1997 550 sedan bridge, the last two times I started the engines the starter switches on the bridge would not shut off the engines. I had to use the emergency stop switches next to them to turn off the engines. I have tried a new rocker switch but the same thing happened. Any ideas what could be the issue? Thanks
Engines wont shut off
- Thread starter flaod
- Start date
Boat Guy
Well-Known Member
- May 15, 2013
- 2,289
- Boat Info
- 400 DA
- Engines
- CAT 3116s
What engines do you have?
I don't think I have emergency cut-off switches.
I don't think I have emergency cut-off switches.
Boat Guy
Well-Known Member
- May 15, 2013
- 2,289
- Boat Info
- 400 DA
- Engines
- CAT 3116s
Someone with more experience than me will likely chime in, but something to review is mechanical diesel runaway....
Here's a link to an example. I don't think this is your issue, but oil could be part of the problem and it doesn't hurt to have this knowledge for the future...
Here's a link to an example. I don't think this is your issue, but oil could be part of the problem and it doesn't hurt to have this knowledge for the future...
Skip Boyer
Active Member
- Sep 24, 2015
- 193
- Boat Info
- 1998 500DA Sundancer, 1999 Maxum 2800, 1998 270 Sundancer, Oliver Hazard Perry FFG-7
- Engines
- Twin Detroit 6V92TA
I am assuming you have 6V92s in your boat. 1997 vintage. These engines use an electrical solenoid that allows the engine to start and move in the opposite direction to shut the engine down. Im not sure how to post a pic here but they should be easy to find. They are on top of the engine, look like a small silver can,(if they have not been painted)they will have an arm protruding out of one end and some wiring coming out of the other end. Locate one of them and then have someone turn the rocker switch to run (not start). Note which way the arm moves. Then leave the rocker switch alone and move the shutdown knob to shut engine down and see if arm moves in opposite direction. Oh, and if your set up is like mine, the ignition breakers, key switches and rocker switch must all be in the run position to shut the engines down (same as they would be to start). If any of those three items are not powered then there is no power to activate the solenoid to move to the shutdown position.