225 wvinrude will not shut off keeps running

[Greg_E]

Re: 225 wvinrude will not shut off keeps running

I'm glad you got it running, but I don't understand what your saying.
The two B/Y wires in the shift interrupt switch cannot just plug into each other. There would be nothing to power the circuit.
Look at the wiring diagram. The B/Y from the stbd side of the pack connects to the plug that hangs outide the the power pack and terminal cover near cylinder #1. There is usually a wire clip that holds the two halves of the connector together. That wire goes directly to the switch. When the switch is actuated the B/Y wire is shorted to ground killing the stbd three cylinders. Notice that the diode is located after that connection point and then goes to the stbd plug that goes under the terminal strip cover and continues on through the engine harness to the ignition switch. The diode blocks current flow in that direction which prevents the shift interrupt switch from killing the port side cylinders.
Because current is allowed to flow through the diode in the direction of the arrow both sides of the pack are grounded when the ignition switch is turned off (Switch off: B/Y shorted to Gnd through the M terminals on the switch).
The shift switch can only kill the stbd side.
Cathode (-) |< Anode (+) Current flow can only go + to -

BTW It appears that a couple of the power pack wires have been pinched under the power pack which is very easy to do. When you put it together you have to be very careful not to crush any of the wires when you tighten everything down.

 

[rusty bolts]

Re: 225 wvinrude will not shut off keeps running

Yes you are right, I just bypassed the shift interrupter so it will run and shut off but when I go to shift it will be running on all 6 {not good} does it matter witch b/y wire from the shift interrupter harness goes to the st side b/y pack wire , I think it does? because of the diode ,I may have put the wrong boots on them in my confused state. So one black /y wire goes to b/y wire that goes to the m terminal on the red plug harness? the other to b/y power pack stb side . I did notice that someone labeled with a red pice of tape a b/y wire coming out of the old shift interrupter switch harness ,what a mess I need to go boating, thanks

 

[Greg_E]

Re: 225 wvinrude will not shut off keeps running

If both of the connectors on the B/Y wires are the same you will need to use your Ohm meter to determine which leg has the diode.
Pop the switch out of the clip so you can actuate it by hand. Disconnect the two B/Y wires. Connect the meter leads to the Black wire and one of the B/Y wires and actuate the switch. Now reverse the meter leads and repeat the test on those same two wires. If the diode is in the circuit it will read 0 Ohms in one direction and high Ohms when the meter leads are reversed. That connector goes under the terminal strip cover and connects into the engine harness. Its purpose is to block the path to ground for the port side Power pack B/Y wire when the shift interrupt is actuated.
If the wire reads 0 Ohms in both directions with the switch actuated, the diode is not in the circuit. That one would connect to the stbd side power pack B/Y wire. When the switch is actuated the stbd B/Y wire is connected directly to ground through the closed shift interrupt switch.
When you get the wires sorted out start it on the muffs and press the shift interrupt switch to make sure the everything is working as it should.

 

[Joe Reeves]

Re: 225 wvinrude will not shut off keeps running

Yes you are right, I just bypassed the shift interrupter so it will run and shut off but when I go to shift it will be running on all 6

The shift interrupter switch has very little, if anything, to do with shifting into gear. It's purpose is to momentarily interrupt the starboard bank's ignition so that one can get the engine out of gear. If the interrupter switch is non existent, on some rigs with a certain propeller, the pressure against the propeller blades creates such a condition with the clutch dog/gear lobes that it is impossible to shift out of gear or from one gear to the other even at a dead idle UNLESS the engine is shut down..... interesting scenario when coming up to a dock.

 

[Greg_E]

Re: 225 wvinrude will not shut off keeps running

The shift interrupter switch has very little, if anything, to do with shifting into gear. It's purpose is to momentarily interrupt the starboard bank's ignition so that one can get the engine out of gear. If the interrupter switch is non existent, on some rigs with a certain propeller, the pressure against the propeller blades creates such a condition with the clutch dog/gear lobes that it is impossible to shift out of gear or from one gear to the other even at a dead idle UNLESS the engine is shut down..... interesting scenario when coming up to a dock.

Good to know. I was unaware that there is a possibility you can't shift out of gear without the shift interrupt in the circuit.

 

[rusty bolts]

Re: 225 wvinrude will not shut off keeps running

? does it matter which b/y wire from the harness goes to the interrupter switch harness, or the port and starboard power pack b/y . Is there any specific b/y wire from the harness {there are two] that go the port or stb /and the other to s.i harness? or it should not matter, I just do not want to kill the pack. the boot on the s/I/h that reeds zero ohms with the switch pressed in goes to the harness not to stb b/y power pack?

 

[rusty bolts]

Re: 225 wvinrude will not shut off keeps running

I have located the diode and test I it checks out .Does the b/y wire with the diode in line {the other b/y joins the wire after the diode } witch one is hooked up to the starboard side of the pack ? the b/y wire with the diode or the b/y wire that johns the after the diode? of does it matter ?

 

[Greg_E]

Re: 225 wvinrude will not shut off keeps running

Look at the picture you posted. the B/Y wire on the port side of the pack (rubber plug missing) goes into the rubber socket that has the B/Y wire covering the decal for terminals 1 & 2. That B/Y wire in that socket should go to the ignition switch M terminal. Check it.

The other socket that fits under the terminal strip cover should be common to that and also connects to the ignition switch M terminal. It is the one just above 3 & 4. That connects to the plug on the interrupt switch which is just to the right of 6 in the picture ,which should be the one with the diode.

The B/Y wire on the switch that has the socket, shown on the far right, will connect to the plug (missing)on the B/Y stbd power pack.

The black wire on the switch goes to the stud.

That's how it should be. You need to verify that all those wires are what I think they are.

I know how frustrating these engines can be to fix. I learned a lot of my lessons the hard way with nobody to help.

 

[rusty bolts]

Re: 225 wvinrude will not shut off keeps running

Up date . shift interrupter switch works as tested while motor is running .hit the button motors slowed down so that is good , motor starts up and runs good but will not shut off on either controls . Could the power pack just be bad I will ground out the 2 b/y wires when it running {shocking? }and see .Or maybe the pin in the red plug is not making contact

 

[rusty bolts]

Re: 225 wvinrude will not shut off keeps running

At wits end no spark when b/y pack wires grounded that's good, pack ground wires good . still will not shut off an suggestions thanks have continuity to red plug on b/y wires from harness under plug It must be a ground or both key switchs are shot? will check them out

 

[Joe Reeves]

Re: 225 wvinrude will not shut off keeps running

So far.... the engine stops running when you ground out the black/yellow wire at the powerpack. Normal happening, pack is good.

Disconnect the black/yellow wire at the ignition switch, then test the continuity of that black yellow wire back to the black/yellow wire at the engine that would normally connect to the powerpack. It sounds like this is the problem area (wire break).

 

[Greg_E]

Re: 225 wvinrude will not shut off keeps running

Reread Joe's post #15 and the last part of my post #18. If you had done that it would probably be running by now. The only thing that would keep the engine from shutting off is no path to ground for the two B/Y wires coming from the powerpack.
Three things can cause that.
Open B/Y wire between the ignition switch M terminal and the power pack
Open Black wire from the other Ignition switch M terminal to ground
No continuity from M to M when the ignition switch is turned off.

A couple simple continuity checks should get this resolved.