Oil psi light

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Sep 28, 2024 | 02:17 PM

Denovo

Thread Starter

Intermediate

Joined: Jun 2023

Posts: 40

Likes: 9

From: Michigan

Oil psi light

Hey All,
Does anyone have a fix for why the oil
psi light comes on and than not?Oil pressure switch is good ( I’m pretty sure on that) and oil
is cycling in the tank, but the light comes on and then I’ll check the wiring for shorts but I don’t see any reason why it happening!
So if this has happened to you and you found out why please let me know.
Thanks.

Sep 29, 2024 | 02:13 PM

johnjzjz

Seasoned HDF Member

Joined: Nov 2006

Posts: 12,878

Likes: 5,449

From: la la land jerzey

Picture up the oil pressure switch and i will tell. If its the one you can mode to get it not to happen

no year - no idea what you have

Sep 29, 2024 | 11:52 PM

kculp

Cruiser

Joined: Jul 2016

Posts: 151

Likes: 25

From: Swisher, Iowa

Quote:

Originally Posted by Denovo

Yes, would run fine for 15 miles and light comes on. This was a 08 Softail with 25k miles. I'd stop, wait a few minutes and could go 5 miles and came back on. We changed the oil pressure sensor, nada same thing. So mine was only discovered on takedown. The oil dipstick came undone and trapped in the reservoir tank. Sounds silly, because my dipstick was fine. We think it came from the factory and never caused a problem until positioned where it occluded flow. I replaced pump anyway, cams, and bearings as the chest was opened at that point. No damage, running fine 1 yr later.

Edit, sorry just now seeing flathead...

Last edited by kculp; Sep 29, 2024 at 11:53 PM.

Sep 30, 2024 | 07:15 AM

Architect

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Joined: Apr 2010

Posts: 9,562

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From: Long Island, New York

Quote:

Originally Posted by Denovo

I have never had any luck with the oil pressure switch and light. I have tried original units and repop, either the light never comes on or the light never turns off. On would make me mental, I currently have mine wired to a repop unit that never turns the light on, oh well.

Oct 1, 2024 | 12:45 PM

Denovo

Thread Starter

Intermediate

Joined: Jun 2023

Posts: 40

Likes: 9

From: Michigan

This is the current oil psi switch that “might “ be the issue. Does anyone know of a trouble free switch or how to cure this problem?

Oct 1, 2024 | 04:15 PM

johnjzjz

Seasoned HDF Member

Joined: Nov 2006

Posts: 12,878

Likes: 5,449

From: la la land jerzey

Remove the switch and remove the nut part from the body of the switch - caution - a small spring is inside - remove it - the tension of the spring is incorrect

when it’s removed the switch is free to ground and not a loaded spring keeping it from the ground - when it grounds the light goes off and no pressure it turns on

Oct 1, 2024 | 04:45 PM

Denovo

Thread Starter

Intermediate

Joined: Jun 2023

Posts: 40

Likes: 9

From: Michigan

It’s a completer unit, can’t be taken apart, so can’t remove spring or anything to it.

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Oct 2, 2024 | 07:44 AM

Architect

Seasoned HDF Member

Joined: Apr 2010

Posts: 9,562

Likes: 7,917

From: Long Island, New York

Quote:

Originally Posted by johnjzjz

John, you are saying just remove the spring completely and run the sending unit like that?

Interesting idea, does it work with repop or original only??