Merc 150 Saltwater need Help Please

[Rob33]

I purchased a 2001 trophy center console with a 2001 150 Mercury satltwater outboard about a year ago. For the most part, it runs great, but I would say every 5th or 6th time out fishing I'll be cruising at 25 to 30 mph and the engine basiclly dies. It doesn't shut down completely but I can only run just above idle. Funny thing is, next time I take it out, I run it at WOT with no problems. I'm pretty novice when it come to outboards, but I want to learn. Any ideas/suggestions on whats goin on. Right now it just seems like a crap shoot when I'm going out if it is going to run graet or give out on me. Almost sounds like a govener is kicking in when it happens, but I'm not pushing the rpm's that high. Any help would be great.

 

[MaggieRose]

Re: Merc 150 Saltwater need Help Please

The lube alert modules on these engines are designed to drop the RPM's way down when an alarm condition is sensed. The module executes a self test when you first turn the key. A good module will fire off four beeps on a small horn/buzzer located in your control console. Are you getting those four beeps before turning over the engine?

 

[Rob33]

Re: Merc 150 Saltwater need Help Please

Thanks for the help. I am not hearing any beeps when starting the engine. Now when your talking about a lube alert, are you talking about the lower unit gear lube or the oil injection or something totally different? I've noticed that when I warm the engine up for a good while I usually don't have the problem, but when I turn it on and get out on the water quickly I usually run into the problem.
Thanks again.