How JustAnswer Works:

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

Ask chris Your Own Question

chris
chris, Ford Mechanic
Category: Ford
Satisfied Customers: 3108
Experience:  ASE Master -Ford senior master-20 years experience
9504203
Type Your Ford Question Here...
chris is online now
A new question is answered every 9 seconds

I have a 1997 ford f150 with no heat..the thermostat has been

Resolved Question:

I have a 1997 ford f150 with no heat..the thermostat has been changed ,radiator has been flushed ,fans are working but still no heat??
Submitted: 4 years ago.
Category: Ford
Expert:  chris replied 4 years ago.

Hi there

 

 

The first thing we have to check is if the heater hoses going to the heater core are getting hot ---open the hood and on the passengers side of the fire wall you will see both heater hoses going into the fire wall,,,, start the truck up and let it warm up,,,then put your hand on both heater hoses as close to the fire wall as you can ,,,and see if BOTH hoses are getting hot ,,,if they are then your heater core is OK

 

 

if the heater core checks out ok,, then next we have to see if you have a bad blend door motor ,,or the door that the motor turns is broken ,,,, you will need a flash light ,,,,

 

the blend door motor is located in the center of the dash ,,at the very bottom of the dash ,,it controls cold and hot air flow ,,it turn a door inside the dash ,,,the motors tend to go bad and the door it turns tends to brake ,,,,

 

to check the motor and door,,,start the truck up and then enter the truck from the passengers side door and get on the floor between the seat and dash ,,,,,at the very center of the dash there is a panel that looks like this

 

graphic

 

pop off the right side off it ,,there is a push pin holding it in place,, just pull on the panel and it will pop out ,,then you can see behind this panel,, now there you will see the motor ,,it has a small white conector to it ,,, looks like this but it sits horizontal

 

graphic

 

 

turn the a/c ON ,,,and play with the temp control knob ,,move the knob all the way to cold and all they way to hot ,,,with your flash light look at the top of the motor ,,,you will see there is a shaft comeing out of the motor that should turn back and forth as you turn the a/c temp control knob ----------as you turn the knob the motors shaft should turn ,,if it does not ,,,then the motor is bad and this is why you do not have heat ---

 

if the motor does move ,,, then take a very close look at the shaft on the motor ,,look at the black part that it goes into ,,,,does it look cracked at all,, ???? if it does ,,,, then the door that the motor turns is bad and needs to be replaced

 

 

tell me what you find,,we can go back and forth on this page

 

Chris

Customer: replied 4 years ago.
Chris,when holding both heater hoses next to the firewall one is hot the other is cold.
does this mean I need to replace the heater core?
Expert:  chris replied 4 years ago.

It could mean you need to replace it ,,,

 

 

 

but lets try this ,,,, the HOT hose is the inlet tube to the heater core ,,,and the COLD hose is the outlet hose to the heater core ,,,, make sure you know witch is witch and then remove both hoses ,,,,

 

then take a garden hose and back flash the heater core on the OUTLET side of the heater core ,,,the cold side ,,,to try to flush all the junk out of it ,,,, take your time and flush it good ,,,, then put the hoses back in place and let the truck warm up and see if you have heat ,,,,if you do ,,,then your good to go ,,,if not ,,,,then you have to replace it

 

Chris

chris, Ford Mechanic
Category: Ford
Satisfied Customers: 3108
Experience: ASE Master -Ford senior master-20 years experience
chris and other Ford Specialists are ready to help you

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 D USA
< Last | Next >
  • 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 D USA
  • 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. Molly USA
  • 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. BR New 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 P Elm 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. Phil Marysville, CA
 
 
 

Meet The Experts:

 
 
 
  • Ron

    ASE Certified Technician

    Satisfied Customers:

    20942
    23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
< Last | Next >
  • http://ww2.justanswer.com/uploads/FO/fordguy4u/2011-12-17_222940_HPIM1257.64x64.JPG Ron's Avatar

    Ron

    ASE Certified Technician

    Satisfied Customers:

    20942
    23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka- Moose)'s Avatar

    Chris (aka- Moose)

    Ford Technician

    Satisfied Customers:

    22382
    16 years experience with Ford.
  • http://ww2.justanswer.com/uploads/JM/jmcdo28/2012-2-23_01655_resized.64x64.jpg John Mc's Avatar

    John Mc

    Ford Technician

    Satisfied Customers:

    5493
    19 years Ford Lincoln Mercury experience
  • http://ww2.justanswer.com/uploads/wmarti7/2009-4-18_04332_Avatar.jpg Chuck's Avatar

    Chuck

    ASE Certified Technician

    Satisfied Customers:

    1684
    33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    1518
    12 years at a Ford Lincoln/Mercury and Jaguar dealer as a technician and shop foreman.
  • http://ww2.justanswer.com/uploads/BA/baddad1/2014-4-1_23659_avatar.64x64.jpg Mike V.'s Avatar

    Mike V.

    Auto Service Technician

    Satisfied Customers:

    789
    25 years experience on all makes and models, Licensed NYS Inspector.
  • http://ww2.justanswer.com/uploads/lostrider/2009-9-26_23144_php4VNWAA_c1PM1.jpg lostrider's Avatar

    lostrider

    Ford Technician

    Satisfied Customers:

    2940
    ASE Master Technician, Ford Senior Master Technician,Diesel certified, ASE Master, 22 yrs FORD exp.