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My 4.6 keeps overheating have replaced heater core

Customer Question
My 4.6 keeps overheating...

My 4.6 keeps overheating have replaced heater core themostate had both engine system flush out but still keeps overheating

Mechanic's Assistant: Have you checked the coolant? Have you checked for a leak in the cooling system?

Yes none

Mechanic's Assistant: What is the model/year of your Ford?

03 f150 kingranch

Mechanic's Assistant: Are you fixing your F150 yourself? What have you tried so far?

Yes myself have replaced head gaskets heater core atifreeeze thermostatesheaderhoses

Submitted: 8 months ago.Category: Ford
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Answered in 1 minute by:
11/29/2017
Ford Mechanic: David Craig, Auto Mechanic replied 8 months ago
David Craig
David Craig, Auto Mechanic
Category: Ford
Satisfied Customers: 6,012
Experience: owner/mechanic at 3D Automotive
Verified

Hi my name is ***** ***** I'll be more than happy to assist you. Please allow me a few minutes to review your information. Thank you

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Ford Mechanic: David Craig, Auto Mechanic replied 8 months ago

with the engine at operating temp are the upper and lower radiator hoses equally hot?

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Customer reply replied 8 months ago
no top is cold
Ford Mechanic: David Craig, Auto Mechanic replied 8 months ago

ok, standby please

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Ford Mechanic: David Craig, Auto Mechanic replied 8 months ago

if the top is cold, the thermostat isn't opening.

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Customer reply replied 8 months ago
thought so so i replaced it 5 different times
Ford Mechanic: David Craig, Auto Mechanic replied 8 months ago

dont take offense but are you sure its not in backward?

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Ford Mechanic: David Craig, Auto Mechanic replied 8 months ago

seen it a lot

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Customer reply replied 8 months ago
works good after it overheats till it cools down then we start all over again
Ford Mechanic: David Craig, Auto Mechanic replied 8 months ago

but the upper hose never gets hot?

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Customer reply replied 8 months ago
gets hot after it overheats
Ford Mechanic: David Craig, Auto Mechanic replied 8 months ago

do a block test

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Customer reply replied 8 months ago
ok thanks
Ford Mechanic: David Craig, Auto Mechanic replied 8 months ago

is the cap under pressure?

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Ford Mechanic: David Craig, Auto Mechanic replied 8 months ago

before a block test, I would make sure you got all of the air out of the system

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Customer reply replied 8 months ago
wasnt at first replaced it now it s fine
Customer reply replied 8 months ago
how do i do that
Ford Mechanic: David Craig, Auto Mechanic replied 8 months ago

standby

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Customer reply replied 8 months ago
ok will try that thanks
Ford Mechanic: David Craig, Auto Mechanic replied 8 months ago

you're welcome and please note customer satisfaction is my number one goal and leaving 3 stars or more rating for me will allow us to continue this dialogue until you are completely satisfied.and your vehicle is fixed. you may ask as many questions as you'd like at no extra charges. thank you have a great day

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Ford Mechanic: David Craig, Auto Mechanic replied 8 months ago

hows it going?

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