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Optimax - 4 Beeps every 2 mins problem, can't seem to solve

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Optimax - 4 Beeps every 2 mins problem, can't seem to solve

Old 04-09-2016, 05:09 PM
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Default Optimax - 4 Beeps every 2 mins problem, can't seem to solve

Hello,
I have a 2006 Optimax 225HP 3.0L DFI with about 300 hrs. It was sitting for about a year. I changed the water pump and leg oil before launching. Within an hour of use I started to get an intermittent alarm. It has now progressed to a 4 beep alarm every 2 minutes as soon as the engine goes above 1500 RPM.

I see this is usually diagnosed as a faulty oil tank sensor, problem is I have bridged the sensor connection and it has not resolved. I don't find any performance issues and the engine is peeing medium-cool water.

I have done the following:

1. Drained the fuel separator in the engine and removed about 1Tbsp water.
2. Drained the brand new external racor and found 1 Tbsp water
3. tested oil pressure by removing cap on internal tank at idle - overflow immediately.
4. Bridged the connection of the mounted oil tank sensor - no change

I'm stumped. Finding a mechanic with a code reader is difficult here.

Any ideas would be appreciated. Thanks
Old 04-09-2016, 05:13 PM
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4 beeps is the oil tank warning (level) in the engine mounted oil tank reservoir. The oil alarm will sound 4 short tones every two minutes if the oil tank mounted on the side of the motor has less than 22 oz of oil in it. If filling the reservoir makes the tones stop, you found the problem.

If you are sure you have more than 22 oz. of oil, or the alarm continues after filling the reservoir, unplug one of the two blue wires that are attached to the oil level sensor that is next to the filler cap. If the alarm stops, (you will need to turn the key off, then back on to reset the alarm) and doesn't recur after the reset, that sensor is bad and needs replacing.
Old 04-09-2016, 05:16 PM
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Originally Posted by LMorgan View Post
4 beeps is the oil tank warning (level) in the engine mounted oil tank reservoir
Yes, but my understanding is if a faulty oil tank sensor is the cause of the alarm it will be silenced by bridging the sensor's connection by wire, which I tried
Old 04-09-2016, 05:21 PM
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Water in the fuel. Could be the sensor if you're positive you got the vst really clean.
Old 04-09-2016, 05:23 PM
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What light is lit up on your gauge cluster? or do you have Smartcraft?






Old 04-09-2016, 05:25 PM
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appreciate the quick replies.
No lights, I just have a gauge with four or five symbols. None light up. I'm stumped because I think I did all the tests for both water in fuel and the low oil. Would draining any water in the separator not clear the alarm if it was a water alarm?
Old 04-09-2016, 05:37 PM
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I just read your first post again. It sat for a year. Drain tank, drain filter, drain VST. Put fresh gas in the tank.
Old 04-09-2016, 05:56 PM
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When you turn the key on , and system performs self test, do ALL of your trouble lights come on then go out after the startup beep?
Old 04-09-2016, 07:55 PM
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Originally Posted by Dacman View Post
When you turn the key on , and system performs self test, do ALL of your trouble lights come on then go out after the startup beep?
Just went and tested. No lights at all on startup. Just standard tone and then fire. I also drained the VST for a second time including removing the filter to get the last drop. No change, 4 beeps as soon as 1500 RPM
Old 04-09-2016, 11:31 PM
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Those optis are super sensitive to water in the system ..I would bet that's what it is .
Old 04-10-2016, 01:35 AM
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You say you bridged the low oil sensor, what about if the sensor is normally open, and when activated it closes? In that case you have just simulated the fault by closing (bridging) the sensor.
Old 04-10-2016, 01:54 AM
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this^^^.You need to disconnect, not bridge
Old 04-10-2016, 07:19 AM
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Originally Posted by satellite84 View Post
Just went and tested. No lights at all on startup. Just standard tone and then fire. I also drained the VST for a second time including removing the filter to get the last drop. No change, 4 beeps as soon as 1500 RPM
I think your trouble lights are bad is the reason your only getting a beep and no light. When you turn key on, don't start it right away , you should get a single beep followed by all lights coming on and then going out to verify that all lights are working. Takes a couple seconds to happen. I would replace that monitor gauge or tach if it's on one. The lights along with the audible beep make it easier to diagnose problems.
Old 04-10-2016, 08:25 AM
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From your post you tested your oil reservoir properly. You should have a closed circuit on the tank side of the wiring when the reservoir is full. What you are doing wrong is draining your VST and filter then, putting the same year old gas (that most likely has water in it) back in your filter. Get rid of the year old gas!




Old 04-15-2016, 12:29 PM
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Thanks for the suggestions. Just to provide followup, I took it into get the codes read, it was a voltage alarm. A blown fuse was discovered. It blew immediately on replacement. Then discovered the alternator was internally grounded. Alternator removed and fixed, replacement showed full power and no fuse issues. Beeping stopped.
Old 04-15-2016, 12:35 PM
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Good deal. I would suggest a system warning light check now. Test switches to see if you get warning lights per the chart. Sorry to keep on, But it would bug me if mine weren't working. And a service manual for your engine would help you in future. Happy boating.
Old 04-15-2016, 12:36 PM
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Thanks, will do. I am going to save my pennies for Smartcraft i think.
Old 04-15-2016, 04:15 PM
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Satellite, that opti isnt on a formula is it ?
Old 04-15-2016, 04:26 PM
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No, Whaler
Old 04-15-2016, 04:28 PM
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Ok, saw another opti recently with the same issue

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