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Author Topic: Non-Functional Motosens Oil Pressure Gauge  (Read 676 times)
Foozle
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Posts: 368


Lexington, KY, USA


« on: June 14, 2015, 04:14:18 PM »

Folks:  I've got a 3-4 year old Motosens oil pressure gauge that's stopped working and, despite my best efforts to diagnose the problem, remains functionally kaput (yes, I do in fact have oil pressure!). Now, I've never experienced an actual gauge going bad, but since I assume this could happen - is there any easy way to trace the issue to either the oil pressure sensor or the gauge itself?  In advance, thanks much!  Terry (VRCC #22179)
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John Schmidt
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Posts: 15224


a/k/a Stuffy. '99 I/S Valk Roadsmith Trike

De Pere, WI (Green Bay)


« Reply #1 on: June 14, 2015, 06:31:57 PM »

Something to consider.....the Autometer C2 gauges and others made by them often won't register if there is low voltage. That's per Autometer techs.  Some time back I changed out my oil pressure gauge due to it not working, turned out the new one was erratic so I called. Low voltage at start up due to an old battery using all its juice for starting caused the problem. Recently my oil and temp gauges started to do it again so I figured I'd put the charger on it over night and see how it worked. Same problem....so took off down the street and with high rpm I cut the ignition and turned it back on. Bingo...I had gauges. So, thinking my battery was only about 3 yrs. old I checked the maint. record and whoops....it was just past 5 yrs. old last month. So, out with the old, in with the new, and I have active gauges every time.
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Foozle
Member
*****
Posts: 368


Lexington, KY, USA


« Reply #2 on: June 15, 2015, 01:55:21 PM »

Something to consider.....the Autometer C2 gauges and others made by them often won't register if there is low voltage. That's per Autometer techs.  Some time back I changed out my oil pressure gauge due to it not working, turned out the new one was erratic so I called. Low voltage at start up due to an old battery using all its juice for starting caused the problem. Recently my oil and temp gauges started to do it again so I figured I'd put the charger on it over night and see how it worked. Same problem....so took off down the street and with high rpm I cut the ignition and turned it back on. Bingo...I had gauges. So, thinking my battery was only about 3 yrs. old I checked the maint. record and whoops....it was just past 5 yrs. old last month. So, out with the old, in with the new, and I have active gauges every time.
Thank you, John.  I hadn't considered an aging battery.  Like your's, mine is old enough that I can't remember exactly when I last replaced it.  Perhaps it's time.  Terry
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Firefighter
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Posts: 1165


Harlingen, Texas


« Reply #3 on: June 15, 2015, 05:22:10 PM »

I have three Motosen gauges on my 2000 IS. One time I started having trouble with my temperature gauge fluctuating more so at idle and go crazy when the cooling fan was on. Turned out to be a bad ground on the frame to the battery. I ended up running an extra wire from the battery negative to the frame and everything was fixed.

If yours does not work at all I would check to see if you have 12 volts to your gauge ( 12 volts to the positive wire and that the gauge ground wire is grounding). I think if that is good with power turned on you can ground the sender wire and the gauge should peg out, which would mean your gauge is good. If all is good then your sender is bad or sender wire is bad. Let us know, Firefighter
« Last Edit: June 15, 2015, 05:50:55 PM by firefighter » Logged

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