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All diagrams for my CHT not matching up. 2004 f250 SD.

Customer Question
All diagrams for my...

All diagrams for my CHT not matching up

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

2004 f250 SD

Mechanic's Assistant: Are you fixing your F250 yourself? What have you tried so far?

Yep

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Removed intake maifold and it is not there, not do i see any connection on the wiring harness

Mechanic's Assistant: Have you checked all the fuses? Do you have a wiring diagram?

Yes and yes

Submitted: 6 months ago.Category: Ford
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Answered in 1 minute by:
12/23/2017
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago
Jaybird61
Jaybird61, ASE Certified Master Technician
Category: Ford
Satisfied Customers: 2,312
Experience: Automotive Instructor at Palm Beach State College
Verified

Hi, My name is Jay

What engine do you have in your 2004 F250? What is 8th digit in VIN?

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Customer reply replied 6 months ago
5.4 L
4
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

What are colors you have to your sensor now?

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Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago
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Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

The CHT is on top left of fig 4

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Customer reply replied 6 months ago
I see it in the diagram but not on the engine
trying to upload a pic of the engine but file a bit to large
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

In the picture the sensor should be in the hole in the head on right of picture. (The drivers side head) Do you have the connector there?

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Customer reply replied 6 months ago
I agree the cht sensor is not there and no connection to wiring harness
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

Do you know if your engine has been changed before? I will look up a 2003 for you to see if maybe you have a 2003 leftover that was sold as a 2004.

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Customer reply replied 6 months ago
Also threads to small
Customer reply replied 6 months ago
Never been changed.. bought from dealer
Customer reply replied 6 months ago
New
Customer reply replied 6 months ago
Manufacturer date 9/03
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

Check all the way on back side of cylinder head near firewall. Some years they put it there also.

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Customer reply replied 6 months ago
Ty
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

Just checked 2003 also and still says right cylinder head.

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Customer reply replied 6 months ago
Can't see it.. to tight..lol
Customer reply replied 6 months ago
It seems like a different engine due to knock sensor s and o2 sensors not matching up with repair man
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

On earlier 5.4 engines they put in in back side of passenger cylinder head. You would need to look up from bottom.

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Customer reply replied 6 months ago
Ok stand by
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

Ok.

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Customer reply replied 6 months ago
i see a threaded plug there but no connection from wiring harness
Customer reply replied 6 months ago
I see a threaded plug un the head.. no sensor also no connection from wiring harness
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

Okay. Back to original position. Are you sure there is no connector that is in the harness near where sensor hole is? May have been tapped back. Also can you tell me the problem you had in the first place?

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Customer reply replied 6 months ago
Dtc 1289
Customer reply replied 6 months ago
But no harness connection anywhere up front for it. Just the camshaft sensor
Customer reply replied 6 months ago
Temp guage not working, then started running rough.. no limp/ safe mode just rough. Now no mil might
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

I recommend replacing coolant sensor near thermostat housing and see if that fixes the problem and also make sure to replace thermostat. You can test to see if coolant sensor operates gause by jumping two connector pins and turn on key to see if gause moves up or down with jumper in or out.

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Customer reply replied 6 months ago
The man shows that sensor on the intake manifold however mine is solid no sensor there.. have new thermostat ready
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

You do not have a normal engine coolant sensor on the intake near thermostat or look above water pump on housing for the sensor? Ford was crazy these years and moved these sensors all over.

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Customer reply replied 6 months ago
Understand
Customer reply replied 6 months ago
I see it
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

Where did you find it?

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Customer reply replied 6 months ago
From the bottom passenger side next to water pump
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

I do not know why Ford put it there. Do the wire colors match?

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Customer reply replied 6 months ago
No
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

What is the wire colors on sensor?

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Customer reply replied 6 months ago
Red an wht
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

If it is only a 1 wire sensor and is white with red stripe then that is oil pressure switch.

