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#12463427 - 10/12/17 04:06 PM 2009 Mercury 150 EFI Problem-Need suggestion for Mechanic Near Longview
buggsboy Offline
Angler

Registered: 07/22/11
Posts: 261
Loc: Carthage, Tx/Lake Fork
Here's the deal, after cruising down the lake for about 20 minutes I came down off pad and idled around a minute or two. When starting back up on pad, a loud, steady alarm sounded. I immediately backed off the throttle and the alarm stopped as I sat there idling for a few seconds. I very slowly returned to the ramp with no additional alarms.

Does anyone know what a steady alarm from this particular motor indicates (I'm thinking either oil delivery problem or over heating)?
Also, can anyone recommend a really good Mercury mechanic near Longview? The one I usually use is on vacation for several weeks. Thanks
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PB. 10 lb 12 oz

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#12464014 - 10/13/17 07:54 AM Re: 2009 Mercury 150 EFI Problem-Need suggestion for Mechanic Near Longview [Re: buggsboy]
Muzzlebrake Offline
Extreme Angler

Registered: 12/26/14
Posts: 1577
Loc: Euless
Sounds like over heat. Probably time for a new water pump. That's exactly how mine acted. New pump fixed it. While I was at it I replaced both t-stats as the original stats were somewhat corroded. Both are easy DIY items. 2003 EFI 150


Edited by Muzzlebrake (10/13/17 07:57 AM)
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From Genesis: "And God promised men that good and obedient wives would be found in all corners of the earth."

Then He made the earth round...and He laughed and laughed and laughed!


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#12465490 - 10/14/17 11:46 AM Re: 2009 Mercury 150 EFI Problem-Need suggestion for Mechanic Near Longview [Re: buggsboy]
buggsboy Offline
Angler

Registered: 07/22/11
Posts: 261
Loc: Carthage, Tx/Lake Fork
Thanks for the suggestion on the thermostats. I'll probably replace them and the temp sensor, too.
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PB. 10 lb 12 oz

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