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Uptrim question

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dmoccia7

Member
My uptrim is erratic on my alpha one sterndrive. When I push on the uptrim button on my remote controls it sometimes works fine but other times it requires a lot of tries. I hate to think that the switch itself needs to be replaced. I know there are a lot of things that I can check but I would like to initially look at the most likely failure. Looking for recommendations on most likely cause. Boat is Bayliner 2005.
 
How electro mechanical are you?
Do you have a 12 volt test light?
Do you know where the trim pump is?
Do you understand what the components on the trim pump are and how they function?
 
kghost said:
How electro mechanical are you?
Do you have a 12 volt test light?
Do you know where the trim pump is?
Do you understand what the components on the trim pump are and how they function?
Click to expand...
I consider myself electro mechanical and I have test meters. I know where the trim pump is I just hope I don't have to go there since its a pain in the ____ to get to. Lousy access (my boat is a Bayliner 185 walk-thru hull). I would say I understand about 98%.
 
On the trim pump there are two solenoids.
Top one (Trim up) with large blue wire and small blue with white stripe.

Bottom solenoid is the same but colors are green.

If you test the small blue wire as connected to the up solenoid with meter, someone can flip trim switch on control, and you see if meter shows voltage.

Note, dump the volt meter for most simple electrical tests for a 12vdc boat and get a test light!!! A light shows bright to dim based on current. Bright means good power to test point.

A volt meter will amost always show 12volts regardless of amperage as long as there is some.

If you see the switch activating the solenoid but the solenoid is not working then the sokenoid is most likely bad.

Note: the trim up swith only works based on trim limit switch sstting and when the drive is at that point, the trailer button will finish raising drive.

As BT Doc said, when trim swith malfunctions, have you tried the trailer button to see if that works?
If it does and the drive is down and trim up dosesnt work but trailer button does then it could be the trim switch.

If niether trim switch/button do the same intermitten problem, most likely its a trim solenoid.
 
Bt Doctor and kg host have both help me in the past and they are absolutely correct, but for my 20 yr old 2004 boat, Suggest you replace both 20 yr old solenoids with OEM and then retest. I want to save money like the next guy but this is cheap insurance for a 20 year old part, do it once, and your not caught at the ramp or have a bunch of people onboard. IMO. I also take a few turkey baster fluid slugs out each year but that me. Good luck
 
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