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 1999 Mercury 75hp high pitch noise
#11012453
07/31/15 09:40 PM
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Joined: Apr 2015
Posts: 241
nitro1997
OP
Outdoorsman
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OP
Outdoorsman
Joined: Apr 2015
Posts: 241 |
Headed back to the ramp and about 50 yards into it, a very loud high pitched noise started. Sounds like it is coming from under the dash. Boat had been running fine all day, peeing fine, plenty of oil. Thinking that it is an engine alarm. As soon as you turn the key the noise starts. Where should I start?
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Re: 1999 Mercury 75hp high pitch noise
[Re: nitro1997]
#11012595
07/31/15 10:36 PM
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Joined: Oct 2005
Posts: 20,755
kingdad101
TFF Guru
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TFF Guru
Joined: Oct 2005
Posts: 20,755 |
oil tank sensor is a good try....
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Re: 1999 Mercury 75hp high pitch noise
[Re: nitro1997]
#11012613
07/31/15 10:45 PM
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Joined: Apr 2015
Posts: 241
nitro1997
OP
Outdoorsman
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OP
Outdoorsman
Joined: Apr 2015
Posts: 241 |
If it is an engine alarm, would the noise still start as soon as the key is turned without cranking the engine.
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Re: 1999 Mercury 75hp high pitch noise
[Re: nitro1997]
#11012625
07/31/15 10:51 PM
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Joined: Mar 2014
Posts: 4,649
Topwater2
TFF Team Angler
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TFF Team Angler
Joined: Mar 2014
Posts: 4,649 |
The oil tank float can get saturated and sink. I had one do it to me. Instead of pulling the tank, I pulled the wire and kept the tank full. Turn the key on, disconnect the wire from the tank and see if the alarm stops.
Last edited by FishKen; 07/31/15 10:52 PM.
FishKen
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