Oil Pressure Switch
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Road Master
Joined: Jul 2020
Posts: 768
Likes: 169
From: USA
Oil Pressure Switch
My red oil light had been coming on every once in awhile riding my 01 road king. Today, I found my oil pressure switch was very loose.
I tightened it back up. Was that likely causing that light? Does that switch do anything mechanically or just sense when the light should come on?
Thanks guys.
I tightened it back up. Was that likely causing that light? Does that switch do anything mechanically or just sense when the light should come on?
Thanks guys.
Seasoned HDF Member
Joined: Mar 2021
Posts: 17,929
Likes: 3,564
From: backwoods
I have 2001 FLHR too. I believe it just brings the light on. I think it fails open. So loose like you saw will cause light to come one. Not positive. But easy enough to check. Unplug and see if light is on, plug back in.
I installed an arlen ness press gauge that goes from there to rocker cover. Bothered me at first toughing my thighg, but that was 18 years ago, and have not thought about it sense.
I have heard some say you don;t need a gauge just listen to bike, but I like it. Also like it for warming it up and taking easy until warm.
I installed an arlen ness press gauge that goes from there to rocker cover. Bothered me at first toughing my thighg, but that was 18 years ago, and have not thought about it sense.
I have heard some say you don;t need a gauge just listen to bike, but I like it. Also like it for warming it up and taking easy until warm.
Grand HDF Member
Joined: Jun 2017
Posts: 4,623
Likes: 3,941
From: Near Yosemite
Bulldog, when you say loose, are you talking about the sensor itself where it threads into the case? Or where the wire attaches to the sensor switch? It's just an "Idiot Light" type switch that is either on, or off, but either one of the issues above will give the wrong signal to the light at the wrong time. Try starting the bike and with the oil light off, (showing pressure), wiggle the wire at the switch and see if the light flickers. If so, you found the issue sir!
Road Master
Joined: May 2019
Posts: 953
Likes: 954
From: Daytona Beach
I have 2001 FLHR too. I believe it just brings the light on. I think it fails open. So loose like you saw will cause light to come one. Not positive. But easy enough to check. Unplug and see if light is on, plug back in.
I installed an arlen ness press gauge that goes from there to rocker cover. Bothered me at first toughing my thighg, but that was 18 years ago, and have not thought about it sense.
I have heard some say you don;t need a gauge just listen to bike, but I like it. Also like it for warming it up and taking easy until warm.
I installed an arlen ness press gauge that goes from there to rocker cover. Bothered me at first toughing my thighg, but that was 18 years ago, and have not thought about it sense.
I have heard some say you don;t need a gauge just listen to bike, but I like it. Also like it for warming it up and taking easy until warm.
I just ran a shorter oil line to the pressure switch since the standard line was too long. Still have my gauge and no burning my leg.
Road Master
Joined: May 2019
Posts: 953
Likes: 954
From: Daytona Beach
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Grand HDF Member
Joined: Jun 2017
Posts: 4,623
Likes: 3,941
From: Near Yosemite
Sooooo.......... I have to add this note:
After a few years, maybe 4?, I noticed that the glycerin or silicone fluid in the gauge had started to seep out and get blown all over, making it a little tough to pinpoint where it was coming from. Started to make a mess out of the engine and stuff. Narrowed it down to the gauge and contacted Arlen Ness to see if they had a rebuild kit for it that I could install myself, or did I need to send it in for repair, or did I just need to buy a whole new one? I was pleasantly surprised when I got a reply back asking me for my home address so the guy could send me a whole new gauge to replace the leaky one for free!! AWESOME customer service! Especially nowadays when everyone is just out for a quick buck. (Read the thread about J&S Jacks!!!) Anyhow, swapped them out and all is good!
After a few years, maybe 4?, I noticed that the glycerin or silicone fluid in the gauge had started to seep out and get blown all over, making it a little tough to pinpoint where it was coming from. Started to make a mess out of the engine and stuff. Narrowed it down to the gauge and contacted Arlen Ness to see if they had a rebuild kit for it that I could install myself, or did I need to send it in for repair, or did I just need to buy a whole new one? I was pleasantly surprised when I got a reply back asking me for my home address so the guy could send me a whole new gauge to replace the leaky one for free!! AWESOME customer service! Especially nowadays when everyone is just out for a quick buck. (Read the thread about J&S Jacks!!!) Anyhow, swapped them out and all is good!
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Grand HDF Member
Joined: Jun 2017
Posts: 4,623
Likes: 3,941
From: Near Yosemite
It's kinda easy to see if it leaked........ if it leaked, there's noooo silicone fluid in the gauge. If you see the bubble, you're good to go. If you look closely at the pick I posted earlier, there is no bubble, hence the email to AN.