Tilt Trim Gremlin

Reg312

Petty Officer 2nd Class
Joined
Jul 12, 2009
Messages
139
1991 20' Lowe pontoon with same year Johnson 40 hp. Last fall I charged all the batteries and throughout the winter I'd walk by the and hit the trim up / dwn switch on the motor to check charge. This spring I was getting ready to start it with muffs on and the Battery was DEAD. I charged it and started fine. I continued to check the tilt trim until at motor until this weekend when I finally got it in the water and all worked fine.

Boat worked great this weekend. But when I was locking the boat down all of a sudden the motor started trimming down, with NO ONE in the boat and stayed trimming down. I hit the trim up switch on the shift lever and motor trimmed up, but as soon as I let go of the thumb switch it started trimming down and would not stop. I went to the motor to work that switch and I got it to trim up. So now we are sticking in trim up and when I switch the thumb switch trim down on the shift lever the trim motor just stops waiting for instructions. I let the trim down button go and it starts trimming up and won't stop. So I disconnected the Battery till next weekend.

Obviously I realize I'm going to have to go thru some wiring. But could it just be at one of the switches? Would some spray contact cleaner do the trick? Anyone else encounter something like this and what did you find out was wrong? Any places to check out BEFORE I tear into the wiring? Thanks
 

sw33ttooth

Chief Petty Officer
Joined
Apr 24, 2011
Messages
498
Re: Tilt Trim Gremlin

sounds like what ever your trim down button was connected to bounced off and hit a differnt terminal first off there should be a little black box[not joking]. follow the wires[not shifter/thottle cables] to the motor it should be about half way between trim motor and controller. inside this box should be like 10-12 wires and 2 relays [btw relays are around $10-15]. if that is not it then its with in your control unit something with the switch and i have no expierence ripping those apart not sure how its wired
 

Reg312

Petty Officer 2nd Class
Joined
Jul 12, 2009
Messages
139
Re: Tilt Trim Gremlin

After I posted I searched "Tilt Trim Problems" and it seems That many have similar as problems I do. seems Evinrude/Johnson almost leads the way. So I'm going to clean switches first, check connections and then head to the relays. And I do have the manual so hope that keeps me out of to much trouble.
 

Reg312

Petty Officer 2nd Class
Joined
Jul 12, 2009
Messages
139
Re: Tilt Trim Gremlin

I was checking into the 2 relays. Are the 2 tilt trim relays the same? Left my manual at the lake. From what I see they are the same and they just plug in. Am I seeing this right?
 

Reg312

Petty Officer 2nd Class
Joined
Jul 12, 2009
Messages
139
Re: Tilt Trim Gremlin

Again - Great knowledge and help from the iboats members. Thank you.
 
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