Ford

Have Ford questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

I have a 1999 Ford F-150 with a no heat problem. The dash…

Customer Question
I have a 1999...

I have a 1999 Ford F-150 with a no heat problem. The dash control switch clicks throughout all settings and blows air on each and turns off, but air only comes through the AC core? I was replacing the blend door through the glove compartment so I have access to the heat and AC cores. Although air only comes through the AC core on all settings, I can feel heat radiating in the heater core when I place my hand in front of it. where would you start? Vacuum, resistor, control valve, other?

Mechanic's Assistant: Have you checked to make sure the thermostat is working? What about the coolant level?

Coolant level is fine. there is heat in the heat core and I had the truck running for hours while working on it (yes I disabled the air bags first) and the temp gauge was fine and consistent, so I assume this is not a thermostat issue. just only air moving through the AC vent. Is there only one blower, is there possibly a door that is failing to channel air through to behind the heater core?

Mechanic's Assistant: Are you fixing your F150 yourself? What have you tried so far?

Just checked the blend door activator- working fine, and removed the fixtures behind the glove compartment to get at the blend door- which is now open. again, air only coming through the AC core on all switch settings..

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Really only intend to get heat going- I don't care about having AC, and will not be replacing the blend door. I just want to get air flowing through the heat core.

Submitted: 6 months ago.Category: Ford
Show More
Show Less
Ask Your Own Ford Question
Answered in 1 minute by:
12/27/2017
Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 6 months ago
HDGENE
HDGENE, Ford Senior Master/Diesel/Trans
Category: Ford
Satisfied Customers: 6,576
Experience: 28 years Auto experience, Ford ,GM, Chrysler, Asian & European
Verified

Hello, and thank you for using Just Answer! My name is***** me a few moments to review your question and Ill do my best to assist you.

Ask Your Own Ford Question
Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 6 months ago

Hello, which blend door where you replacing behind the glove box? You checked the temperature blend door at the bottom center of the ac/heater box? You see it moving back and forth when turning the temperature knob? Do both heater hoses get hot when the truck reaches normal operating temperature?

Ask Your Own Ford Question
Customer reply replied 6 months ago
both heater hoses get hot- note I reported there is heat reaching the heater core, just not air moving through the core, air only comes through the AC core. The blend door is in front of the heater core.
Customer reply replied 6 months ago
I do not wish to pay to have a call. Please respond through this venue.
Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 6 months ago

If you unbolt the temperature blend door and manually move the blend door do you get heat? You said you see the actuator move? The blend door isnt broken? Im confused what you replaced when you said you replaced a blend door.

Ask Your Own Ford Question
Customer reply replied 6 months ago
I reported I was going to replace the blend door- this is assuming there is actually heat moving through the heat core. When I opened it up I discovered the issue is, there was no, is no heat moving through the heat core. There is only air moving through the AC core according to how I set the air volume control- low amount on low setting, increasing according to the volume control I set. I can get a lot of air, but only through the AC core, which is to the right of the heat core which is to the left of the AC core.
Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 6 months ago

Ok you say you have heat at the heater core but no heat at the heater core. Do you see my confusion? You havent said if you removed the temperature blend door at the bottom of the case if the door is broken or if it changes temperature if you move it. Its common to see the temperature blend door actuator/motor fail and it be stuck in one position but you said it is moving fine??? The temperature door is not behind the glove box. its at the bottom center of the dash as shown. Remove it and check its operation and replace if needed.

Ask Your Own Ford Question
Customer reply replied 6 months ago
Please read my full postings. I said I have heat "radiating" off the heater core (behind the blend door) when I place my hand in and in front of it (I have the glove compartment open so I can reach through to the left and inspect the heater core). But, no air is moving through the heater core. No matter what setting I place the dash control switch on (High AC, AC, Floor, Defrost, etc.) air only ever moves through the AC core. The blend door activator works fine... the blend door works fine, but if air does not "switch" from coming through the AC core to coming through the heater core, there is not heated air for the blend door to regulate according to the heat setting switch on the dash. Bot***** *****me, why can I not stop air from moving through the AC core, and begin moving though the heater core.
Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 6 months ago

Do you need more help with this concern?

