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09-27-2021, 11:22 AM | #1 |
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Oil Pressure Sender
I have been through three reproduction 50# oil pressure senders on my '41. One failed, the next one showed 15# with the engine off; a second replacement worked okay for a while, now shows 20# with the engine off. Where can I find an original type oil pressure sender. I would even use and 80# unit, knowing that the calibration is way off, but will show a true zero pressure.
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09-27-2021, 12:46 PM | #2 |
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Re: Oil Pressure Sender
Didn't I see that the older Jeep 50 pounders are 6 volt?
Probably the same manufacturer as you have already tried, but thought I'd share what little knowledge I have.
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09-27-2021, 04:03 PM | #3 |
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Re: Oil Pressure Sender
Current Jeep senders are 24 volt. I will dig deeper.
Are the Jeep units same type mechanism as King Seely that designed for Ford? |
09-27-2021, 06:26 PM | #4 |
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Re: Oil Pressure Sender
A Standard Motor Products PS60 has been on my 59AB in the pickup for 12 years. Verified it with a mechanical gauge.
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09-27-2021, 06:32 PM | #5 |
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Re: Oil Pressure Sender
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09-27-2021, 08:17 PM | #6 |
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Re: Oil Pressure Sender
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09-27-2021, 08:53 PM | #7 |
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Re: Oil Pressure Sender
Drolston: It is my understanding that the oil presssure gauge is a voltmeter, the negative (or positive on 12 volt systems) being connected to the ignition side of the ignition switch, not the battery side as I suspect yours is connected. The sender furnishes ground. If you ground the terminal on the sender, the gauge should read full scale with the ignition switch on.
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09-27-2021, 10:28 PM | #8 |
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Re: Oil Pressure Sender
A reminder : Ford used the King-Seely method of gauge activation and does not operate on simple changes in voltage.
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09-28-2021, 11:31 AM | #9 | |
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Re: Oil Pressure Sender
Quote:
The reproduction senders do not have points. They control the power consumed by varying the electrical resistance through movement of the diaphragm. The inaccuracy of such senders suggests that it is difficult to get the calibration correct. I am hoping that the PS60 sender is better than the ones sold by many early Ford parts vendors. |
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10-04-2021, 02:18 PM | #10 | |
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Re: Oil Pressure Sender
Quote:
So, if you are okay with an oil gauge that simply tells you whether oil pressure is above 20 psi, or not, the PS-60 is the ticket. Actually that functionality is better than the sender I have that indicated 20 psi with the engine off, so the PS-60 will stay in there until I find a fully functional sender. |
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10-19-2021, 08:20 PM | #11 |
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Re: Oil Pressure Sender
Received a NOS 50# oil pressure sender from All Ford Parts. Not cheap, but unlike the modern reproductions, it actually works correctly. When I turn the ignition on but don't start the engine, the needle stays at the left stop. With the engine fired up it goes to about 48 lb indication. Drops to about 45 at idle when warmed up. Perfect!
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10-19-2021, 10:01 PM | #12 |
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Re: Oil Pressure Sender
there are also senders for a gauge and idiot light. maybe the PS60 is for a light, not gauge sender
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10-22-2021, 02:05 PM | #13 |
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Re: Oil Pressure Sender
drolston
I would say the one you got is defective.
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10-22-2021, 02:08 PM | #14 |
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Re: Oil Pressure Sender
Having installed a few of the replacements, take care to ensure that the orifice of the sending unit matches that which you are replacing; I’ve had to bore out a couple.
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