position so only hot air from the engine ,strip out the control panel a check that the direction control cable is connected both ends ,

Posted on May 08, 2014

Ad

5 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad
  • 1 Answer

SOURCE: A/C will suddenly send out heat. Fiddling with knobs seems to help. What's wrong?

You have a broken wire connection between the temperature control knob and the circuit board behind the center dash console. Vibration causes the failure and once the control knob gets loose the solder connection fails.

For someone that knows how to remove the dash unit and can re-solder a couple of new wires this fix should take no more than 1 hour. Make sure that you apply loctite to the heat control knob spindle nut when you re-assemble it.

The dealer quoted me 750 dollars to fix this issue and I found out that it's a common failure for this year. I fixed mine virtually for free but it took some tools and about an hour of my time.

Posted on Jun 21, 2009

  • 1 Answer

SOURCE: Heater not working, had thermostat replaced no

My 87 Celica had the same problem and it was the solder connections on the back of the heater control panel.

Posted on Nov 05, 2009

  • 202 Answers

SOURCE: 1998 toyota avalon xls - air/heat

check or replace the blower motor resistor. hope this can help.

Posted on May 08, 2010

  • 62 Answers

SOURCE: 1998 toyota avalon heat blows..but blows out cool??? any suggestions

this is going to sound silly, but check you coolant level... if the level is ok, you will have to check to see that the blend door is operation properly. the blend door is located inside the box on the passenger side of the dash. also, check the switch that lets you go from hot to cold....

Posted on Nov 04, 2012

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Why doesn't my 2001 Ford Taurus have heat but the blower motor works but only blows cold air.


Is the coolant level full ? Are the heater hoses hot to the touch ? Do you know where the heater hoses are ? Out in the engine compartment going through the fire wall into the passenger compartment . 2 hoses , one carries hot coolant into the heater core the other is a return back to the cooling system . If hoses are hot you have a temp. door not working . When warmed up what does temp gauge show ?
Temperature Control
The temperature control operates in the following manner:
  • Temperature control of the manual A/C-heater system is determined by the position of the temperature control knob (between COOL and WARM).
  • This control knob is connected to a potentiometer mounted in the integrated control panel. This potentiometer is electrically connected to the A/C electronic blend door actuator that operates the A/C air temperature control door.
  • The A/C electronic blend door actuator contains a reversible electric motor, another potentiometer and a printed circuit board. The wiper of the potentiometer is connected to the actuator output shaft and moves with the output shaft to indicate the position of the A/C air temperature control door.
  • Battery voltage is applied to the ends of each potentiometer. The voltage available at each wiper indicates the position of the potentiometer. The printed circuit board drives the actuator in whichever direction is necessary to make the actuator wiper voltage agree with the control wiper voltage.
System uses a reheat method to provide conditioned air to passenger compartment.
  • All airflow from the blower motor (18527) passes through the A/C evaporator housing where it can be cooled and dehumidified.
  • Temperature is then regulated by reheating a portion of the cooled dry air and blending it with the remaining cool air to the desired temperature.
  • Temperature blending is varied by the A/C air temperature control door which regulates the amount of cooled air that flows through and around the heater core (18476), where it is mixed and distributed.

Feb 24, 2016 | Ford Cars & Trucks

4 Answers

Air Con


no the pipes should not be cold and wet but if you just have stop using the aircon recently it will do that for a while till all the gas is out of the system so yes its sorta normal

Oct 02, 2008 | 2001 Chrysler PT Cruiser

1 Answer

2004 Toyota tacoma Pre runner 4 door AC works fine blows cold, No heat ? have checked radiator and thermostat as well as heater core have hot coolant running through entire system but still no heat not on...


You have a problem wit the air temperature control blend or the blend door actuator motor, most times both are defective. The parts are located deep in the dash and as such the dash assembly must be removed to service the parts.

Jun 26, 2017 | 2004 Toyota Tacoma

1 Answer

The temperature control does not change when the fan is turned up. if i want to change the temperature from hot to cold, i have to turn down the fan, listen for the switch in the dash and then turn the...


I can tell you about my experience on my 1999 F150. I do not believe it is the blower control switch because mine went out and only affected the fan speed. On my truck, in an incident like yours, I could not get a good response from the temperature switch.

I would turn the control and it would hit a stop on both ends, but the temperature would not change to match the switch. What I found is the stem of the temperature control did not turn because the knob cracked behind the switch. There is a half-moon shaped metal clip inside the plastic temperature knob. The clip can spin when the knob is cracked and nothing moves right.

Because the plastic knob has molded stops under the knob, from the drivers point of view, the knob was turning lock to lock. In reality, the stem was not turning. Try taking the knob off and turning the stem with pliers wrapped in cloth to protect the plastic. Then see if the temperature changes.

Jun 30, 2011 | 1998 Ford F150 Regular Cab

1 Answer

How to change a thermostat in a 1995 toyota avalon


Radiator Thermostat - It is at the other end of the lower rubber hose of the radiator where the hose itself terminates on the engine- it is called thermostat housing.

For Ac unit - if manual adjustment- just like and ordinary thermostat of the air conditioner it is the knob where you adjust the temperature.

If electronic/digital type need to change whole assembly.

Mar 01, 2011 | 1995 Toyota Avalon

2 Answers

1998 Town Car A/C Blows Hot Air But Is Charged Up


Hi - There may be 2 separate problems. On my 1991 Lincoln Town Car, there is a Thermal Blower Lockout sensor that disables the heater from blowing until the engine temperature reaches a specific temperature. This way if you have vent or floor settings and 90 degrees set and it is winter, you won't get blasted with cold air. When the vehicle warms up, the TBL circuit enables the climate control to blow the hot air. If you use the flr/def instead of the floor or vent control, the TBL should not prevent the heater from working even with a cold engine. On my car, the TBL went bad and always prevented hot air from blowing on the floor and vent settings, even when the engine was hot. Another thing to check is a thermal limitor resistor. It is designed to cut off the blower at very hot temperatures, except if the blower fan is in the hi setting.

As far as the A/C is concerned, can you verify if the clutch is engaging or not? A rapid cycling of the clutch is an indication of low freon. If you are absolutely sure that you are fully charged on freon, I think there are 2 possible causes: (1) Bad pressure switch on the accumulator is indicating low freon that is telling the compressor not to work; (2) a blocked orifice tube.

Aug 02, 2009 | 1991 Lincoln Town Car

3 Answers

Temperature gauge is high but radiatior fan is working


how is the radiator and the thermostat?  Do the cooling fans come on?  Are you totally filling the cooling system and bleeding it?

Mar 25, 2009 | 1998 Toyota Corolla

2 Answers

Nissan Altima no cool air blowing or hot air blowing


Hi!
It appears we have an Air lock scenario and you will need to perform a system Bleed.
Park the vehicle on level ground, when cold remove coolant filler cap, start engine and leave to idle, turn heater on full and blower to max. When engine reaches operating temperature watch and listen near coolant filler, keep clear as gurgling and hopefully a boil over should occur. Top up with very warm coolant and wait as it may do it again.
Check for heat inside vehicle if warm replace coolant cap but keep an eye on temperature gauge as the ~Air lock may have moved on from heater matrix/core so proceedure needs to be carried out again from COLD.

Please press the Blue button to appraise my FREE Efforts, Thank You!
Paul 'W' U.K

Feb 24, 2009 | 2002 Nissan Altima

Not finding what you are looking for?
1999 Toyota Avalon Logo

196 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

yadayada
yadayada

Level 3 Expert

76070 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8266 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...