Issues with Trim Knob and Throttle

mjnathanson

New Member
Mar 2, 2016
2
Los Angeles, CA
Boat Info
1988 Sorrento
Engines
260 Mericruiser
If anyone can help or has guidance on these two mechanical issues, I would really appreciate. I have a 1988 Sea Ray Sorrento, 23 foot, 260 Mercruiser, 5.7 liter, Alpha. Here's my situation:

1. The trim knob on the throttle works only when I push the down position and the "trailer" button works. But when I flip the trim knob up, there is no reaction, no sound, like a dead battery. The mechanic said the trim motor and pump are working and he thinks the issue could be electrical. Would the proper part to replace be the trim switch? Or could thes symptoms be other issues that the electrician should troubleshoot?


2. Shifter/Throttle -- The shifter wouldn't lock in the upright position and is difficult to easily move back and forth-- it's has a feeling like there's sludge in there, but that's not the case of course. Years back, I replaced the cable that goes to the shifter/throttle but at that time, the shifter would lock in the upright position. Would a new cable fix the scenario -- where the throttle moves easily and locks in the upright position? Or, is there something else going with the shifter creating the problem?
 
I probably have the same throttle, and year as yours. Had the same problem on mine. 1st thing to do is to jump the solenoid at the pump to see if it will run pump up. I was able to pop cover off of trim switch and jump contacts at switch to test wiring and switch, it was not switch. Usually it is the limit switch on outdrive that has gone bad. They go bad a lot! I've replaced more than once on Merc outdrives.
 
I probably have the same throttle, and year as yours. Had the same problem on mine. 1st thing to do is to jump the solenoid at the pump to see if it will run pump up. I was able to pop cover off of trim switch and jump contacts at switch to test wiring and switch, it was not switch. Usually it is the limit switch on outdrive that has gone bad. They go bad a lot! I've replaced more than once on Merc outdrives.


Hey, I really appreciate this input. Thank you very much!
 

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