I thought it was right based on having to stand on your head to actually work on things. Hmmm
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Is this a rectifier issue?
- Thread starter quadchris8390
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I thought it was right based on having to stand on your head to actually work on things. Hmmm
quadchris8390
New Member
Ok, I think I have this just about figured out thanks to you guys. I took some voltage readings on power comin in to connector 1 and used the ground off of the same connector. I was getting some crazy numbers jumping up and down from 0-12v. So I proceeded to get some numbers once I got it stabilized off of the rectifier. Yesterday I was getting 4v and today I am getting a good 12v. I believe my pin at connector 26 is loose based on that. Now that I got it somewhat stabilized at 12v, what do you know. It starts!!! So long story short and through everyone's great input, it seems to be a loose pin on the connector. I don't know how to repay you guys for all the feedback and help. I will definitely pay it forward.
Chris
Chris
Most of us take Visa and Master Card, McDonalds gift certificates, Starbucks,,,,
Congrats.
I know it took a bit to het there, but we did get there.
A couple if guys here really stepped up pulling and posting schematics and for that I thank them,,,,
Congrats.
I know it took a bit to het there, but we did get there.
A couple if guys here really stepped up pulling and posting schematics and for that I thank them,,,,
Sportster-2001-951C-Stock
Well-Known Member
Nice, I knew you could find it! 
And, don't even try to return any favors except for coming back and documenting your future trials and tribulations so everyone can learn something! It's payment enough knowing you've learned a great deal about your skis and some day when out on the lake if the thing happens to cough, your knowledge gets it going again in a jiffy.
For some of us, this is also about keeping the old machines up and running and out of the land fill.
Thanks!
And, don't even try to return any favors except for coming back and documenting your future trials and tribulations so everyone can learn something! It's payment enough knowing you've learned a great deal about your skis and some day when out on the lake if the thing happens to cough, your knowledge gets it going again in a jiffy.
For some of us, this is also about keeping the old machines up and running and out of the land fill.
Thanks!
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Sportster-2001-951C-Stock
Well-Known Member
Oh, and there's a special pin extractor tool used to back those pins out of the connector housing so you can resolder or crimps new ones on, I'm going to see if I can find the manufacturer's info on that now, so let me place you on hold:
Some music for you while waiting: Sometimes those pins aren't fully pushed into the connector housing they're inside of......
Sportster-2001-951C-Stock
Well-Known Member
A photo from the service manual of an AMP plug connector assembly as used on an MPEM (attachment attempt):
(These are made by a company called Amphenol)
But wait, there's more..... It slices, it dices it makes mounds of Julian and for just three easy payments....... (kidding!)
Looks like you can disassemble this connector if necessary, using standard hand tools.
(These are made by a company called Amphenol)
But wait, there's more..... It slices, it dices it makes mounds of Julian and for just three easy payments....... (kidding!)
Looks like you can disassemble this connector if necessary, using standard hand tools.
Attachments
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quadchris8390
New Member
Awesome. I will try to get my hands on one. Thanks.
Sportster-2001-951C-Stock
Well-Known Member
Wait, this one may not require a special tool(I don't think it does), looks like it just disassembles but you may not even have to do that if it's one of the flat spade type of terminals like they use for power connections you might be able to tighten it(assuming it's lose) by using a small flat blade screwdriver from the open connection side while it's unplugged from the MPEM.
So I'm reading from the service manual about how to remove and reinsert the individual conductors.
Right, you don't need a special tool to insert/remove the terminals from these AMPphenol connectors.
The other connectors used throughout the harness (waterproof "Weatherpack" connectors) do need a pin extractor, I have this one on Ebay, like this:
http://www.ebay.com/itm/370504592169?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
Equivalent to: Delphi/Packard 12014012
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Awesome post. I have been following it since I have the same issue on a 97 GTX I am working on but didn't want to highjack the thread. Glad you found the problem with yours quadchris! I think with mine I do have a rectifier issue. It all started like this one. First I noticed the NEW battery wouldn't stay charged. Then the batt light came on when riding, ski cut off and was then completely dead. Our local wonderful guys at the SeaDoo shop said it was a bad MPEM. But wanted to be sure for myself. Got the ski back and noticed they just put the MPEM in the front compartment for me. (will be speaking to the manager next week) So I followed the schematic and installed it back in double and triple checking it. Hooked battery up and the 5amp blows instantly. I cant find it but remember reading somewhere on the forum that if you unplug the rectifier and it does not blow its a bad rectifier. If it still blows its the diode in the MPEM. Right? Mine does not blow when the rectifier is unplugged.
