Oil pressure system
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Intermediate
Joined: Jun 2023
Posts: 40
Likes: 9
From: Michigan
Oil pressure system
Hey,
so the oil psi light on my 45 came on and wouldn’t go out.
so I checked the dash lamp ( good ) replaced oil psi switch with new ( good ) rebuilt oil pump ( good) BUT the light stays on!! WTF
Anyone have a solution?
so the oil psi light on my 45 came on and wouldn’t go out.
so I checked the dash lamp ( good ) replaced oil psi switch with new ( good ) rebuilt oil pump ( good) BUT the light stays on!! WTF
Anyone have a solution?
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,541
Likes: 6,413
From: Honah Lee
If it's just idle, it's the pressure relief valve. That maintains enough resistance so the pressure switch works.
Check your pressure switch by building a simple system from pipe to see what it's looking for to actual work.
Few Ts, short nipples,a pressure gage, volt ohm meter, fitting for air in.
Or try another switch. A non OEM generic may be set too high.
PS.. Welcome, hope you are enjoying your ride here. Only as a suggestion, make your next new post over in the new member welcome area to say hello.
Check your pressure switch by building a simple system from pipe to see what it's looking for to actual work.
Few Ts, short nipples,a pressure gage, volt ohm meter, fitting for air in.
Or try another switch. A non OEM generic may be set too high.
PS.. Welcome, hope you are enjoying your ride here. Only as a suggestion, make your next new post over in the new member welcome area to say hello.
Last edited by Jackie Paper; Oct 24, 2023 at 08:38 AM.
Seasoned HDF Member
Joined: Apr 2010
Posts: 9,562
Likes: 7,917
From: Long Island, New York
I have given up on oil pressure switches on my Flathead. Either they never come on or they never turn off. I have landed on the former. Easy enough to open the oil tank since it is right in front of you to see if you are getting flow, good luck.
Thread Starter
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Intermediate
Joined: Jun 2023
Posts: 40
Likes: 9
From: Michigan
Ok if anyone is interested this is I found to fix my
problem.
So after checking to make sure there is full flow of oil, checked psi switch , checked all connections from lamp to switch and wiring all was found to be good.
Than I checked all the electrical connections and all appeared to be good !!!until I hooked the battery back up and smoke started coming out of the dash and cooked a few wires.
After a few wtf and 2-3 cold beers, I found that post under the dash cover that holds many connecting wires came loose and was shorting to dash frame to motorcycle frame!
And Bam that was it!! installed new wire and off we go!
Just goes to show you that some of the biggest problems just need a small fix.
Thanks all for many great ideas in searching for a fix.
problem.
So after checking to make sure there is full flow of oil, checked psi switch , checked all connections from lamp to switch and wiring all was found to be good.
Than I checked all the electrical connections and all appeared to be good !!!until I hooked the battery back up and smoke started coming out of the dash and cooked a few wires.
After a few wtf and 2-3 cold beers, I found that post under the dash cover that holds many connecting wires came loose and was shorting to dash frame to motorcycle frame!
And Bam that was it!! installed new wire and off we go!
Just goes to show you that some of the biggest problems just need a small fix.
Thanks all for many great ideas in searching for a fix.
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