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HEATER CORE? last january i had a new heater core put in my ford f150 1998 truck, because it seemed like the heat was not blowing out like it should. during the summer every now and than i would turn the heat on to make sure it was working like it should. it seemed like it was most of the time. now when i REALLY need the heat to work, i get nothing. it almost sounds like when i turn the dial over to heat the blower doors inside ar not opening up? does that make sense? any idea what the problem might be? thank you for your time. eternally grateful me, noelle

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  • 73 Answers

You could have a bad vacume motor or a leaking vacume line .

Posted on Dec 27, 2013

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Posted on Jan 02, 2017

hiseyj
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SOURCE: no blower for heater 1993 nissan altima

It is very possible you blew a fuse. There are two 15 amp fuses for the blower motor, make sure you check both of them.

Posted on Nov 26, 2008

emissionwiz
  • 75066 Answers

SOURCE: 1992 honda accord ex 4 door heater not blowing

You may have a clogged heater core, leaking heating cores still provide heat.

Posted on Dec 05, 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

  • 15 Answers

SOURCE: ford ka heater blows hot air all the time

Your problem is a faulty heater control valve. The design used on these vehicles allows for hot water to flow constantly and compete with the evaporator as there is no blender door. You have to replace the valve and possibly the control head. Meanwhile, you can bypass the valve to have cold air

Posted on Sep 12, 2009

  • 11 Answers

SOURCE: 1998 for taurus heater wont blow hot air only cold

you need to check the blend door in the heater box it maybe broken or stuck.the blend door switches between the heater core and ac evaporator to provide a mix of temperature

Posted on Oct 18, 2009

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1999 ford taurus no heat blowing out of vents cool air blows out has a new t-stat ,antifreeze is fine,


Hi Ron,

Blend air door actuators fail often in Ford Taurus. It sounds like that may be the problem with yours. For more information regarding this subject, please read the following article:

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1 Answer

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1 Answer

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I had problems with a similar truck,a 1998 GMC diesel after checking to make sure the control cables were operating the blend door and blowing the mess of the heater core,I replace the thermostats.Still no heat turns out there was a small amount of debris collecting in the fitting for the inlet hose at the thermostat housing after removing it and blowing out the lines the heat was fine.

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