Power trim ?

[dpica15]

Bought a 2012 Mercury 90 four stroke last fall, took boat out to wash'n'wax it. Started the engine and when i trim it up or down, the engine's rpm's go down. Seems like it wants to stall. This is my first Merc, is this normal?

[Jerryv]

The electrical draw is probably putting a little more load on the engine through the alternator. I wouldn't think it would affect it much unless your battery connections were loose or dirty.

Hope you had muffs on it or you need a new water pump now.

Jerry

[dpica15]

Yup have muffs on for sure. Battery connections all clean and tight. Maybe bad trim motor, drawing too much current. I willl contact my dealer tomorow, still under warranty

[TomP.]

My Opti does the same at idle speed the trim just pulls some serious amps which kicks the altenator up which causes the RPM to lower.