Ask Your Own Ford Question
Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 6 months ago

If you need more help just let me know If I was helpful, please use the 5 stars above to leave a positive rating.

Ask Your Own Ford Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a ford mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask HDGENE Your Own Question
HDGENE
HDGENE
HDGENE, Ford Senior Master/Diesel/Trans
Category: Ford
Satisfied Customers: 6,576
6,576 Satisfied Customers
Experience: 28 years Auto experience, Ford ,GM, Chrysler, Asian & European

HDGENE is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on.

Rich DUSA

Because of your expertise, you armed me with enough ammunition to win the battle with the dealer. They are installing a fuel filter and fuel pump at no charge to me.

MollyUSA

I needed help with my car on Saturday morning....got a response in 5 minutes, and it was the perfect solution. Thanks again to your service.

Jason V.Kirkland, WA

I do know, after going though this with JustAnswer, that I can somewhat trust my mechanic but I will always contact you prior to going there.

BRNew Jersey

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

< Previous | Next >

Meet the Experts:

Ron

Ron

ASE Certified Technician

25,022 satisfied customers

23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs

Chris (aka- Moose)

Chris (aka- Moose)

Technician

28,993 satisfied customers

16 years experience

John Mc

John Mc

Ford Technician

5,495 satisfied customers

19 years Ford Lincoln Mercury experience

Chuck

Chuck

ASE Certified Technician

1,685 satisfied customers

33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance

Cam

Cam

Journeyman Automotive Technician

10 satisfied customers

GM Grand Master Technician 2007. 14 years Automotive experience.

Mike V.

Mike V.

Auto Service Technician

1,556 satisfied customers

25 years experience on all makes and models, Licensed NYS Inspector.

Richard

Richard

ASE Certified Technician

1,524 satisfied customers

12 years at a Ford Lincoln/Mercury and Jaguar dealer as a technician and shop foreman.

