Shift Interupt 5.7L Alpha

airdvr1227

Lieutenant Commander
Joined
Jul 15, 2009
Messages
1,666
My starboard engine keeps dieing around the docks as I shift from F to R. I think it might have something to do with the interupter? How do I check?
 

airdvr1227

Lieutenant Commander
Joined
Jul 15, 2009
Messages
1,666
5.7L Alpha shift interrupt issues?

My starboard motor has developed a nasty habit of dieing unexpectedly as I maneuver in close around the dock. Always raises the pucker factor. I think the idle is a touch low at ~500-600. Seems to happen when I'm shifting from F to R and back. How is this supposed to work? How do I troubleshoot?
 

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,362
If the wheel on the switch dosent center itself, the lower shift cable is bad. the interrupter is doing its job interrupting the ign to shifty out of gear.killing the motor is a sign that the cable or shift mechanism needs work/replacement
 

GA_Boater

Honorary Moderator Emeritus
Joined
May 24, 2011
Messages
49,038
Hey airdvr - Merged both topics. The other one seemed to have a little more info, plus Bt replied to this one.
 

Rick Stephens

Admiral
Joined
Aug 13, 2013
Messages
6,118
+1 on Bt answer. You can probably count on most likely replacing the lower shift cable or at minimum doing an adjustment of the linkage. Lower shift cable is pretty easy. And new ones come precut so adjustment of that cable is a snap to check. I'd recommend OEM merc on that. They are making a superb upgraded cable and housing.

Good luck.

Rick
 
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