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F250 heater not working

The fuses are ok, replaced the resistor and motor. I may have a vacuum leak but not sure. I have order a new resistor switch.

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There is heater core bypass valve connected to the heater hose from the engine to the heater , check the vacuum actuator hose for leaks
( replace that vacuum hose is what i would do ) if you replace that vacuum hose and still getting zero heat output from the heater core .
then the heater core bypass valve is either jammed closed or failed completely

Posted on May 06, 2014

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Posted on Jan 02, 2017

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98 dodge Ram 1500 electrical manual? Heater quit working, fan not turning on?


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Heater and blower wont work and fuses are ok


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Dec 12, 2012 | Cars & Trucks

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Heater switch replacment


Hello! it's my job to make things as easy for the customer as possible...Therefore I must ask why you want to replace the heater switch? Is it because you have lost one or two of the switch speeds? Your vehicle is noted for loss of the Blower Motor Resistor...
Changing the Heater switch means removal of the Climate Control Assembly which is not the easiest of jobs...I've included the process...But are you sure the blower resistor is OK? If you have lost 1,2, or all blower motor speeds it's more than likely the Resistor pack. And a lot easier to change...
Guru...saailer


Remove climate control:





12_26_2011_2_15_09_am.gif
  1. Remove the instrument cluster finish panel...
  1. Remove the 3 climate control assembly screws...
  1. Disconnect the climate control assembly vacuum connector...
  1. Disconnect the 5 climate control assembly electrical connectors...
  1. Remove the climate control assembly..
Removal of blower motor Switch:
  1. Remove the climate control assembly.
  1. Remove the blower motor switch knob.
  1. Remove the blower motor switch.
    1. Remove the screw.
    1. Remove the blower motor switch.

Removal of blower motor Resistor:


12_26_2011_2_22_49_am.gif
Blower Resistor is under the battery tray...

MOTORCRAFT Part # YH1698 ...cost $25

12_26_2011_2_28_50_am.jpg

Guru...saailer

Dec 22, 2011 | 2007 Ford Econoline

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Hello my name is Sean and I have a 2002 ford focus wagon with a 2.0 motor. The blower fan for the heat and air has stoped working. I have ordered a new blower fan and resistor but havent received yet. I...


the fan motor is maybe bad, disconnect it (the motor) and put in new fuse, if its ok, then the motor is bad. the resistor only handles speeds lower than HIGH. so replace the motor first, then try it, if all speeds work, then the resistor is OK.

Sep 12, 2011 | 2002 Ford SVT Focus

1 Answer

My heater fan would only work on high and now it quit all together. Could it be the heater fan, fuse or the control panel.


yes but u left out the resistor.....check fuse ..if ok test blower motor if ok .. test switch if ok......replace resistor...

Dec 14, 2010 | Oldsmobile Intrigue Cars & Trucks

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Last week the heater blower motor stopped working on intermediate speeds and would only work on high. Today after working for a little while on high I lost all speeds of the blower motor. Is it the switch...


resistor for sure, the switch would have caused all speeds to fail as it only has one moving contact but the tapped wirewound resistor is a common part for this fault.

Jan 13, 2010 | 1995 Chevrolet C1500

1 Answer

Getting heat in the heater core,heater door are opening, but no heat coming out the vents,help thanks


It sounds like the blower motor is not working. If you don't hear it running when you switch it on, check the fuse first. If the fuse is OK, you will probably need a new blower motor. It could also be a faulty fan switch or blower motor resistor. Once you remove the blower motor assembly, you can test it by putting battery voltage across the contacts with jumper wires, making sure to get correct polarity. If it does not spin, it should be replaced. If the blower does work when removed, the fan switch is probably at fault. The resistor is usually indicated when the fan works only at certain switch positions, but not all.

Dec 19, 2009 | 1998 Jeep Grand Cherokee

1 Answer

Blower motor does not work


I had the same problem, replace, replace, replace. Check, check and recheck. What I found was the blower motor resistor, located in the blower squirrel cage area, two prongs and a curly wire, was bad. Took the new one back, (it ohmed out okay, continuity ok, all ok!) replaced it with another, and Bingo, problem solved. Frustrating to say the least. After two relays and a blower switch, and test, test and retest. It was a faulty resistor. Made in Mexico. And no guarentee, even though new, it works. Trial and error. Even the dealer parts are Honcho en Mexico. Thanks NAFTA. You gonna make us all welfare babies.

Sep 28, 2009 | 1997 Jeep Grand Cherokee

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