Question about 1991 Ford Ranger Supercab

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My heater control lever only goes half way to cool and stops. so hot air is blowing. How do i get to the cable? Does the whole dash board have to be removed or is it possible to come up from the bottom?

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Honestly do not know ,but i would hazard a guess that the outer cable has come adrift from its fixing but which end?' sorry i cannot be more specific but i have never seen one of these here in spain

Posted on Jun 06, 2010


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Heated air still comes out of my vents even when the air is off

You might have a faulty water valve. The hot air in the car is supplied by the engine cooling system. As the engine works, it heats up and water is circulated through the system and kept at a cooling level by the radiator. However, this water is still hot, and by turning on the heat in the car, a valve is opened that allows the hot water to circulate through the heater core inside the car.
This core is in fact just a mini radiator, and air from the blower fan inside the car blows air through this mini radiator, thus supplying hot air in the car.
If you don't want hot air in the car, the heater control operates a valve that shuts off the hot water from the engine. If this valve is faulty, it will allow hot water to circulate through the system. Another possibility is that the cable operating the water valve might be maladjusted or the cable or the lever operating the cable is broken or faulty. It often happens that the outer part of the cables slip and the controls operate so-so but never well.
If the cables to the dashboard controls are not adjusted properly or have started slipping, it could also cause the fresh air vent to not close properly, and this will cause a flow of air even when the controls and the fan are turned to the off position.
You can remove the control panel from the dash and check the cables and controls, but it is a finicky job. Maybe you want to take the car to a mechanic?

Mar 29, 2014 | 2001 Nissan Sentra

1 Answer

2007 honda pilot blows hot air all the time from front blower

so , you dont like heat?
my guess is you selected, cold with the cold lever. from hot
and it still blows hot., right?
that means the (depend on year, and submodels) if car
has hot water valve or hot damper
but really dont matter, one or other is dead. and stuck.
i login to and see ,bingo a valve. water valve.
it has , a valve lever. and when you move dash lever the valve
lever most move in direct proportions.
if not the cable is bad. (busted) 4 ways possible. but is obvious.
this car has auto or manual A/c dash controls. options.
so that has bearing on the fix.
and aux, heating option. which i ignore here.
the abvious:
the cable at dash , fell loose. clips)
cable at end, valve, same. as above.
cable sheath not clamped and just wiggles,, messing up action.
the cable inside is snapped.

Feb 27, 2014 | Honda Pilot Cars & Trucks

1 Answer

Heater blowing cold air

Feel the two heater hoses going from engine into the firewall. Both should be hot when the engine is at normal operating temperature-showing that the heater core is circulating coolant.
If both hoses are hot or warm at least, then your heater case doors are not operating properly. The temperature blend door that allows air to flow past the heater core and pick up heat is probably the culprit. Check on the case doors-they are probably vacuum operated. Watch for movement on the vacuum controllers as you work the controls. They're all different-figure out which are working and which one is not. Vacuum hoses go to little canisters. When vacuum is applied, the diaphragm in the canister pulls a lever inward on the canister's end. The canisters and levers are attached to the various doors, opening and closing them as demanded by the dash controls.
The vacuum for all this jerry-rigged stuff is a single vacuum hose from the engine, through the firewall, into the back of the HVAC control head, or heater controls, where a pod-like thing can distribute vacuum signals to several lines, often color coded, around the heater assembly case.

Nov 21, 2013 | Chrysler PT Cruiser Cars & Trucks

1 Answer

Interior blower only blows up to warm on 1997 A4 2.7ltr

Check the blend door cable for proper attachment to the control panel and to the blend door. Try opening the door manually to see the you can get hot air out. If not, the door may be broken inside the heater box. If yes, correct/adjust the cable attachment for proper operation.

1990-97 Passat Models
Install the cable ends marked with a white or blue band to the control head assembly. The cables must be attached to the control head before connection to the system air flaps.
  1. Remove the climate control head from the center dash assembly to access the control head cable ends.
  2. Remove the lower dash panels as necessary to access the cable lever arms.
  3. Attach the airflow distribution cable (cable 2) to the airflow distribution knob's lower control lever.

This cable can be identified as follows:
Operates the mode/central air flap Cable has a black sleeve and is 25.0 inches (634 mm) long Cable is marked with a white band
  1. Press the cable's sleeve against the control head stop and install the retaining clip.
  2. Attach the temperature control/air blend cable (cable 3) to the air temperature knob's control lever.

This cable can be identified as follows:

Operates the temperature control/air blend cable air flap Cable has a blue sleeve and is 21.0 inches (535 mm) long Cable is marked with a white band
  1. Press the cable's sleeve against the control head stop and install the retaining clip.
  2. Attach the airflow distribution cable (cable 1) to the airflow distribution knob's upper control lever.

