and yet another problem

[dcsnowwake]

so i was out just riding on my boat (2005 switch I) 130 hours.
I was pulling someone, and when I backed off the throttle the eingine stopped. I tried to restart it, but I was unable to get any sound or anything out of the ignition. Now all the other electric worked, bilge, audio, lights, but not the ignition. So we sit around for about 10 minutes, playing with the battery switch and everything, well 10 minutes later, it started again, and didnt have a problem for the rest of the session.

Later that night, coming back from the restaurant, were about 1/4 mile from where we left, same problem, but I was at WOT, and the engine shut off, well this time I was pissed, and my passengers were scared of there lives, a storm came out of now where, lightning and evevrything, 4 ft waves, 50 mile an hour winds, it was bad. we all huddled underneat our boards to try to stay dry. BTW this is on the patuxent river in MD. so were all grabbing our life vests thinking the worst. Well another 10 minutes or so went by and it started again.

rode all day yesterday didnt have a problem. check the starter, its fine, what would cause this?

After that ordeal i am not a very happy camper. being caught out in the middle of the river on a open boat during a major storm is not cool. thankfully noone got hurt and the boat made it back. Im just very upset since this is my first boat and I have had many problems with her in 3 months.

thanks, and sorry for the long rant

[dogbert]

It might be your battery shorting out internally. You'll get unpredicatable results and, if the plates inside the battery are loose, it will kill the engine. I've had this happen on one of my trucks and when we went to jump it with a Ford F-350, it killed that engine too.

The odd thing is that all sorts of 12v accessories will still work.

[scottcarlye]

Do you have fly by wire throttle? and did the motor die or go to idle? My fly by wire system goes to idle and wont allow the motor to rev

[dogbert]

Originally posted by scottcarlye
Do you have fly by wire throttle? and did the motor die or go to idle? My fly by wire system goes to idle and wont allow the motor to rev

I didn't think they had fly-by-wire throttle in the 2005 models...that was a 2006 addition.

[dcsnowwake]

Originally posted by scottcarlye
Do you have fly by wire throttle? and did the motor die or go to idle? My fly by wire system goes to idle and wont allow the motor to rev

yeah no fly by wire. it has the GM VORTAC 315 in it

the engine cpoletely died. when you turn the ignition, it didnt even have the buzzing sound......then 10 minutes later, MAGIC! it works

[dogbert]

With a battery short, your battery will go from full cranking to completely dead (no clicks or anything).

[mtnsmith]

I had a similar problem with my SeaRay and it was the battery isolator, I am not sure if you have one of those but it would get hot and then cut off. Sitting for a few minutes would let it cool down and it would go again. The electronics would still work as well.

Those storms were nasty, I was sailing my parents 42' catamaran back from St Michaels to Annapolis on Saturday when we caught some of those gusts. We went from about 10mph to 15mph faster than is fun on a boat that big.

[empty_boat]

I had a silmiliar problem on and 2005. The negative battery cable was not tight on the engine. Tightening it took care of the problem. Also some other possibilities, try shifting the throttle lever while holding the key in the cranking position, sometimes the nuetral safety switch doesn't line up and if you shift it will and it will crank. Also if when it dies there are no guages when you turn on the key (look at the volt guage, it should come up when the key is turned on) then look at the main engine wiring plug, once in a while the male pins don't fit in the female ones and they don't make a connection. Usually they are clamped together with a hose clamp to hold it and sometimes loosening the clamp can make a connection.

Intermittent electrical is the hardest thing to trouble shoot.

The above info provided no charge by the master of the run on sentence.

[j2m2t2]

I know this is an old thread but was there a fix? I just had this happen on Sunday on my 20V. Exactly the same scenario, magic it starts after sitting.

[talltigeguy]

I had a similar problem with a loose wire to the coil. It would cut out for no reason. Then would randomly start later. Sometimes immediately, sometimes after a few minutes.

[deanwarwick]

we had the same problem in our GM Vortec, turned out to be the throttle control sensor, we were told not to go above 3000 rpm and if it did cut out, turn the power off from the electrical switch at teh back, this should reset the computer system and allow it to restart. usually when an electrical problem like that happens, the onboard computer stops the engine from starting to stop any more faults from happening, turning the switch off at the back simply resets the 'cut off' switch.

hope this helps

[j2m2t2]

Found the problem. Bad crimp at battery ground, main ground to motor. The cable pulled out without effort, must have been held in with the heatshrink. Thanks for the suggestions.