Trim gauge not working

[Newowner2011]

The trim gauge on my 1991 StarCraft with 4.3L Mercruiser with Alpha One Gen II outdrive does not work. I believe the trim works as I have fooled with it while cruising on the water and it seems to make a difference but maybe it's not working if the gauge isn't and it has been my imagination. The needle in the gauge is in the maximum up position. Could someone tell me their opinion of what might be wrong ? Is it the gauge or the trim switch?

 

[djmakko]

Re: Trim gauge not working

I have the same problem, mine goes up all the way and stays there, but the trim and switch works, im courious of the answer to that...

 

[camalot]

Re: Trim gauge not working

Standing at the back of the boat looking at the drive, there are two trim sender units mounted to the gimble ring pivots . The left one is your limit switch and the right one goes to the gauge, this would be the first place to look. With the ignition on loosen the two retaining screws on the right sender and rotate and see if the gauge moves, if not it's time to replace the senders.

 

[djmakko]

Re: Trim gauge not working

what about if the senders are new?

 

[Newowner2011]

Re: Trim gauge not working

You wouldn't happen to have a picture of that, would you ?

 

[Bt Doctur]

Re: Trim gauge not working

then there wired wrong, or not lined up properly during installation.

 

[Bt Doctur]

Re: Trim gauge not working

 

[achris]

Re: Trim gauge not working

what about if the senders are new?

Are the wires from the CORRECT sender plugged into the correct connectors on the harness at the back of the engine?
Does the gauge have power to it? (Measure both positive AND the negative terminals at the gauge).

 

[djmakko]

Re: Trim gauge not working

the gauge have power neg and pos, but perhaps you are right , i have to check the connections , i know for a fact I've installed as the pic above and connect it the way it was but never cross check the connections its a spider web back there and access is very limited .