A new question is answered every 9 seconds

2001 Mercury mountaineer: it runs fine..fuel pump relay..tester

This answer was rated:

my 2001 Mercury mountaineer is hard starting when its cold sometimes I hear the fuel pump prime sometimes I don't but when it starts it runs fine could this be a relay problem??had it for 2 years with no problem do you know where the fuel pump relay is located?don't have access to a pressure tester
Hello and Welcome to Justanswer,

My name is XXXXX XXXXX I am here to try and assist your with your question.

The problem you are describing could very well be a bad fuel pump relay if you are not hearing the pump cycle on. For the price of the relay, it would be a good place to start. The relay is located in the under hood fuse panel. I have marked it in the diagram.

Customer: replied 5 years ago.
ron are you sure this is the right view of the fuze box
Yes, this is your under hood fuse box.
Customer: replied 5 years ago.
please let me check again thank you
It will have a black cover over it, remove the cover and it will look like the diagram.
Customer: replied 5 years ago.
ok hold on please
No problem, I am here if you need me..
Customer: replied 5 years ago.
thank you I belive the dealer gave me the wrong relay I am going back now be back in 30 min ok?
Ok sounds good.
Customer: replied 5 years ago.
by the way thepcm relay is very warm does that mean anything?

The PCM relay as well as all the relays will get warm but not hot, If it getting hot it may be the faulty relay. THe PCM and fuel pump use the same relay.

Customer: replied 5 years ago.
ok I chaned the relays but must wait untill morning to try I use dry gas fuel injector cleaner and high test gas every fill up . the fuel pump would just quit if it was bad right?

Yes in most cases it will get very noisy and just quit, it wouldnt come and go.
Customer: replied 5 years ago.
my overdrive switch dont work all the time either any idea what this could be

It could be something as simple as the switch, if the light isnt flashing , I would suspect the switch. If the light is flashing , then you will need a code scan done to see what fault codes are stored.
Customer: replied 5 years ago.
I checked the fuze and the computer yesterday no codes and fufe was good
Then it could be the switch.
Customer: replied 5 years ago.
one last thing do you have a view of the 302 where parts are located like the dpfe maf iac ect and pcm items are located? and if my truck starts hard tommrow what should I look for next?

Here is the diagram.

Customer: replied 5 years ago.
just took the truck out in the snow it has alot more power and I canhear the blower kick in its loud but powerful

The relay change should not effect engine power as long as its starting.
Customer: replied 5 years ago.
it always starts when warm but the temp is going down to -5 to 10 tommrow will tell the story
Ok, that sounds like a good plan.
Customer: replied 5 years ago.
what happens if it does the same thing tommrow where do you think I should look next a grage and hook it up to a computer????????

Yes if it still has a problem, then a code scan would be the next step.
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 32581
Experience: 23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
Ron and other Ford Specialists are ready to help you
Customer: replied 5 years ago.
thanks for your time take care and have a good weekend
Your very welcome and thank you very much as well
Ask Ron Your Own Question
Ron , ASE Certified Technician
Category: Ford
Satisfied Customers: 32581
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
Type Your Ford Question Here...
Ron is online now
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.

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
< Previous | 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

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.

Meet The Experts:

  • Ron


    ASE Certified Technician

    Satisfied Customers:

    23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
< Last | Next >
  • http://ww2.justanswer.com/uploads/FO/fordguyu/2015-7-7_172556_onnieew.64x64.jpg Ron's Avatar


    ASE Certified Technician

    Satisfied Customers:

    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)


    Satisfied Customers:

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

    John Mc

    Ford Technician

    Satisfied Customers:

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


    ASE Certified Technician

    Satisfied Customers:

    33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance
  • http://ww2.justanswer.com/uploads/BL/Bluegorilla/2012-6-21_16298_cam.64x64.JPG Cam's Avatar


    Journeyman Automotive Technician

    Satisfied Customers:

    GM Grand Master Technician 2007. 14 years Automotive experience.
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar


    ASE Certified Technician

    Satisfied Customers:

    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:

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