Sportster-2001-951C-Stock
Well-Known Member
On the MPEM, which fuse is blowing, MPEM 5A or BATT 15A? If MPEM 5A I don't think unplugging the rectifier should make any difference, the MPEM 5A fuse will still blow if the MPEM has the infamous shorted surge protector diode in it is bad There's a pretty good sticky on the forum about MPEM troubleshooting, it has the info on the diode I think.
If the stator or rectifier are bad, the BATT 15A fuse will blow.
So based on what you said, it sounds like a bad MPEM, but it doesn't make sense that unpluging the rectifier stops the fuse from blowing, so please double check your work and confirm?
Well like I said it was just throw in the front comp from the Seadoo store here and the 1 fuse was missing. the 15a was in there and the other one closest to the center of the mpem I figured the 5a was supposed to go there. I may have misspoke about the rectifier. I unplugged the connector at the engine front cover and the fuse did not blow. but from what I read on the schematic the wires just go to the rectifier anyway.
Sportster-2001-951C-Stock
Well-Known Member
Yeah, you have to make sure the correct size fuses are installed in the correct positions, otherwise more damage can be the result.
So, look carefully on the MPEM, maybe in the fuse holder cap, there should be labeling to tell which size fuse goes into each socket, also this is shown on the schematic posted earlier in this thread, thanks to strizzo.
So, get your stuff together and straingtened out as much as you can then start a new thread and I'm sure you'll get whatever help you need. There's even a member on here who can most likely repair your MPEM and test it for you, so now you know you're in the right place.
Good luck
So, look carefully on the MPEM, maybe in the fuse holder cap, there should be labeling to tell which size fuse goes into each socket, also this is shown on the schematic posted earlier in this thread, thanks to strizzo.
So, get your stuff together and straingtened out as much as you can then start a new thread and I'm sure you'll get whatever help you need. There's even a member on here who can most likely repair your MPEM and test it for you, so now you know you're in the right place.
Good luck
quadchris8390
New Member
I know I probably need to start a new post on this one but thought I would ask you guys real quick. The Jetski that was having problems started up fine this morning. I have a hose hooked to it. When I hit the throttle, it revved up but then I was getting a different revving from somewhere else in the engine. It would not stop till I killed the engine. I know it sounds wired but it was like it a different tone than the engine itself. Any ideas?
Sportster-2001-951C-Stock
Well-Known Member
My first thought is you noticed something was vibrating. Another possibility, when was the last time the jet pump bearing oil was checked for water contamination? Maybe it needs an oil change?
quadchris8390
New Member
[video=youtube;P8ZxXjJzxxE]http://www.youtube.com/watch?v=P8ZxXjJzxxE[/video]
Here is the issue I am having. I am not reving it. It is making a high rev after it is started. You can hear it if you listen closely. Something doesn't sound right.
Here is the issue I am having. I am not reving it. It is making a high rev after it is started. You can hear it if you listen closely. Something doesn't sound right.
quadchris8390
New Member
Yes. When I hit the throttle it revs but the noise seems to be at a different pitch than the revving of the engine. Listen closely on the video and you can hear the pitch change. Sorry that is the only way I know how to explain it.
That soud sounds familiar. Check and replace the oil in your pump, then pull your pump off. You will probably find the splines where the shaft goes into the pump dry and rusty. Clean as best you can, then squirt some marine grease down into the impeller splines and coat the shaft splines with grease, reinstall pump. Then remove the cover from the PTO and hit that grease fitting with a few pumps of marine grease, not too much just enough to cause the rubber bellows to swell just a little. My 97GTI had a horrible chattering sound when running on the trailer, the grease trick silenced the noise.
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