Coolant temp sensor

[Mook4949]

Is it more then one coolant temp sensor on the 2004 MM?


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[musclemerc]

Yes
One is for the PCM.
The other is for the electric fan.

[Mook4949]

are they the same size? I asked because I’m having a problem finding the right sensors


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[fastblackmerc]

Is it more then one coolant temp sensor on the 2004 MM?


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Yes there are two of them.

[Mook4949]

Where can I get them from autozone gave me the wrong part twice


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[RubberCtyRauder]

https://www.tascaparts.com/oem-parts/ford-temp-sending-unit-f7dz10884aa/?c=Zz1lbGVjdHJpY2FsJnM9c2VuZGV ycyZpPU1EOTgwOTI1JnI9JmE9bWVyY 3VyeSZvPW1hcmF1ZGVyJnk9MjAwNCZ 0PWJhc2UmZT00LTZsLXY4LWdhcw%3D %3D

[MyBlackBeasts]

are they the same size? I asked because I’m having a problem finding the right sensors


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They may be the same size but they are completely different parts and are not interchangeable.

[Mook4949]

So do they have different names


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[MyBlackBeasts]

So do they have different names


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1 is the ECM coolant temp sensor


1 is the Engine coolant temp sensor


They may show different names on the parts with different manufacturers, look at the part description to tell.


The location on the engine will tell you which one it is.

[RubberCtyRauder]

Coolant sensor here
https://www.tascaparts.com/oem-parts/ford-coolant-temp-sensor-9u2z12a648a/?c=bT0xJmc9ZWxlY3RyaWNhbCZzPXB vd2VydHJhaW4tY29udHJvbCZpPU1EO TgxOTY1JnI9MTImYT1tZXJjdXJ5Jm8 9bWFyYXVkZXImeT0yMDA0JnQ9YmFzZ SZlPTQtNmwtdjgtZ2Fz

[Mook4949]

I seen them on rock auto but I typed the two different names in and the same sensor came up


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[justbob]

I believe one is called cylinder head temp sensor on the Ford computer. Of course their own computer shows the engine as a 2V..

Even the terminals are different between the two so you can’t mix it up.


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[MyBlackBeasts]

Which of the 2 coolant sensors do you want?


If not sure, which side of the coolant tube is the bad sensor on?

[Mook4949]

The diver side


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[justbob]

The diver side


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IIRC that is the PCM one. Let others confirm as it’s been awhile.


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[Mook4949]

Ok thanks


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[MyBlackBeasts]

The diver side

According to my 03 Mercury service manual the Passenger side sensor is the ECT (engine coolant temp sensor) and the drivers side is the CHT (cylinder head temp sensor)

If I'm wrong, someone will chime in.

[Mook4949]

Thanks a lot guys


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[MyBlackBeasts]

ETC: Tasca lists p/n 9U2Z-12A648-A $48 on Amazon with free shipping.
My research may be in error, your results may vary.

[MyBlackBeasts]

CHT: Tasca lists p/n 8I3Z6G004-A $29 on Amazon with free shipping.
My research may be in error, your results may vary.

[MyBlackBeasts]

You are correct, Rock Auto's site lists same p/n for both which is wrong. Their site has an error.


Until they correct it I would get from another source or order the Ford p/n online.

[Mook4949]

Does amazon have the correct parts


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[MyBlackBeasts]

Does amazon have the correct parts


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As far as I can tell according to Tasca site those are correct numbers but I'm not a parts guy.


Either wait till others chime in or stop at your local Ford stealership and ask if the #'s are correct.


If their price is a lot more, tell the parts dude what you can get for online and see if they can match or come close enough that it would be worth paying a little more to get right away.


I'm always negotiating with my guy.


He gives me lots of great deals and once in a while I'll pay asking to let them win occasionally.

[Mook4949]

Thanks


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