May 10th, 2018, 11:05 PM | #1 |
‘94 Rider
Name: Colin
Location: Lewis Center, Ohio
Join Date: Nov 2010 Motorcycle(s): 1994 Kawasaki Ninja EX250F Posts: 83
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Trouble with oil pressure warning light/sensor
Hey guys,
Having a strange issue, and after 8 years of being here and at N250RC, I haven't ever seen it discussed. Seems to be a bad connection from the oil pressure sending unit (front of the engine near the exhaust headers), to the oil light on the dash. Here's the problem: When I turn the key to ON (engine off), the red oil pressure light on the dash does not light. If I take my finger and even slightly touch the rubber boot on the oil pressure sending unit, the light will then come on. However, it's extremely fussy and sensitive. Chances are, after a ride when I shut the engine off but leave the key on, the light does not come on after the engine stops turning. This is because it's so touchy, that the wind from the ride knocked the connection out of its sweet spot. Being anal about the smallest little things, it's driving me nuts knowing that if for some reason I lose oil pressure while riding, there's a good chance I wouldn't know because of this issue. Does anyone know the procedure for fixing this? I didn't see anything about it in the service manual or the supplement. I'm assuming I need to atleast replace the rubber boot, which is where the wire feeds in to. |
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May 10th, 2018, 11:21 PM | #2 | |
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Quote:
Bill
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Insanity: doing the same thing over and over again expecting different results each time. |
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May 11th, 2018, 06:24 AM | #3 |
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MOTY - 2018, MOTM - Nov '17
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Peel off rubber boot. You might luck out and find loose terminal not firmly attached to sensor.
OR... you may find frayed broken wire. Clean up that connection by trimming back some broken insulation. Wrap frayed strands back onto wire and terminal Solder joint That’s it for quick fix. Better solution is cut off end completely and crimp, solder, shrink-wrap new terminal. |
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May 11th, 2018, 02:32 PM | #4 |
‘94 Rider
Name: Colin
Location: Lewis Center, Ohio
Join Date: Nov 2010 Motorcycle(s): 1994 Kawasaki Ninja EX250F Posts: 83
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Thank you both. I took the boot off and it looks like the wire literally just sits on top of the sending unit, underneath the boot (when the boot is on the sending unit).
Is that wire supposed to be crimped around the unit? Because it most definitely was not, it was just kind sitting on top, easy to see how the connection gets broken all the time. I wish I had a picture, can probably take one later this evening if what I’m saying is making no sense. Thanks again! |
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May 11th, 2018, 02:48 PM | #5 |
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MOTY - 2018, MOTM - Nov '17
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I think the wire should be crimped to ring-terminal that's screwed into sensor. Photo would help show us what's wrong.
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May 11th, 2018, 05:31 PM | #6 | |
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Name: Bill
Location: Port Huron, Michigan
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May 11th, 2018, 11:14 PM | #7 | |
‘94 Rider
Name: Colin
Location: Lewis Center, Ohio
Join Date: Nov 2010 Motorcycle(s): 1994 Kawasaki Ninja EX250F Posts: 83
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Quote:
I was trying to take a picture of my situation, but it was dark when I got home to the Ninja (rained last night) and any pictures were't gonna turn out good. But basically my wire still has that ring or horseshoe-looking connector on the end, it just wasn't crimped to the sending unit. Was just kind of free to move around underneath the rubber boot. I will have owned my Ninja for 8 years in July, and I have never messed with the sending unit or sensor. So...that means the wire has been like that for an absolute minimum of 8 years, and it just now starts acting up. Pretty crazy! I'll give this a shot tomorrow, nice and simple, and all should be good to go. Thanks again guys. |
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May 13th, 2018, 09:25 AM | #8 |
ninjette.org certified postwhore
Name: AKA JacRyann
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MOTY - 2018, MOTM - Nov '17
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Look for screw, might have vibrated loose?
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