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#12150326 - 03/20/17 09:53 PM Uncommanded motor trim recently.
Texjef84 Offline
Outdoorsman

Registered: 12/21/13
Posts: 236
Loc: Colleyville, Tx
It's happened 3 times in the last few months, always on the trailer. Runs full up or down, eventually stops then returns to normal. Trim switches at the bow, throttle handle, blinker and on the motor. Not sure where to start troubleshooting
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#12150383 - 03/20/17 10:38 PM Re: Uncommanded motor trim recently. [Re: Texjef84]
Fisherdad58 Offline
Angler

Registered: 10/28/16
Posts: 327
Loc: Ellis County, Texas
Mine did that once in the rain. I guess it dried out because it hasn't done it since. Had to be the one on the bow. If you have a switch to cut power to all accessories and it still does it I would bet on the throttle handle switch. Otherwise I would start with the one on the bow. It's probably more exposed to the elements than the rest.
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#12150516 - 03/21/17 06:41 AM Re: Uncommanded motor trim recently. [Re: Texjef84]
Bob Landry Online   content
Extreme Angler

Registered: 08/10/11
Posts: 2662
Loc: Austin, Tx
The switch on the bow is simply connected parallel with the one on the throttle and has power to the center pin all the time, same as the throttle.
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#12150525 - 03/21/17 06:49 AM Re: Uncommanded motor trim recently. [Re: Texjef84]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 11219
Loc: Littlefield Tx & Lake A. H. US...
The control handle trim on some brands are known for this. Like Bob said.
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#12150636 - 03/21/17 08:01 AM Re: Uncommanded motor trim recently. [Re: Texjef84]
Bob Landry Online   content
Extreme Angler

Registered: 08/10/11
Posts: 2662
Loc: Austin, Tx
The trim solenoid is only powered by the 12V from the trim switch. Nothing else affects it. Switches are cheap, I would just replace both of them. If it's dirty or flakey contacts in the switch causing it to happen intermittently, you can waste a lot of time monking with it.
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2018 Robalo R180 CC, Yamaha 115

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#12152436 - 03/22/17 06:33 AM Re: Uncommanded motor trim recently. [Re: Texjef84]
Texjef84 Offline
Outdoorsman

Registered: 12/21/13
Posts: 236
Loc: Colleyville, Tx
Thanks to all who replied. Bob, just so I'm clear, which two would you replace? Bow and throttle?
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#12152446 - 03/22/17 06:50 AM Re: Uncommanded motor trim recently. [Re: Texjef84]
Bob Landry Online   content
Extreme Angler

Registered: 08/10/11
Posts: 2662
Loc: Austin, Tx
I would replace both of them. They're cheap. Also, check the cable under the console for exposed wiring just to make sure you don't have a bare wire touching something. it will be a small blue/red/green ribbon cable.
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2015 Seaark 1872 MV CC Etec-90
Two Helix 12 CHIRP SI's, , MinnKota Riptide ST80/i-pilot Link, Bob's Hydraulic
2018 Robalo R180 CC, Yamaha 115

Bitter Gun Owner
Bitter Clinger
Armed Infidel

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#12153900 - 03/22/17 09:25 PM Re: Uncommanded motor trim recently. [Re: Texjef84]
Texjef84 Offline
Outdoorsman

Registered: 12/21/13
Posts: 236
Loc: Colleyville, Tx
Thank you again, I'll report back
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#12338885 - 07/14/17 07:14 AM Re: Uncommanded motor trim recently. [Re: Texjef84]
Texjef84 Offline
Outdoorsman

Registered: 12/21/13
Posts: 236
Loc: Colleyville, Tx
By process of elimination I found the trim switch on the side of the motor to be faulty.
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#12338936 - 07/14/17 07:48 AM Re: Uncommanded motor trim recently. [Re: Texjef84]
Bass N Beer Offline
Pro Angler

Registered: 09/18/11
Posts: 702
Loc: Springtown, Texas
Every boat that I have owned has done it at one point in time. It was always the bow switch that was the culprit.

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#12339034 - 07/14/17 08:58 AM Re: Uncommanded motor trim recently. [Re: Texjef84]
Curtbass Offline
Extreme Angler

Registered: 04/17/15
Posts: 1164
Loc: Grand Prairie, Tx
Thats why I installed a battery cutoff. When it's off, nothing recieves power, preventing anything from operating "on its own", especially while driving down the road. Talons don't draw power, etc, etc..
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