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Where is blend door located on 97 f50 xl

No heat or cool control!! New heater core ,Have heat in the box no heat coming out!!

Posted by Anonymous on

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  • 2 Answers

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Posted on Jan 02, 2017

  • 10 Answers

SOURCE: blend door heater all hot

No need to do that, behind the glove box is the blend door motor, it most often breaks the shaft of the blend door, which causes a costly fix, and it will break it again. There are sites that tell you how to remove the motor, drill a small hole and put a pin in the shaft so that the motor will still turn the broken connector, I did this and my blend door is still working 5 years later. I have heard stories of people paying up to $700.00 to have the original blend door replaced, and it breaks again.

Posted on Jul 16, 2008

  • 61 Answers

SOURCE: 1998 ford f150- heat issue

There is no heater valve on a 1998 ford F-150. The hoses for the heater lead directly from the engine and go to the heater case. PS The heater doors are all vacuum controlled so you might wanna look under the dash for any lines that might be disconnected

Posted on Jan 28, 2009

  • 202 Answers

SOURCE: Need to find and fix blend door on 2001 Audi A4 Quattro 2.8L

you would have to remove the dash. i would first check the auxilary water pump to make sure it's not leaking. if your car has electronic climate control turn the heat on low with the engine off the change the temperature and listen for an electric motor sound to see if the blend motor is working.

Posted on Oct 29, 2009

  • 118 Answers

SOURCE: i have a 1998 ford f-150 and no heat. i have

You just might have an air lock. Try bleeding the system from the heater hose at the firewall. Losen one hose a little, and at operating temp. open slightly to let air out. You will lose some coolant, but just refill the rad. Now, both hoses should get hot.

Posted on Jan 01, 2010

  • 2 Answers

SOURCE: heater blows cold air. I have replaced thermostat,

Not an expert by any means, but i know my ranger.. I had a small leak at the top of my radiator that still cooled the engine but didnt have enough pressure to get to the heater. The heater hoses travel up over the engine and just were not gettin anything to my heater core. That or make sure the heater control valve is operating.

Posted on Apr 16, 2010

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1 Answer

2000 oldsmobile bravada heater control valve location


If you are looking for some sort of water valve that diverts water to/from the heater core, forget it. They don't exist anymore. They went away shortly after the widely adapted use of air conditioning in today's modern cars. Now, hot coolant is routed thru the heater core at all times, but is controlled by a cable-operated, or vacuum operated "blend door" located inside the heater box. If you are not getting heat to the vehicle, there are a few possible problems:

1. Bad thermostat - thus low coolant temperature and lack of heat.
2. Clogged heater core - no water flow thru core, thus no heat.
3. Broken control head - loss of cable or vacuum actuation of blend door.
4. Broken heater box/vacuum tank - no actuation of blend door.

Of the items listed above, based on the age of the vehicle and the likelihood of occurrence, I would investigate them in the order of 2, 4, 1, 3.

Jan 20, 2016 | 2000 Oldsmobile Bravada

1 Answer

Heat not working


Sounds like the air blend door is not opening to let heat in.

Engine coolant is provided to the heater system by two 16 mm (5/8 inch inside diameter) heater hoses. With the engine idling at normal running temperature, set the heater-A/C controls as follows. Temperature control to full Heat, Mode control to Floor, Blower control to the highest speed setting. Using a test thermometer, check the air temperature coming from the center floor outlets and compare this reading to the Temperature Reference table.

If the floor outlet air temperature is insufficient, check that the cooling system is operating to specifications. Both heater hoses should be HOT to the touch (the coolant return hose should be slightly cooler than the supply hose). If the coolant return hose is much cooler than the supply hose, locate and repair the engine coolant flow obstruction in heater system.

POSSIBLE LOCATIONS OR CAUSE OF OBSTRUCTED COOLANT FLOW
If coolant flow is verified and the heater floor outlet temperature is insufficient, a mechanical problem may exist.

POSSIBLE LOCATION OR CAUSE OF INSUFFICIENT HEAT
  • Obstructed cowl air intake.
  • Obstructed heater system outlets.
  • Blend-air door not functioning properly.
TEMPERATURE CONTROL
If heater floor outlet temperature cannot be adjusted with the heater-A/C control temperature control lever, one of the following could require service:

Jan 21, 2014 | Cars & Trucks

1 Answer

The heat does does not work in my 98 Tahoe at all its blows cold all the time I have done changed the there and put new coolent in it still have no heat so I by pasted the heat valve and ran it right in...


If you are getting hot water/coolant to the heater core and still no hot air coming out the vents, then it's a issue with the climate control or blend door. After running your engine and it reaching normal operating temp, locate your heater hoses that goes to the heater core. Carefully touch them to make sure both hoses are hot to the touch, if they are, you are getting hot water/coolant to and from the heater core. So, then it will have to be a issue with the climate control in the dash or either the blend door in the air box. It's a common problem for the climate control to go out on these models, hope this helps.

