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 Ford expert Your Own Question

Ford expert
Ford expert, ASE Certified Technician
Category: Ford
Satisfied Customers: 10370
Experience:  30 yrs,experience shop owner,
22989858
Type Your Ford Question Here...
Ford expert is online now
A new question is answered every 9 seconds

2004 f150 will not start when it gets wet?

Resolved Question:

2004 f150 will not start when it gets wet?
Submitted: 2 years ago.
Category: Ford
Expert:  Ford expert replied 2 years ago.
Welcome to just answer.com. I'm here to help you and your 100% satisfaction is my goal. This can be caused by a number of things but very commonly you'll find water damage were water is leaking down from the windshield into the gem module and the inside fuse box or otherwise known as a central junction box,Check fuse #102 20A in the interior fuse panel first. Verify the fuse is in
place and has battery voltage on both sides. Replace the fuse as needed. If the fuse is OK, access the ignition switch. Check the Light
Green/Violet wire for battery voltage at pin 4 from fuse #102. If
battery voltage is not present, repair the circuit between the interior fuse
panel and ignition switch. If battery voltage is present on the LG/VT
wire, leaving the ignition switch connected and in the RUN position, check for
battery voltage out of the ignition switch on the Dark Blue/Light Green
wire at pin 1, Black/Light Green wire at pin 6, and the Red/Light Green
wire at pin 7. If there is no voltage out on any of the wires, verify
the connections are OK. If the connections are good, suspect a faulty ignition
switch.
Customer: replied 2 years ago.

will not start when it gets wet under the truck. hand wash it's ok. take it in a car wash with a chassis wash, the truck will shut off. normal rain fall it's ok. flooded roads it will shut off. i'm thinking something on the bottom of the truck

Expert:  Ford expert replied 2 years ago.
i'm thinking crank sensor or sensor wiring When cranking the engine over, observe the check engine light. It should be on
Key On Engine Off but go out when cranking the engine. Cranking RPM can
also be monitored on scan tool data. If the light remains on when
cranking, this indicates that the Powertrain Control Module is not
receiving a Crankshaft Position Sensor signal. Disconnect the
CKP sensor and install an AC voltmeter between the 2 pins at the sensor. Crank the engine over and look for AC voltage output, typically
between .7 - 1.2 volts. If the sensor does not output any voltage,
replace the CKP sensor and retest. If the sensor does output good
voltage, check the Dark Blue wire and the Gray wire from the CKP to
pins 47 and 46 of C175e of the PCM for opens or shorts and service as
necessary
Customer: replied 2 years ago.
that idea did not work
Expert:  Ford expert replied 2 years ago.
WHICH ENGINE DO YOU HAVE?
Customer: replied 2 years ago.
5.4 3v
Expert:  Ford expert replied 2 years ago.
Check fuse #32 15, #33 15A, and #34 20A in the Central Junction Box
interior fuse panel with key on for full battery voltage from the Powertrain
Control Module PCM power relay. If none of the fuses have battery
voltage as they should, check fuse #28 5A for battery voltage with key on.
This fuse feeds the PCM power relay to turn it on with the key. If
fuse #28 is OK, remove the PCM power relay relay #203 and verify that there
are two terminals with full battery voltage with key on- one from fuse #28, the
other should be battery voltage at all times and is hard wired to the battery
voltage input to the CJB. If both terminals have battery voltage as they should,
swap the PCM power relay with either the Trailer Tow Parking Lamp Relay #201,
or the Fog Lamp Relay #202 and recheck operation. If fuses 32, 33, and 34 now
have battery voltage, verify the vehicle starts and runs and replace the PCM
power relay as needed.
Ford expert, ASE Certified Technician
Category: Ford
Satisfied Customers: 10370
Experience: 30 yrs,experience shop owner,
Ford expert and 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.