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 Glenn Your Own Question

Glenn
Glenn, Senior Master Ford Tech
Category: Ford
Satisfied Customers: 1745
Experience:  26 years exp with Ford Products, ASE Master Auto & Truck + advanced engine perf L1/L2 Gas & Diesel
3389900
Type Your Ford Question Here...
Glenn is online now
A new question is answered every 9 seconds

2000 Explorer Sport: no fuel pressure at rail..fuses..relays

Customer Question

2000 Explorer Sport Canada made no fuel pressure at rail. All fuses and relays good fuel cutoff switch good. Replaced fuel pump still cannot even hear the pump when you turn ignition on for the first 3 or 4 seconds when it builds pressure. Any ideas?
Submitted: 6 years ago.
Category: Ford
Expert:  Glenn replied 6 years ago.

Hello there,

Are you saying you have 12 volts across the fuel pump wires [for 3 seconds] and the pump does not run? Put a hose down filler pipe to listen with. Have you replaced the fuel filter?

Customer: replied 6 years ago.
Checked Voltages at fuel pump relay 12v base and 12v PCM there. Did not change the fuel filter because I cannot hear the fuel pump come on for the 5 or so seconds when you turn the ignition switch on.
Did notice with 2 gal of fuel in tank the fuel gage is past the full mark.
Expert:  Glenn replied 6 years ago.

Ok I do not think you proved voltage is being sent to fuel pump. Measure for voltage at the inertia switch [fuel cut off] on the pass side firewall under dash. See diagram Pink/Black wire, this should have 12v for a few seconds.

graphic

Glenn, Senior Master Ford Tech
Category: Ford
Satisfied Customers: 1745
Experience: 26 years exp with Ford Products, ASE Master Auto & Truck + advanced engine perf L1/L2 Gas & Diesel
Glenn and 5 other Ford Specialists are ready to help you
Customer: replied 6 years ago.
I have 6.6 v on the dg/ye terminal and 0 v on the pk/bk terminal have 3 relays all the same pcm starter and fuel pump moved all around with same results does this mean the PCM is bad or something else??? Can i jumper across the 3 and 5 terminal and see if I get fuel pressure?? Does the ignition switch supply the voltage to this relay??
Customer: replied 6 years ago.
Had wrong relays will try something and get back.
Expert:  Glenn replied 6 years ago.

Yes jump 3 & 5 should result in 12 v at the dg/ye, if so replace the relay..

The pk/bk should have had the same 6.6v , push the red button down to see if its tripped. Ohm out the fuel cut off switch terminals [wires disconnected] it needs to be under 5 ohms, if not replace it.

Customer: replied 6 years ago.
Here is what I have on inertia switch

dg/ye switch on 2/3 seconds 12v then 6.6v

pk/bk 0v

on fuel pump relay

key off

pin 3 12v

key on

pin 3 12v

pin 5 6.6v

pin 2 12v

This all looks ok could they have sold me the wrong fuel pump?? I did not get it at Ford but I am ready to take it out and go to Ford.
I will accept your reply. I have to leave for the week to go to Chicago will work more next weekend
Thanks
Expert:  Glenn replied 6 years ago.
The enertia switch needs to pass the same voltage, it sounds defective. Remove it and ohm it like I said previously!! or jump the wiring there and see what happens!
Customer: replied 6 years ago.
Jumpered inertia switch no fuel pressure ohmed switch open when poped continunity when closed i must get ready to leave but will accept what you did i think they sold me a wrong pump since my fuel gage reads backward thanks for the help i will figure this out when i get back next weekend.
Expert:  Glenn replied 6 years ago.
Ya souding like it..When you get back to the problem, unplug the fuel pump and recheck the voltages. Did you have to wire in that pump?

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.
 
 
 

Related Ford Questions

Chat Now With A Ford Mechanic
Glenn
Glenn
Senior Master Ford Technician
1623 Satisfied Customers
26 years exp with Ford Products, ASE Master Auto & Truck + advanced engine perf L1/L2 Gas & Diesel