< Previous | Next >

Related Ford Questions
Ford F150 Pickup: I have a 97 f150. 4.6L I have cool air coming
I have a 97 f150. 4.6L I have cool air coming from floor vents and defrost however have heat when placed on panel. The air flow changes with the selected position on the control knob however the temp … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
28,993 satisfied customers
Ford Taurus: Just bought a used 2006 Ford Taurus and Ive discove
Just bought a used 2006 Ford Taurus and I've discovered that neither the air conditioner or the heater work. The blower blows air but if i put the manual setting on ac or max ac, the compressor does n… read more
APenland
APenland
Ford Senior Master Technician
Associate in Industrial Management
3,186 satisfied customers
1997 Lincoln Towncar, running fine, but only blowing hot air
1997 Lincoln Towncar, running fine, but only blowing hot air with clicking sound behind dash. The local shop works on it, replacing the blend door. Now, it only blows cold air and the engine idle puls… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,022 satisfied customers
F250 SUPER DUTY: MY HEATER WORKS FINE AFTER THE ENGINE WARMS
MY HEATER WORKS FINE AFTER THE ENGINE WARMS UP FOR ABOUT TEN MINUTES, THEN THE HEATER CORE IS HOT AND THE FAN MOTOR WORKS, BUT NO AIR BLOWS OUT ANYWHERE. I CHANGED THE CONTROL THAT SWITCHES THE AIR FL… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
28,993 satisfied customers
98 Ford Ranger: only blows..temperature gauge reads..heater fan
I've got a '98 Ford Ranger 3.0 L. The heater only blows cool air. The temperature gauge reads normal. Also recently the heater fan began to operate only on HIGH (when set on high fan setting) or OFF (… read more
Pavlin Koev
Pavlin Koev
Diagnostic Technician
High School or GED
2,687 satisfied customers
1996 f-150: flushed..fluids..operating temperature..blows cold air
have a 1996 f-150 4.9l I just flushed and replaced the coolant system fluids and thermostat. i bring the engine up to operating temperature and turn the heat knob to the red zone and it still only blo… read more
Tim
Tim
Associate Degree
3,172 satisfied customers
1999 Ford Mustang: V6..3.8L..flushed heater core (good flow
1999 Ford Mustang V6 3.8L cannot get heat out of heater. Changed thermostat, flushed heater core (good flow both directions). Radiator has pressure.… read more
Bob
Bob
Vocational, Technical or Trade Scho
205 satisfied customers
Ford f-250: 4x4..blower..work freely and goes from defrost to vent ok
ford f-250 4x4 heat is not getting hot. the switches are fine the blower go up and down works good and the on and off switch work freely and goes from defrost to vent ok but no heat. what it the probl… read more
chris
chris
Ford tech at a dealer
Associate Degree
2,764 satisfied customers
1996 Ranger: s air conditioning..blowing cold air..heater..controls
My son's air conditioning in his 1996 Ranger just stopped blowing cold air. It is blowing hot air on his feet, as if the heater is on the feet setting. He has all of his controls turned to the "off" p… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,022 satisfied customers
1992 ford explorer: 4wd, when the ac is turned on it bpows..vent
Ihave 1992 ford explorer 4wd, when the AC is turned on it bpows out heat, when everything is turned off heat still comes out the vent, can you tell me what is wrong… read more
Chuck
Chuck
ASE Certified Technician
Vocational, Technical or Trade Scho
1,685 satisfied customers
98 taurus: has the 3.0 ohv u motor..heater..core..vent..no ohms
My 98 taurus wagon has the 3.0 ohv u motor and I have problem with the heater not working, the core is okay, no obstructions, all the controls work (a/c, def. vent, floor etc.) I even ckd the potentom… read more
Roadside Jerry
Roadside Jerry
Auto Expert on Just Answer
Vocational, Technical or Trade Scho
2,659 satisfied customers
Termosatat has been replaced both line to heat core are hot and swishs
Heat is not working after termosatat has been replaced both line to heat core are hot and swishs have checked… read more
mustangmike
mustangmike
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
492 satisfied customers
1997 Ford Windstar: V6..All the climate controls work..vents at all
1997 Ford Windstar, 3.8 V6. All the climate controls work, however heat does not come out of the vents at all. What could be the problem? All the hoses are conntected and there are no leaks.… read more
chris
chris
Ford tech at a dealer
Associate Degree
2,764 satisfied customers
1999 Ford Explorer: on 4 hour road trip, temperature not very warm
1999 Ford Explorer. Always use the auto temp. Noticed yesterday while onXXXXXtrip, temperature not very warm. Noticed air coming out of the panel vents was cooler than 72 degrees. Could generate some … read more
Vincent
Vincent
Automotive Technician
High School or GED
808 satisfied customers
1999 ford: LX..My wife drove the car to town..floor to vent..cool air
I own a 1999 ford crown vic LX that has a heater problem. My wife drove the car to town and the heater just would not work. The air can be redirected from the floor to vent then to the defroster and t… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,022 satisfied customers
1997 Ford Ranger: cold air..visually..heater and a/c sections..cab
My 1997 Ford Ranger will not heat. Even with the control set to max, all I get is cold air. I visually checked the baffle door between the heater and a/c sections, that door is wide open for heat to c… read more
Roadside Jerry
Roadside Jerry
Auto Expert on Just Answer
Vocational, Technical or Trade Scho
2,659 satisfied customers
I have a 1998 ford taurus I want to know if the acuator for ...
I have a 1998 ford taurus I want to know if the acuator for the heater core is located on to of the heater box behind glove box?… read more
Rmldaytona
Rmldaytona
ASE certified technician
College
1,050 satisfied customers
98 ford explorer eddie bauer: heat and ac blow cold air.
i have a 98 ford explorer eddie bauer and i have no heat. ac is fine. heat and ac blow cold air. hot water/coolant is circulating through heater core. thermostat is new. climate control console has al… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
28,993 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x