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 c-pete Your Own Question

c-pete
c-pete, ASE Certified Technician
Category: Ford
Satisfied Customers: 30
Experience:  Ford, Lincoln, Mercury Technician
5578340
Type Your Ford Question Here...
c-pete is online now
A new question is answered every 9 seconds

2002 Ford Escape: high speed..the engine has warmed..temperature gauge

Resolved Question:

I have a 2002 Ford Escape 3.0 engine. The problem is that both cooling fans come on at a high speed soon after the engine has warmed to operating temperature and never shut off until the engine is stopped. The temperature gauge indicates normal operating temperature.
Submitted: 6 years ago.
Category: Ford
Expert:  c-pete replied 6 years ago.

Hi, there is several items that can cause this concern. I have a few questions that will help me help you.

Does the heat and a/c work? wil the cooling fans stay on when climate control is off? Is the coolant at the proper level in the reservoir? After the engine is warm and the cooling fans turn on, is the radiator hot or cool (don't burn yourself), does the air from the fan feel hot?

 

Chris

Customer: replied 6 years ago.
The heat and a/c both work great...although it's a little hard to tell how well the a/c is working as it is less than 40 degrees outside. The cooling fans continue to run whether or not the climate control is off. The coolant is at the proper level and remaining there. After the fans turn on, I checked the radiator and it feels cold to the touch and the air coming off both cooling fans is cool/cold. The dashboard temperature gauge never goes over the midpoint. The large radiator hose is hot. Additional information: This problem did not become apparent until after I replaced the thermostat this winter to improve the amount of heat coming from the heater. Once the cooling fans turn on, they are on for good until the ignition is turned off. It doesn't matter whether or not you are driving down the freeway in below freezing tempatures or sitting at a stoplight. It does, however, take awhile for the fans to turn on and we have noticed it takes less time for them to start as the outside temperature has slowly risen.
Expert:  c-pete replied 6 years ago.

Hi, it is possible that the new thermostat is opening too late and opening just above the the fan turn on temp. causing the fan to run all the time after the vehicle is warmed up. The engine computer will turn the high fan on around 220' F. If the thermostat is opening at 225' F then the engine will never run cool enough for the fan to turn off. this would still keep the guage in the normal range. What brand thermostat was used? what part number was it? Was the thermostat installed correctly? See if the radiator gets hot after the engine gets a little warmer (engine will heat up quicker if the heat is off). Is there anything blocking the flow of air across the radiator? Where is the temp guage when the fans turn on?

The easy way to diagnose this would be to hook up a scan tool and monitor the coolant temp and fan commands to see if the fans are working per the engine control computer. There may be a concern with the temp sensor or a wire harness issue.

Does the fan start at a low speed at first before the high fan turns on?

Do you have a scan tool? Do you have a digital volt meter?

check to see if you think the t-stat is not opening soon enough. see if the engine will over heat with the heat off.

Let me know what you find at I will get back with you on Monday.

chris

Customer: replied 6 years ago.
Your request for info has lead me to resolution of this problem. It turned out that the t-stat was defective (from day one) and was not allowing any coolant into the radiator. I replaced the thermostat again this evening with a NAPA brand (spec is 188 degree)and all is now good. The radiator is again heating up and the cooling fans are not running at all...yet. To answer the questions you asked, it was a $5 t-stat from O'Reily Auto Parts and I don't know the p/n and it was installed correctly. The radiator had no air blockage and the cooling fans were coming on with the temp gauge at the midpoint. I was unable to determine if the cooling fans were starting on low and switching to high.

Thank you for your help. How can I pay?
Expert:  c-pete replied 6 years ago.

Great, I thought this was going to be a painful road to a solution. All you have to do is accept the answer.

Chris

c-pete, ASE Certified Technician
Category: Ford
Satisfied Customers: 30
Experience: Ford, Lincoln, Mercury Technician
c-pete and 12 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.
 
 
 
Chat Now With A Ford Mechanic
c-pete
c-pete
30 Satisfied Customers
Ford, Lincoln, Mercury Technician