11 replies to this topic

[BadboyR6]

Hey guys, i went into my mpem box just to make sure nothing was blown, and long behold the darn blue 15 was toasted i replaced it and it blew again. So I unplugged the stator gray connector, and it didn't blow but as soon as I plugged it back in, toasted. What could be my problem? Btw the boat does crank and start. We took it out the other day and it was acting eratic. It was running, we got it on plane, but the rpms were jumping around. Up and down.

1997 787 challenger

thanks

[Kevin Leclair]

Sounds like a wiring/electrical problem, have you run any tests to verify this?

[BadboyR6]

I didnt run any test yet, but i did try with the fuse. I disconnected the battery and pulled the gray plug, i placed a new fuse into the 15amp spot and connected the battery. It didnt pop, I tried turning the boat on, it turns over but doesnt fire. So i put the gray plug into the cover and the 15amp popped. I tried to crank the boat and it started without a problem. So i dont know what to test or what to do next

[Kevin Leclair]

I know this isn't directly related to your issue, but hopefully it will give you some pointers of what to try next. Still seems like an electrical issue to me, possibly a ground problem.

http://www.ehow.com/...wing-fuses.html

[BadboyR6]

hmmm, this problem is a little strange, I know I grounded down the engine properly. i guess im going to have to look for anything electrical, i dont think my mpem is blown, just because the boat does start and run. Thanks for that link kevin, i'll start looking into it. Maybe i'll have to also check the stator with my ohm meter, see if its reading what it should.

[Kevin Leclair]

Sounds good, please keep us posted on what you find.

[BadboyR6]

quick question, where would the rectifier be on the boat? someone on the other forum told me to find the locate the rectifier, and disconnect the "red" wire. If stops blowing, replace rectifier, if it does pop, unplug yellow wires, if so, then its your stator assy grounding out. Need to remove the mag cover and take a peek.

[Kevin Leclair]

Do you have a wiring diagram for your boat? I am not positive but it seems like it would be listed on there.

[Kevin Leclair]

I checked this manual and it talks about the rectifier in there, http://seadoosportbo...er-shop-manual/. Might be worth downloading to help you troubleshoot this a bit further.

[BadboyR6]

ok, so i decided to take off the 3 wires, one at a time, and nothing blew. So i put them all back togerther and the fuse blew. So I undid all the motor mounts and turned the motor on her side, took off the cover and this is what i found with a heavy smell of electrical burn. what do you guys suggest? could this cause my problem?

[seadoofanatic]

To me it still sounds like too much "juice" coming through the wires. Have you checked the wires with some type of voltage meter, seems like too much voltage would also cause the burning?

[BadboyR6]

I got a replacement Stator from a buddy of mine. Do you think it will burn that one out? I got this motor from some dude that I did a trade and I never looked at the stator before I installed the motor. So I'm not sure what condition it was in.

To me it still sounds like too much "juice" coming through the wires. Have you checked the wires with some type of voltage meter, seems like too much voltage would also cause the burning?