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Customer reply replied 6 months ago
2 wires
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

Only way to be sure would be to take out sensor and see if coolant or oil is behind it.

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Customer reply replied 6 months ago
Red male connector
Customer reply replied 6 months ago
K
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago
Let me know since I am out of other ideas at this point.
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Customer reply replied 6 months ago
May have found cht.. drivers side on block next to a large diameter coolant line.. make any sense?
Customer reply replied 6 months ago
Near front of motor
Customer reply replied 6 months ago
No idea how to get to it to check wires
Customer reply replied 6 months ago
Will do.. sorry for the trouble.. imagine my end?
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

Can you see wire colors or get a picture of it.

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Customer reply replied 6 months ago
Trying now
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

It may be the oil temperature sensor. If it has yellow/blu and a grey/red wires.

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Customer reply replied 6 months ago
Single wire. White red stripe.. oil psi line right
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

Yes oil pressure. Maybe the other sensor is coolant then.

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Customer reply replied 6 months ago
Back to water pump area
Customer reply replied 6 months ago
I am about over it for now.. thank you.. would like to let you know when I get it solved
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

Yes. Try and take out that sensor on water pump area and see if coolant is behind it. Okay let me know? Thanks.

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Customer reply replied 6 months ago
On it now
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

Ok .

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Customer reply replied 6 months ago
That sensor goes into a hard metal line
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

Make sure it is not a/c line with pressure behind it.

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Customer reply replied 6 months ago
Rgr
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

If you want me to i can opt out so another expert can contact you and see if they have anymore ideas. If you bought the truck new from dealer then it should have sensor on cylinder head under intake. Let me know?

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Customer reply replied 6 months ago
It is a/c. I am leaving alone
Customer reply replied 6 months ago
Ok I am done for the day.. Xmas dinner party with family.. thanks again
Customer reply replied 6 months ago
That would be great ty
Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 6 months ago

Enjoy. I will opt out to see if another expert can assist you so do not respond until another expert responds first or will lock question back to me.

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Customer reply replied 6 months ago
Have that..here is the issue none of the repair manuals match up.. it is an original engine. 5.4 Triton.
Customer reply replied 6 months ago
I have removed upper intake and to sensor on driver side or rear of passenger side head. Also no cht sensor found on head, block or wiring harness
Customer reply replied 6 months ago
Knock sensor in valley is all I see
Customer reply replied 6 months ago
Diagram shows fuse 66 correct
Ford Mechanic: David Craig, Auto Mechanic replied 6 months ago

standby

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Customer reply replied 6 months ago
i see a red/ white color wires for eng cool temp guage from cluster to ground. just need to check fuse number
It is located on the bottom of the block drivers side by large dia. coolant line..
Ford Mechanic: David Craig, Auto Mechanic replied 6 months ago

ok

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Customer reply replied 6 months ago
that is a single wire wht /red.. oil psi sensor i guess
Customer reply replied 6 months ago
what fuse?
Ford Mechanic: David Craig, Auto Mechanic replied 6 months ago

for what? the temp sensor?

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Customer reply replied 6 months ago
Cht.. no where to be found
Ford Mechanic: David Craig, Auto Mechanic replied 6 months ago

there is no fuse for the sensor. its a reference voltage generated by the ecm.

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Ford Mechanic: David Craig, Auto Mechanic replied 6 months ago

you need to take the engine apart a bit more. you are missing it. Ill open this up to the others.

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Ford Mechanic: Dan, Technician replied 6 months ago
Dan
Dan, Technician
Category: Ford
Satisfied Customers: 25,969
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
Verified

Here is a picture of a cylinder head off vehicle with the CHT on it, the picture you took is missing the area that it would be located. It is on the front lower half of drivers side toward center of engine. Let me know, thanks.

-

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Ford Mechanic: Dan, Technician replied 6 months ago

Ever get it figured out? Please do not forget to rate answer. Thanks.

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