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I have a 2002 Ford e450 7.3L Econoline shuttle bus. The

Customer Question
engine just shuts off after...
I have a 2002 Ford e450 7.3L Econoline shuttle bus. The engine just shuts off after driving awhile, and will not start again for several hours. Cranks fine, just acts like its vetting no fuel. I verified the fuel shutoff inertia sensor was good, the fuel pump is running when touched by hand, I replaced the fuel filter on top of engine, and replaced the CPS. Still randomly shuts off after awhile and I have to wait for several hours and hope it will restart
Submitted: 11 months ago.Category: Ford
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Answered in 1 minute by:
8/6/2017
Ford Mechanic: Pete, Auto Service Technician replied 11 months ago
Pete
Pete, Auto Service Technician
Category: Ford
Satisfied Customers: 33,024
Experience: Over 17 years diagnosing and repairing automobiles various makes and models with some training and certifications.
Verified

Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.

Have you had the fault codes checked at all to see what codes are set in all computers with this issue here?

Let me know,thanks Pete.

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Customer reply replied 11 months ago
No, the engine light doesn't come on
Ford Mechanic: Pete, Auto Service Technician replied 11 months ago

O.k.,even though the light is not on have you had the codes checked at all to be sure no codes are set?

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Customer reply replied 11 months ago
I don't have a scan tool. I am doing roadside troubleshooting. What else can I check to figure out why it shuts off
Ford Mechanic: Pete, Auto Service Technician replied 11 months ago

Unfortunately I am unable to place a call on this here myself but others see you have requested a call and may still call on this here.I can however continue here.

Since the cps was replaced ( as this was a common cause for this issue ) and it still stalls out like you see here the next thing to check is fuel pressure.Even if you can feel the pump run this indicates it runs but does not indicate the pressure is o.k.It may be losing fuel pressure due to the pump being weak and is causing this fault here.Here is the test specifications:

Fuel Pressure

Idle ........................................................ 310 kPa (45 psi)

WOT at full load ......................................310-551 kPa (45-80 psi)

If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service,your 5 star rating is appreciated ( should be a link to click on here or above).You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.

Thanks Pete

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Customer reply replied 11 months ago
would a weak or intermittent fuel pump cause a fuel pressure loss intermittently for the engine to shit down? Like, when it gets hot?
Ford Mechanic: Pete, Auto Service Technician replied 11 months ago

Yes t can.The fuel pump can act up intermittently causing this issue here.I have seen fuel pumps act up like this here before in the past with it needing replaced.

Let me know if you need anything else and feel free to rate my help here or above ( should be a link to click on ) as this is how I receive credit for my time,this can be done at any time and you can still come back here and reply if needed.Your 5 star rating is appreciated

Thanks Pete

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