Oil pressure sensor indicator

[JohnC]

Hi, searched the forum and online looking for this Oil pressure sensor indicator on engine and temperature indicator on engine. I think I found the oil pressure sensor, behind the oil filter

25597 yellow arrow?

Where would I find the temperature indicator on engine

Thanks

[Mark Norris]

It is located in top of the induction manifold at the base of the thermostat housing at the driver's side/front of the engine. It will look like a brass hex with two spade connector sticking out with a wire connected to one of them.

Take a look at this posting and scroll down until you see the large photos from Holger and you'll see it on the 2nd photo in his posting;

https://www.markiiforum.com/showthread.php?9350-Temperature-gauge-failure-straw-pole&highlight=temperature+sender

If yours is missing here's a new old stock one on Ebay;

https://www.ebay.com/itm/313886925906?hash=item49151e6452:g:qpEAAOSwd-phk8Ff

[JohnC]

It is located in top of the induction manifold at the base of the thermostat housing at the driver's side/front of the engine. It will look like a brass hex with two spade connector sticking out with a wire connected to one of them.

Take a look at this posting and scroll down until you see the large photos from Holger and you'll see it on the 2nd photo in his posting;

https://www.markiiforum.com/showthread.php?9350-Temperature-gauge-failure-straw-pole&highlight=temperature+sender

Got it...right behind the housing...I'm missing that too...the photo I posted...is that the oil pressure sensor?

[Mark Norris]

Got it...right behind the housing...I'm missing that too...the photo I posted...is that the oil pressure sensor?

Yes that's where the oil pressure sender is located but I suspect you have the wrong sender fitted (does the gauge show 50 - 60 psi when the engine is running at circa 1,500 - 2,000 rpm). You need a FoMoCo (KS made) 12V 80 psi sender. In 1956 I understand Ford switched to 12V instrument systems for a short period. Here is the correct sender also on Ebay;

https://www.ebay.com/itm/403405760062

[JohnC]

Yes that's where the oil pressure sender is located but I suspect you have the wrong sender fitted (does the gauge show 50 - 60 psi when the engine is running at circa 1,500 - 2,000 rpm). You need a FoMoCo (KS made) 12V 80 psi sender. In 1956 I understand Ford switched to 12V instrument systems for a short period. Here is the correct sender also on Ebay;

https://www.ebay.com/itm/403405760062

Thanks for your quick response and the link....i can run the car but not check the gauges because most of the dash is out because of a bunch of melted wires i discovered and while I took out the right side cowl following these bad wires, I saw I was missing large hose to connect the defrost to the dash. The small one is still there....but this is a problem for another day..:)

[Knickoliss Iv]

Hello John, here is a photo of the engine from the shop manual where I have highlighted to oil sender.
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[Mark Norris]

To build on what Knick posted here is a further image again from the service manual page 298;

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This shows the sender and clamped onto it a radio interference suppressor. There is a similar suppressor on the gas tank level sender under the inspection hatch in the trunk floor. These a) prevent the bimetallic contacts inside from sparking and eventually failing, and b) by preventing the sparking they also stop radio waves from being omitted and interfering with the console radio reception.

[JohnC]

To build on what Knick posted here is a further image again from the service manual page 298;

25599

This shows the sender and clamped onto it a radio interference suppressor. There is a similar suppressor on the gas tank level sender under the inspection hatch in the trunk floor. These a) prevent the bimetallic contacts inside from sparking and eventually failing, and b) by preventing the sparking they also stop radio waves from being omitted and interfering with the console radio reception.

Hey Mark..located it in book..thanks...so one lead goes to the oil gauge and the other looks like it goes to some sort of capacitor (radio interference suppressor)? Am I looking at this right?

[Barry Wolk]

Yes.That’s correct.

[JohnC]

Hi, I located the radio surpressor in the Master Parts catalog (Group #18811, Part #4049733) but I don't see the one for the tank. Are they the same part? Is this something easliy found?

Thanks

[Knickoliss Iv]

Interesting. I had never seen a suppressor on the oil sender
on other cars I have or have worked on. I went out and looked at my car and it still has the suppressor on thankfully. On the same topic, is there a particular reason for a two terminal design on the temperature sender?

[Mark Norris]

Hi, I located the radio surpressor in the Master Parts catalog (Group #18811, Part #4049733) but I don't see the one for the tank. Are they the same part? Is this something easliy found?

Thanks

I managed to buy something very similar looking for the oil pressure gauge suppressor, they still have them on Ebay;

https://www.ebay.com/itm/401697159042?fits=Make%3AFord&hash=item5d87043782:g:1hIAAOSwPDlcUN6c

The one on the tank sender is a little different as its physically smaller and black in color (as I recall).

I don't of any reason why they would have two terminals on the temperature sender other than it was just convenient to manufacture them that way.

[Barry Wolk]

The ‘57 I’m working on has one.