Nov 26, 2013 | Cars & Trucks

1 Answer

The blower on the heater works but no heat comes out just cold air, already changed the themostart and plenty of antifreeze, I had the system flushed and had a new heater core and nw radiator put in and...


sounds like all key components have been replaced, so I think the blend door in your air box is not switching, if you can switch selector and get air at defrost, panel and floor, but all cold, the blend door connected to the heat / cool control is not actuating. DW Mylin

Dec 01, 2012 | 1998 Chevrolet Blazer

1 Answer

Have ford f150 1996 wont switch to heat from cold replaced switch already


96' or 97' it makes a big difference. 96' models are very simple if you have a basic understanding of automotive work and some basic tools. remove the glove box, the heater core is located behind a panel just inside and below the glove box hole. first remove the plastic panel but not the heater core, to the left of the heater core inside the box is the blend door that separates the heater and A/C cores. this door is often obstructed by pens, pencils, or plastic junk that have fallen down into the defrost vents on top of the dash and landed in the box. something like this will stop the blend door from being able to close the A/C core off from the vents allowing cold air in. if you have big hands like mine you may need a woman or teenager to reach into the box and check for debris but you can see the door open and close when you turn the switch so you know where to check. if you have a 97' model the blend door actuator is electric and usually not accessible without removing the dash and heater/A/C box from the firewall. good luck

Jan 13, 2011 | 1997 Ford F150 Regular Cab

1 Answer

My 1997 ford expedition is only blowing cold air, is there a fuse i could change or is it the heater core?


Sounds like the common blend door failure on the Expedition. The problem is either with the heater core not getting hot, or the blend door not diverting air through the core. This is a common problem that Fords have. It is caused by the blend door getting stuck. This door is located behind the glove box and it controls the flow of Heat and A/C. Its probably stuck or broken, allowing the cold air from outside to come in instead of the heat from the heater core.
The heater core is difficult to change on the Ford trucks. They have it buried in the plenum box and you have to remove the steering wheel, steering column, dash, evacuate the refrigerant system, drain the radiator, and remove the plenum box to get to the core.

Replacing the core is easy, getting to it is a day's work. The Expedition is particularly difficult to get to. It is almost above the transmission tunnel and well buried behind the dash. The Expedition uses the same plenum box as the F150, so any information on that system applies to the Expedition/Navigator.

You need to be sure that the heater core is really the problem before tackling this job. If you have a pool of coolant on the floor, you'll have to go after the core. If the problem is lack of heat, there are some things you need to eliminate before tearing into the truck. You need to make sure that coolant is flowing through the core. Check the temperature of the heater hoses going into the firewall when the engine is cool and see if they warm up together as the engine warms up. If both hoses get hot at about the same rate, this is a good indication that coolant is flowing through the core. You can also remove the hoses and flush the core with a water hose splice from Home Depot and a water hose. Water should flow unobstructed through the core.

If it appears that coolant is flowing and you don't have obvious leaks, the next step is to check the blend door. This door controls the air flow through the heater core and failure is common on Ford trucks. When the door breaks, it can block the flow of air through the core and kill heat and will also have an impact on AC. If the system seems to work intermittently, it's a good indication that the door is broken and rattling around randomly blocking or opening the passage to the core.

For diagnostic information on how to check the operation of the blend door and a cheap easy fix, check the heatertreater listing on Ebay or the web site at heatertreater.net. The dealer fix for the blend door is basically the same procedure for replacing the heater core, so it will be expensive. The HeaterTreater alternative will solve the problem at a fraction of the cost and work and is well within the capability of the average shade tree mechanic.

You can try to fix it yourself if you check THIS VIDEO: Ford Expedition Lincoln Navigator


Hope helps.

Dec 21, 2010 | 1997 Ford Expedition

1 Answer

Have a 1998 dodge caravan blows cold only new thermastst flushed system new anti freeze help


Most likely the problem is a broken blend door inside the heater box or a broken adjuster cable going to the blend door, the blend door inside the heater box is responsible for heater output depending on your temp adjustment on your heater control panel, most likely the blend door is stuck in the cold position allowing cold air to come through the vents verses allowing the blower motor to blow warm air past the hot heater core to produce heat, check the temperature adjuster cable behind your heater controls and make sure its connected and not broken, lastly make sure the blend door isnt broken and operating freely.

Dec 06, 2010 | 2000 Dodge Caravan

1 Answer

No heat Heater core is hot


If heater core is getting coolant circulating through it then you may have a temp blend door, or blend door actuator not working properly. The blend door is located in the air box under the dash, and the actuator is located on the air box. You may be able to visually check the operation while turning the temp knob, by locating the coresponding actuator on the air box and monitoring the movement. If it is moving ok and still no heat then the blend door, or lever is broken, which will require removal of the dash.

Oct 17, 2009 | 2001 Dodge Ram 2500 Truck

1 Answer

Rear heater not working


Possible blend door motor (controls amount of heat that comes out). Or heater core in back is clogged, or air bubble. If your able to locate the two heater hoses that run to the back of the vehicle and check to see if there hot next to the heater core. if both are hot (be careful not to burn yourself) then the flow is good usually. need to pull the panel off and check the blend door motor is working when you turn the rear heater control to cold to hot. let me know what you see

Apr 07, 2009 | 2005 GMC Yukon Xl Denali

2 Answers

Cool air blowing from heater, even when on high.


Make sure the thermostat is good, system is full, heater control valve is not bound up

Nov 19, 2008 | 1995 Dodge Dakota

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