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Thread: Low Oil Alarm - 2.5 EFI
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09-19-2021, 10:28 AM #1Member
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Low Oil Alarm - 2.5 EFI
I have a low oil alarm but the engine mounted tank is full. If I disconnect the wires to the sensor shouldn't the alarm stop? It doesn't for me.
t i a
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09-19-2021, 11:11 AM #2
steady beep or beep, beep ,beep?
Dave1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
1988 BAJA Sunsport 186, 96 225 Pro Max
79 12' Auminum, 95 Merc 9.9
RIP Stu
"So many idiots, so few bullets"
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09-19-2021, 01:52 PM #3Member
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4 beeps every two minutes. The tank on the engine is full. I took the sensor out and disconnected the wires from the engine. I figured that would stop the alarm but it didn't. Then I jumped the two wires on the engine, still got the alarm. Took the sensor and hooked it to an ohm meter and ran a magnet up and down the sensor. Got continuity until the magnet reached the top so the sensor seems to be fine.
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09-19-2021, 02:26 PM #41980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
1988 BAJA Sunsport 186, 96 225 Pro Max
79 12' Auminum, 95 Merc 9.9
RIP Stu
"So many idiots, so few bullets"
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09-19-2021, 03:27 PM #5
Seems to me the tank on the motor had to be full full... like up into the filler neck full???
(Never really looked at the motor tank until I had an alarm I couldn't figure out.)
Also, the alarms don't go on or off right away... you could see the fault on the DDT for about 2 minutes before the alarm would start beeping (so you don't get a lot of false alarms in rough water or whatever; according to the engineers at Merc). You would have to (probably) wait after jumpering or disconnecting the wires?Last edited by David - WI; 09-19-2021 at 03:36 PM.
Let's just go ahead and make America great again!
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09-19-2021, 03:31 PM #6Member
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The tank is full full. I've had it go low before a few times and have had to purge and fill he tank so I am confident it up to the proper level. Thanks
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09-19-2021, 03:33 PM #7Member
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My pump is not mechanical but rather electronic. However I do intend to check oil flow out of the pump. Thanks
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