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2011 f150 cranks won't start. Replaced fuel pump still have

Customer Question
problem JA: Have you checked the...
2011 f150 cranks won't start. Replaced fuel pump still have problem
JA: Have you checked the engine's fuel supply? And the spark plugs -- are they all working?
Customer: Fuel good. All new plugs at 100,000 miles. 117,000 now
JA: Are you fixing your F150 yourself? What have you tried so far?
Customer: New fuel pump. Yes
JA: Anything else you want the mechanic to know before I connect you?
Customer: 3.7 motor
Submitted: 5 months ago.Category: Ford
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Answered in 2 minutes by:
6/11/2017
Ford Mechanic: David Craig, Auto Mechanic replied 5 months ago
David Craig
David Craig, Auto Mechanic
Category: Ford
Satisfied Customers: 4,041
Experience: owner/mechanic at 3D Automotive
Verified

Hi Im David, thanks for visiting the site. when you turn the key on can you hear the fuel pump running for a few seconds.

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Customer reply replied 5 months ago
No but I've never noticed that noise.
Ford Mechanic: David Craig, Auto Mechanic replied 5 months ago

can you have someone put their ear to the fuel door while you turn the key on?

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Customer reply replied 5 months ago
It just started. I had a new fuel pump put on last week. Sometimes it starts and sometimes it doesn't. After letting it sit for a few hours it starts. Any ideas? I bet I didn't need a new fuel pump.
Ford Mechanic: David Craig, Auto Mechanic replied 5 months ago

is there any certain times that you notice that it doesnt start? like after driving for a while then shutting it off, then it doesnt want to start until it sits a while?

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Customer reply replied 5 months ago
Usually after it has set all night, but later in the day it does start.
Ford Mechanic: David Craig, Auto Mechanic replied 5 months ago

so after a cold soak. aka sitting overnight. ok. let me look up some things for you.

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Customer reply replied 5 months ago
Thanks amigo.
Ford Mechanic: David Craig, Auto Mechanic replied 5 months ago

thanks for your patience. Im going over 350 tsbs right now so its going to be a while

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Ford Mechanic: David Craig, Auto Mechanic replied 5 months ago

How old is the battery?

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Customer reply replied 5 months ago
Less than a year old and clean terminals
Ford Mechanic: David Craig, Auto Mechanic replied 5 months ago

ok. let me look at some other possibilities.

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Customer reply replied 5 months ago
Ok thanks
Ford Mechanic: David Craig, Auto Mechanic replied 5 months ago

thanks for your patience, im helping 5 other people at the same time...

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Ford Mechanic: David Craig, Auto Mechanic replied 5 months ago

Im going to open this up to others, I dont like for my customers to wait. some one will be with you shortly

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Customer reply replied 5 months ago
Ok thanks man. I understand & nbd.
Ford Mechanic: Mike S., ASE Certified Technician replied 5 months ago
Mike S.
Mike S., ASE Certified Technician
Category: Ford
Satisfied Customers: 7,645
Experience: ASE Certified Master Technician
Verified

Does the fuel pump prime for 2 seconds those times when it don't start? the first few seconds the key is turned to start, the fuel pump should run, does it?

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Customer reply replied 5 months ago
It's a new fuel pump (replaced last week). That is what I had replaced 1st. Next time it doesn't start I'll listen closely.
Ford Mechanic: Mike S., ASE Certified Technician replied 5 months ago

Ok, and when it doesn't start if the fuel pump doesn't run, why wiggling the fuel pump relay and any fuel pump fuses, maybe one is just a little loose.

If it still won't start be prepared with a voltmeter or at least a 12 volt test light to do some testing.

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Customer reply replied 5 months ago
Ok man thanks.
Ford Mechanic: Mike S., ASE Certified Technician replied 5 months ago

ok

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Mike S.
Mike S.
Mike S., ASE Certified Technician
Category: Ford
Satisfied Customers: 7,645
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