This cable can be identified as follows:

Operates the footwell/defroster air flap Cable has a black sleeve and is 37.5 inches (954 mm) long Cable is marked with a blue band
  1. Install the cable such that the blue band is over the retaining clip mount and install the retaining clip directly over the blue band.
  2. Install the climate control head.
  3. Set the air flow distribution knob to defrost.
  4. Connect the longest airflow cable (cable 1) to the footwell/defroster flap lever on the heater's air box.
  5. Press and hold the flap's lever toward the retaining clamp perch and install the cable retaining clip.
  6. Set the airflow distribution knob to the Vent position.
  7. Connect the short airflow cable (cable 2) to the central/mode flap's lever.
  8. Pull and hold the mode flap's lever away from the retaining clamp perch and install the cable retaining clip. Check the operation of both air flaps making sure they can be heard contacting their stops.
  9. Set the temperature control knob to full cold.
  10. Connect the blue-sleeved cable (cable 3) to the air blend/temperature flap's lever.
  11. Pull and hold the mode flap's lever away from the retaining clamp perch and install the cable retaining clip. Check the operation of the air blend/temperature flap making sure it can be heard contacting the stops.


Fig. Side view of the control head and cable location. 1. Footwell/defrost flap cable-2. Air distribution cable-3. Temperature control flap cable


Fig. Temperature flap cable location and adjustment

Nov 24, 2011 | 1998 Audi A4

2 Answers

My heater does not work on my toyota tacoma 2007 prerunner, the fan is only working...

heater core might be blown-off. also see your fuses for heater under your dash fuse panel or at the under hood sometimes where they are.check your cold lever position might be at full cold counter clock wise, move it to hot position clock wise.

Jan 12, 2011 | 2007 Toyota Tacoma

1 Answer

I have bmw 318ci and the hot air is not working, the heater is blowing and set to max heat but only blowing cold air, i have checked the fuse box, any ideas??

The heater operates from the hot water from the engine cooling system flowing through the heater radiator which is inside the air ducts under the dash. I suspect that the control wire/cable that goes from the heater control lever has broken or become disconnected from the heater tap that controls the volume of hot water through the heater radiator. Some times there is also a flap in the air ducts that is operated by the heater lever tha varies the amount of air that is heated. The tap may be in the engine bay or tucked in behind the air ducting.

Aug 31, 2010 | 2000 BMW 3 Series

1 Answer

Previous owner installed a tempurature contol are

Your heater door cable is maladjusted.I would start be removing the heater control and follow the cable to the door it controls. See which end is adjustable - it will have a small screw and a holder.

I would push the lever to full cold and then loosen the cable and let it slide until the lever maxes out in the cold spot on the controller and then tighten again. Test its operation a few times before reinstalling everything.

Jan 13, 2010 | 1994 Mercury Topaz

2 Answers

Heater is blowing cold air is there a fuse? Or is there a cable that opens to switch it over from cold to hot?

There should be a heater control valve located under the hood in a hose. One hose goes into the firewall which flows through the heater core inside the rear of the dash and another hose coming out and back to the engine. It is probably a bad control valve or maybe the cable is stuck which opens and closes it when you move the knob on the dash. Have someone inside the car move the lever from hot to cold and see if the cable to the heater control valve moves. The rest depends on how handy you are. Should be an easy repair for your local shop.

Nov 30, 2009 | 1994 Oldsmobile Cutlass Supreme

2 Answers

When puting heater on cool browing hot air

There is a door attached to the cable behind the levers on the heater controls. The cable goes to the heating unit under the dash to a trap door that is supposed to move. You will want to look to see that the cable is attached and moving the lever on the side of the blower box under the dash. If its not moving, move it manually and see if you get temperature change to cool. Probably, your heater is stuck on and hot air is being carried over the heater core and into the vehicle. You need to close off the door that allows the heat into the vehicle and then trace the cable back to the lever to find out where the problem is. Maybe a broken or disconnected cable or improper closing heater box door.

Aug 15, 2009 | 1988 Ford Festiva

1 Answer

Ac bows hot air on high when on auto- only on the drivers side

the vent channels behind your dash is where the problem lies. It mostly depends on you and your skill. You are going to have to get help also because the dash lifts up and rolls back twards the driver and passanger seats. what you have to do is first check the cable or vacume assembly that operates the vent controlls, make sure nothing is disconnected or broken. If all the cables are in place and move correctly and the vacume hoses have all been pulled off and checked for crackes wholes and functionallitgy. then start checking the seals and vents that route the air flow. find the one that goes to the driver side make it move with your hands then see where the movement comes from also check the seals if they are broken or have come off and are just not allowing air to be channeled to that location. Also make sure that if the control pannel in the dash board is good. Usually if its electric and bad there is a specific smell you will get from burnt electrical boards or components.

Taking a dash off is not the easiest work in the world, and you have to remember wheere every single screw, bolt, nut and clip goes. If you forget one single thing the dash could ratle squeak or do something that will totaly drive You INSANE for the rest of your life. I am not trying to say don't do it, I love DIY'ers but think about if your ready for this. Is your skill where it needs to be and do you have the tools needed for this task. Also, I would buy a Chilton, it will have ilistrated pictures and special notes. I hate saying this also but read the entire procedure first before starting I once took the entire dash off of a chevy blazer to replace the heater core just to find out I had to cut a molded plasitc shield under the hood. Had to put the entire dash back together without replacing the heater core because I didn't have a cutting device for the plastic shield.

Hope this helps


May 01, 2009 | 1999 GMC Suburban

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