View Full Version : MCX won't turn off
07-09-2007, 01:15 AM
My 2005 Maristar 210 VRS will not turn off. I turn the key to off and pull out key, the guages go dead but motor still is running. I pull the safety lanyard, and will not stop. I had to pull the wires going into the coil (two plugs going into it, and not high voltage) to stop the engine. I had to disconnect the + from batttery to make sure nothing was on.
07-09-2007, 01:19 AM
Your probably going to want to take this one in to the dealer......it will be a bit of a trick to diagnose without being there, but maybe JimN will come along w/ some insight.
I have an opening I could squeeze you into on Thursday if you want to bring the boat to Chicago:D
07-19-2007, 05:27 PM
Looks to be ignition relay.
Does the boat have dual batteries?
07-20-2007, 02:27 PM
The boat is trying to tell you something... It aint quitin time!!
07-23-2007, 12:32 PM
Yes the boat has dual batteries and the ground strap is nice and tight between the two batteries. The mechanic said there was a bunch of bad relays in 2005 on these boats. The kill switch was also replaced, I guess it wasn't cutting out the boat when pulled.
You have voltage on the ignition circuit after the switch. I would look at the accessory wires that are connected to the batteries and at the solenoid or alternator. With the battery off, measure voltage on the exc post of the alternator- it has a thin purple wire attached to it. If you have voltage, you may have a bad bridge rectifier.
Eric- where's Will- too busy?
07-23-2007, 12:45 PM
I just got the boat back from the dealer, and the relay and kill switch were replaced, everything acts normal. I guess if the problem comes back, the alternator will be the next thing looked at.
07-23-2007, 03:42 PM
Which relay- the ignition circuit? If that shorts, it could cause this but I haven't seen many fail this way.
07-23-2007, 04:00 PM
They told me there are three relays by the ECM on the MCX, under the carbon fiber looking plate. A starter, fuel pump, and ignition relay there. He said it was the middle one. The contacts seized togethere, keeping the relay working.
It would have to be the ignition relay, then. The others wouldn't keep it running. That's a new one for me- I have never seen a relay fuse together if it wasn't seeing too much current.
07-23-2007, 04:34 PM
The mechanic was saying something about a bad batch of relays in 2005.
What's your take on that???