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
Type Your Ford Question Here...
Glenn is online now
A new question is answered every 9 seconds

98 explorer cranks won;t start,ecm turns the fuel pump briefly,cam

Customer Question

98 explorer cranks won;t start,ecm turns the fuel pump briefly,cam sensor new,ign working no active codes,
Submitted: 4 years ago.
Category: Ford
Expert:  Glenn replied 4 years ago.

hello there,

 

Find the test port for fuel pressure on fuel injector rail, looks like a tire valve with blue cap if still present. It would be best to test the pressure, should be around 70 psi and hold for a few minutes. [at least depress the valve to see if fuel squirts up.. You could also spray some carb cleaner into throttle body to see if it wants to start then, this would confirm a lack of fuel. How old is fuel filter?



Edited by Glenn on 12/22/2009 at 3:07 AM EST
Customer: replied 4 years ago.
no the fuel pump doesn't come on no fuel pressure, the fuel pump relay and roll over switch work, the ecm briefly sends a signal when the key is turned on ,and if you power up the fuel pump it still won;t start ,
Customer: replied 4 years ago.
did you get my respond ?and can the alarm shut down(or not let the engine start ) if so does it shut down the fuel pump circuit ?
Expert:  Glenn replied 4 years ago.
The pats system can, [coded key] but the theft light should be flashing if this were the case. Sounds more like a defective fuel pump, can you hear it run? did you get any fuel from rail?
Customer: replied 4 years ago.
when the key is first turned on the fuel pump comes on for 1 second ( i can power up the fuel pump at the roll over switch , using a power probe ) and the engine still won't start, which leads me tord the anti theft, and yes the anti-lamp is flashing and i asked the owner and she doesn't remember if it flashes shen she startes it and that is when i got involved, so what compontes are in the theft circuit, should we test the circuit to rule it out?
Expert:  Glenn replied 4 years ago.

if your powering up fuel pump circuit,do you have fuel pressure at this point? The pump should run if jumpered, do you hear it?

Try a different spare key if theft light flashes rapidly when attempting to start, this would indicate the pcm is locking out fuel/ This would need a computer scan tool to be able to pull codes from pats module, and check to see if its getting enable signal or not... an obd2 code reader will NOT work for this.

Customer: replied 4 years ago.

when i power up the fuel pump i have fuel pressure,and the engine doesn't start, cranks but doesn't start, when you first turn the key on the fuel pump comes on for 1 second, what does parts stand for and how does the theft shut down the engine, ( fuel pump, injectors ? )

Expert:  Glenn replied 4 years ago.
It will shut down the injector pulse and fuel pump.. also spark on some.. they have changed this up on different model years and I can not remember them all and shop manual is vague. Like I said there is not much you can do with out scanner, check all the fuses and try cycling key from off to on a dozen times or so in a row with out cranking, see if that theft light will go out.
Customer: replied 4 years ago.
sounds like we found out the theft devise is the problem do you know of or can get ahold of the schmetic and/or the components since i only have a scanner (from auto zone )
Customer: replied 4 years ago.
how can i or do you have a schmetic for the factory alarm and /or compontents
Expert:  Glenn replied 4 years ago.
I will get that to you, its not going to do you much good though.
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 11 other Ford Specialists are ready to help you
Customer: replied 4 years ago.
thankyou can you please send it to XXXXX@XXXXXX.XXX and again thankyou matthew
Expert:  Glenn replied 4 years ago.
graphic
Customer: replied 4 years ago.
is there any way to reset the alarm system ( i cycled the key on and off 10 times with/out starting the engine )
Expert:  Glenn replied 4 years ago.
No reset, its not reading the key properly. They are a pain to diagnose even when you have the proper equipment and shop manual.

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.