Question about 2004 Ford Ranger

1 Answer

My 2004 ranger temperature selection knob will not allow hot air to come on. I have to play with it over and over again and I might get the hot air to work. What's going on?

The heater works but I have to constantly play with the knob to get it going.

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    A rookie expert who has answered 20 questions on their first day.


    An expert who has answered 20 or more questions within one hour.

  • Expert
  • 62 Answers

It could either be the knob control itself, or it could be the blend door inside the box behind the passenger dashboard.

Posted on Nov 05, 2012


6 Suggested Answers

  • 2 Answers

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

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.

Posted on Jan 02, 2017

  • 12 Answers

SOURCE: the heater only blows hot air

You didn't mentioned the model year of your Ford, but you might try lubricating the heater control switch which is located in the engine compartment side against the firewall. If you have someone try to move the temp knob inside while you look in the engine compartment, you might find the control valve. Once you find it, check to see if the cable is still connected, then try lubricating it with some WD-40 at 1st to get it sliding like it should. Once the cable is opening and closing the valve like it should, you will notice the temps adjusting like they should. Good luck!

Posted on May 08, 2009

SOURCE: 2004 ford ranger. temperature gauge

is the coolant flowing thru the radiator check bottom hose should be same temp as top hose if not could be clouged radiator or week water pump

Posted on Jul 27, 2008

  • 424 Answers

SOURCE: Temperature Control not working on 1999 Ford Explorer

Sounds like your temperature actuator is not moving or your temp door is broken. On max a-c ,coolant is shut off to your heater core allowing only cold air in.

Posted on Jan 26, 2009

  • 58 Answers

SOURCE: Heater blows hot air in all control settings 98 Ranger

There is small cable that runs from the back of the temp control switch on the console that goes through the firewall and loops around a valve on the heater hose that is used to control the amount of hot coolant that goes into your heater coil. This cable hooks on the back of the temp control switch also. Bad news, that's probably where it came off and you'll have to pull the control unit out of the dash to get to it.

Posted on Aug 11, 2009

  • 488 Answers

SOURCE: All of a sudden, my 2004 Ford Taurus heater

The valve (called the heater tap) which controls the hot water flow works from engine vacuum. The climate control unit turns vacuum on to close the valve and turns vacuum off to open it, if the vacuum tubing or vacuum service valve has failed, the tap will be open allowing hot water to flow. The same result applies if the heater valve itself has failed (which they do --regularly) Trace the water hoses from the enginebay firewall under the hood and you should find the valve. Check for cavuum at the valve with the climate control set to its coldest setting. If you have vacuum at the valve, replace the valve. No vacuum points to the loss of vacuum source or a faulty vacuum service valve with will be electrically operated from the climate control. Trace the vacuum hose from the heater valve back to the vacuum service valve and check if the valve has vacuum supplied to it. No vacuum means a vacuum hose has blocked, has a hole in it or has been removed from the manifold. If the electrical valve has vacuum, check for power. If power is present but still no vacuum at the heater tap, replace the service valve. If power missing, check fuses. If both wires to the valve show power present, have the climate controll unit checked by a professional..

Posted on Oct 31, 2009

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

My 2004 avensis is blowing hot air even when the ac is off and the temperature knob is at cold position..someone please help

Air blend door seal may have failed, or door actuator has stuck. For most cars it requires removing entire dash to get to this--no fun.

Sep 27, 2016 | Toyota Avensis Cars & Trucks

1 Answer

Cold air works fine but my heater does not blow hot air just cold in a 1993 ford ranger

check the cooling system to make sure the system is check the temperature of the heater hoses when the car is at operating temperature.they should be the same temp,if one is not as hot as the other then the heater core is plugged and will need to be can try to run clr through the heater core to see if it will unplug the heater.the other thing is the temp door will have to be checked to make sure its moving through out its full travel by moving the temp knob/lever and looking at the door arm to see it travel full range.this is located under the dash on the passenger side on the duct work.

Sep 18, 2011 | 1993 Ford F250

1 Answer

My 2004 Blazer is running fine, and all the gauges appear normal as far as temperature. However, there is no heat coming out of any of the vents. I have moved the knobs around to try to...

when engine is warm try touching the coolant line to your heater core under the hood pass side
if they are both hot coolant is flowing true and heater core should be o.k.
if not have it reversed flush
if o.k the a/c to heat door may be stuck not allowing air from heater core in or actuator to that
door has malfunction

Apr 02, 2011 | 2004 Chevrolet TrailBlazer

1 Answer

I have a 04 galant. The heater won't blow hot air. Went to a repair shop and they said it was temperature control (the control knobs in the car). Replaced that and it still doesn't work. What else can it...

It does blow correct? Just not hot air? This shop replaced the control head (the unit that the knobs are connected to)? I'm assuming the answer to all is yes. There may be a jam. Not too common but I've seen it a couple times. There are doors within the air box under your dash where your blower motor and heater core are. The control head controls these doors, opening one vent door to outside air and/or to the evaporator, closing the other vent door to the heater core or vise versa. It also controls the doors which direct air to certain ducts that will blow out the selected vents. If something has been droped down through a vent and worked its way to these doors I'm talking about, it could jam the door closed that goes to the heater core, preventing heat from blowing through the ducts.

Jan 08, 2011 | 2004 Mitsubishi Galant

1 Answer

Heater is hot when rolling, cold air when stopped?

Many newer cars have a bleeder to allow air out of the cooling system. (usually a brass fitting or nut on the cooling lines hard pipe) This allows proper coolant level. Could be low on level check it again very thoroughly. Caution keep an eye on temperature gage till your sure of proper level. Insufficient fluid can give uneven heat performance.
Hope this helps.

Dec 11, 2009 | 2004 Honda Civic

1 Answer

2004 Yukon. driver side air conditioner not working

you need to change drivers side temp door actuator then disconnect battery for 5 seconds and reconnect after changing the part, turn key on for 60 seconds with touching heater control to allow actuator to program and then it will work.

Sep 19, 2009 | 2004 GMC Yukon

1 Answer

Temperature Control not working on 1999 Ford Explorer

Sounds like your temperature actuator is not moving or your temp door is broken. On max a-c ,coolant is shut off to your heater core allowing only cold air in.

Jan 16, 2009 | 1999 Ford Explorer

Not finding what you are looking for?
2004 Ford Ranger Logo

118 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers


Level 3 Expert

5522 Answers

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

Answer questions

Manuals & User Guides