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Old July 29th, 2007, 10:12 PM
tightenup tightenup is offline
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Default 150 Mariner Engine Alarm

After all day fishing trip on the way back in, I got a constant beep, beep beep alarm on one of my two engines. Checked for obstructions on the primary water intakes and cleared a little vegetation. Thought we might have overheated. Got the motor home and it is still giving me the alarm. Other engine is fine. Any troubleshooting tips????
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Old July 29th, 2007, 10:18 PM
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bhile bhile is offline
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Default Re: 150 Mariner Engine Alarm

An intermittant beep is oil alarm. A steady beep is overheating alarm. I'm assuming this is oil injected.
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Old July 29th, 2007, 10:30 PM
tightenup tightenup is offline
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Default Re: 150 Mariner Engine Alarm

You are right....They are both '96 oil injected with remote tanks. I just topped off the tanks the night before. Do you think it may be a bad sensor or sending unit??? Is there an easy check for either? The other engine gives me a constant alarm when ever it feels like it. We usually just make bets for how long it take to quit. Sometimes I can shake the wiring harness behind the dash and it will quit. Not so with the oil alarm. Got the new used boat about 6 months ago and this is the firsttrouble I've had. New to the site, but I've read tons of threads
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