Ford

Have Ford Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Ford
This answer was rated:

1999 Lincoln Navigator: blows out cold air..come on and blow hot air

Hi there, i have a...
Hi there, i have a 1999 Lincoln Navigator. The problem is with the heating system, even when the heat is turned up full it still blows out cold air. Every now and again it will come on and blow hot air out but very rarely. All the dash heater controls work, the temp switches, the switches that direct the air flow in the cabin and the fan blower control. The only problem is that 99% of the time the car will not blow out hot air even when the tempreture control is at its highest level. This is also the case when the controls are set to auto. Can somebody give me an idea of what the problem may be?
Show More
Show Less
Ask Your Own Ford Question
Customer reply replied 9 years ago

1999 Lincoln Navigator 5.4 V8


Already Tried:
I have taken the vehicle to a mechanic and an auto electrician and also supplied wiring diagrams (which i got earlier of another expert on this website) but i live in Northern Ireland and to tell you the truth these guys, because it is an American car, seem to be clueless in what they are doing and seem to be fobbing me off with answers so they can screw me out of more money.
Answered in 9 minutes by:
11/11/2008
Virtual Wrench
Virtual Wrench, Ford Mechanic
Category: Ford
Satisfied Customers: 14,620
Experience: 35 years Master Mechanic
Verified

Hello,

 

Has the thermostat been replaced?

Ask Your Own Ford Question
Customer reply replied 9 years ago
Hi there thanks for the quick reply, i bought the vehicle 5 months ago during the summer, so to tell you the truth im not sure if the thermostat has been replaced. What i do know is the vehicle was running of at least on cylinder and i had to have two coils replaced and the spark plugs. When the mechanic tried to remove the spark plugs he found they where ceased in so it does not seem as if much maintenance has been done on the vehicle so the chances of a thermostat being replaced is very low.

Thank you,

 

99% of the time its going to be the thermostat opening up too soon and not allowing the engine coolant to get hot enough to allow the heater to work right. Now this is providint that the coolant fluid level is full. It is VERY common to do this. It's a simple repair and the parts cost less than $15. I have included the instuctions for replacing it, maybe its something you feel comfortable doing yourself, if not, just show the shop and they will know what to do.

 

graphicgraphicgraphicgraphic

 

 

If you have any further questions, please feel free to reply.

If not, please click on ACCEPT

Thanks for asking!

Virtual Wrench
Virtual Wrench, Ford Mechanic
Category: Ford
Satisfied Customers: 14,620
Experience: 35 years Master Mechanic
Verified
Virtual Wrench and 87 other Ford Specialists are ready to help you
Ask your own question now
Ask Virtual Wrench Your Own Question
Virtual Wrench
Virtual Wrench
Virtual Wrench, Ford Mechanic
Category: Ford
Satisfied Customers: 14,620
14,620 Satisfied Customers
Experience: 35 years Master Mechanic

Virtual Wrench 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

24,320 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

28,139 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.

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.

Mike V.

Mike V.

Auto Service Technician

1,380 satisfied customers

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

< Previous | Next >

Related Ford Questions
I want to know what wires go to what spark plug for a1993
I want to know what wires go to what spark plug for a1993 ford ranger 4.0 4x4 … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
I just replaced my spark plugs and coil packs in my 2006
I just replaced my spark plugs and coil packs in my 2006 F150 5.4L. The truck runs fine when driving and idles just fine, but when I put it in reverse or in drive the RPM's drop and some times it shut… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,320 satisfied customers
It cranks but wont start. I changed spark plugs it started
yes I changed spark plugs it started right up drove for 2 days and wont start again … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
A few days ago change 2 engine coils and spark plugs and the
a few days ago change 2 engine coils and spark plugs and the engine light when off, but now came on again … read more
eurotec
eurotec
Vice President / Manager
Associate Degree
11 satisfied customers
I have a 1988 Ford F150 with a frozen spark plug, #5 on the
I have a 1988 Ford F150 with a frozen spark plug, #5 on the I6 motor. What can you suggest to get it out?… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,320 satisfied customers
I have a seemingly stripped spark plug in my 2008 F150. I've
I have a seemingly stripped spark plug in my 2008 F150 … read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,320 satisfied customers
2001 ford taurus i have replaced spark plugs and wires its
2001 ford taurus i have replaced spark plugs and wires its still skipping on # 4 … read more
Jared D
Jared D
Shop Supervisor
Bachelor\u0027s
3 satisfied customers
2000 Escort zx2; just replaced spark plugs and now runs
2000 Escort zx2; just replaced spark plugs and now runs rough - as though timing is a bit off. This car was not used for a long time. I have revived it for road use, but not changed anything for the e… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,320 satisfied customers
2005 Ford Expedition Replace all the spark plugs and coils
2005 Ford Expedition Replace all the spark plugs and coils after replacing car shack really bad… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
Getting spark to distributor but not to spark plugs. 1986
getting spark to distributor but not to spark plugs. 1986 ford ranger. 4 cylinder 2.3 liter engine … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
I'm trying to replace the number 4 spark plug on a 2004 Ford
I'm trying to replace the number 4 spark plug on a 2004 Ford F-150 5.4L v8 Triton engine. It seems like the spark plug socket isn't grabbing the plug, and it just keeps spinning around. … read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,320 satisfied customers
I have a spark plug in an Explorer that is stuck and now the
I have a spark plug in an Explorer that is stuck and now the spark plug is stripped … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
Changed thermostat and still get no heat. Coolant is down a
Changed thermostat and still get no heat JA: Have you checked to make sure the thermostat is working? What about the coolant level? Customer: Coolant is down a little JA: What is the model/year of you… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
The coolant line from the thermostat to the reservoir broke
The coolant line from the thermostat to the reservoir broke ant the T connection. I have it apart but need to know the easiest way to get the new line around behind the engine and the torque specs for… read more
Dan
Dan
Dealership Technician
Associate Degree
1,772 satisfied customers
Check engine light after changing spark plugs, stays on,
check engine light after changing spark plugs JA: Does the light stay on, or does it blink? Customer: stays on JA: What is the model/year of your Ford? Customer: 1992 F15 4.9 JA: Are you fixing your v… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,320 satisfied customers
Oil in spark plug well of ford 5.4 Triton engine. 3000
yes, Was told there was blown out plug, so am pulling plugs one by one to check. This is the one passenger side closest to cab … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,393 satisfied customers
Overheating has new thermostat no leaks, Coolant is full and
A local mechanic where I got the truck from has been looking at it and he changed the thermostat … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,388 satisfied customers
L loosen the spark plug on passenger side and 2nd spark plug
Hi l loosen the spark plug on passenger side and 2nd spark plug from front, l can't pick up .l think it's lean on the side, it's very tight place but l deal with it, then nothink work's. Thank you. It… read more
Kenny Z
Kenny Z
Ford Senior Master Technician
High School or GED
16 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