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My 07 expedition shutsoff it won't start just idle a few hrs

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later it will start fine...
My 07 expedition shutsoff it won't start just idle a few hrs later it will start fine for a few more days and shutoff again,it's not the fuel pump or starter.
Submitted: 1 year ago.Category: Ford
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Answered in 35 minutes by:
9/28/2016
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago
David Craig
David Craig, Auto Mechanic
Category: Ford
Satisfied Customers: 3,997
Experience: owner/mechanic at 3D Automotive
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Hi Im David, when this happens do you get a check engine light?

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Customer reply replied 1 year ago
No,it just shutsoff, it cranks for a few seconds and shutoff.
Customer reply replied 1 year ago
The next day it will start and work fine,no engine light no nothing,after a few days it shutsoff again
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

man intermittent problems are sooo difficult to diagnose, especially online. i wonder if the ignition switch is overheating at times.

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Customer reply replied 1 year ago
Would that shut the engine off?
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

absolutley

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Customer reply replied 1 year ago
I really wouldn't know if the switch is over heating.
Customer reply replied 1 year ago
Right before it completely shutsoff, it feels like no gas is going in,almost like if you're running out of gas,I took it to a shop and the checked pump and filters all was good,good pressure,no codes.
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

let me see if there are any tsb's on this issue.

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Customer reply replied 1 year ago
Cool
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

what engine is in that thing?

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Customer reply replied 1 year ago
It's a 5.4.
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

5.4 triton 3v?

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Customer reply replied 1 year ago
It is a triton,not sure on the 3v,I checked the engine it just says triton
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

its a 3V if its a triton........

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Customer reply replied 1 year ago
Ok
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

Ford sued over latent defects in vehicles equipped with the 5.4L engine

Ford Motor

Posted on January 10, 2013

The complaint alleges that between 2004 and 2008, Ford manufactured, assembled and marketed a host of products containing latent defects.

Since calendar year 2005 and up until 2012, the Defendant has been aware of consumer complaints regarding a Class of Vehicles (equipped with the 5.4L engine) identified and described more fully below. These complaints have been made directly to Defendant and/or submitted to the National Highway Traffic Safety Administration (“NHTSA”), Office of Defect Investigation.

This Class of Vehicles suffered from defects in design and/or manufacture, which has led to the following performance and safety issues: acceleration hesitation, loss of revolutions per minute (“RPM”), stalling, loss of power (including loss of power at high rates of speed), sudden and intermittent deceleration and other similar and potentially life-threatening malfunctions (hereinafter referred to as “Engine Problems”).

The Engine Problems are the result of defects in the following vehicle systems and components: the Powertrain Control Module (PCM), the Transmission Control Module (TCM), the Electronic Throttle Control (ETC) and/or the Throttle Body Assembly.

In August 2008, as proof of knowledge of the Engine Problems, Defendant issued a Technical Service Bulletin (“TSB”) to notify its dealership network (and others in the service and repair industry) of the procedures necessary to rectify the defects.

Although Defendant recognized in 2008 that many of its vehicles contained Engine Problems, it actively concealed from the public, and the owners of this Class of Vehicles, the need to perform certain services and/or repairs to remedy these defective and potentially life threatening conditions.

Defendant chose not to inform its dealership network, or others who received the TSB, that the aforementioned Engine Problems were under Express Warranty, which the defendant was under a contractual duty to service and/or repair. Concealment of these Engine Problems was orchestrated to minimize and/or avoid the defendant’s contractual responsibility to the Plaintiff class of owners.

The applicable express warranty related to the Class of Vehicles and Engine Problems at issue is 8-years or 80,000 miles, whichever occurs first. The Engine Problems in this case did not arise in the named Plaintiffs’ vehicles until 2012, at which time the breach of warranty was discovered and realized.

Class: “Current owners of all 2004 through 2008 Ford passenger car and light truck vehicles sold in the United States and equipped with a 5.4 L engine and which include the original Powertrain Control Module (PC’M), the Transmission Control Module (TCM), the Electronic Throttle Control (ETC) and/or the Throttle Body Assembly. The class of vehicles is limited to those delivered within 8 years and having less than 80, 000 miles.”

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Customer reply replied 1 year ago
Ok,What do you suggest,does that mean I might be under warranty?
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

no, thats just some information to let you know that this engine is plagued with lots and lots of problems.

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Customer reply replied 1 year ago
I called the dealer and they don't guarantee they can find problem but they will charge me $140 to inspect.
Customer reply replied 1 year ago
Lol
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

it is my opinion, that if you are not experiencing any rattling noises near the front of the engine, no tapping/slapping, then i believe you may be dealing with a crankshaft position sensor problem

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Customer reply replied 1 year ago
Yeah,it makes no sound,no tapping,it just feels like no gas is going through, and just shutsoff, and won't start after,when I turn the key it gets stuck idling for like 4to5 seconds but won't start.
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

i have seen these type of intermittent problems be caused by an iffy cps...a lot of times it doesnt set a fault code either.

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Customer reply replied 1 year ago
Ok I'll look into that,thank you David,if you think of anything else I would appreciate it.
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

i will keep thinking about it.

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Customer reply replied 1 year ago
Thank you
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

replace the egr solenoid and crank sensor. there has been a multitude of fixes for this condition on my IATN website.

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Customer reply replied 1 year ago
Ok,I'll do this today.wish me luck,thanks.
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

let me know

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Customer reply replied 1 year ago
Sounds good,thank you.
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

any luck?

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Customer reply replied 1 year ago
I went to auto zone but won't get my parts till tomorrow,I drove the expedition all day and it's been running fine, but I'm sure it will shutsoff soon,it last 2 days last time.
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

ok...

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Customer reply replied 1 year ago
Ok now I get a code it's U0100.
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

ok. let me look that up.

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Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

The generic OBD trouble code U0100 is a serious situation where the signals between the electronic control module (ECM) or the powertrain control module (PCM) and a particular module have been lost. There could also be a problem with the CAN bus wiring disrupting communications. The vehicle will simply shut off at any time and will not restart as long as communications are interrupted. Most everything on present day vehicles is computer controlled. The engine and drivetrain are completely controlled by a computer network, its modules and actuators. The U0100 code is generic inasmuch as it has the same frame of reference on all vehicles. Somewhere within the CAN bus network (Controller Area Network) an electrical connector, wiring harness, module has failed, or the computer has crashed. The CAN bus allows microcontrollers and modules, as well as other devices communicate independently of a host computer. The CAN bus was designed for the automobile specifically.

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Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago

thats the whole issue.

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Customer reply replied 1 year ago
I chased all my wire harness all look good except one, the protective sleeving was all crisp and wires were contacting the side of engine (hot),you think that would cause miss communication?
Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago
i really do
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Ford Mechanic: David Craig, Auto Mechanic replied 1 year ago
i do believe that woyld cause it
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David Craig
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