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Another 96 GTX with a DESS issue

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bodine465

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Did search the forum and came up with several suggestions that I used to test, but looking for confirmation that I did things right and further suggestions.

OK, finally finished rebuilding the 800 engine for my project 96 GTX and got her dropped into place. Plugged in the lanyard to try cranking her over, but only got a long beep and a momentary block on the LCD screen. Without the lanyard attached, I get all the Info Center data after hitting the start button and using the Mode button for the 33 second count. Checked the diagnostics by unplugging the lanyard, hit the start button 5 times (short - long beep), then plugged on lanyard and hit start and got two short beeps. Per manual, MPEM cannot read digital code of the safety lanyard. Tried using eraser to clean contacts in lanyard and post, but no difference. Assuming that since it registered the lanyard during the diagnostic test that the connection to the post, and the post itself, was good, but broke out the ohm meter anyways and tested at post connection block.

Tested Black and Black/Yellow wires: open circuit. Test probe to the White/Gray wire and the other test probe to the switch terminal: 0 ohm. Test probe to the Black wire and the other test probe to the switch ring: 0 ohm. Safety lanyard on switch; connect the probes to switch Black and Black /Yellow wires: 0 ohm.

Since it passed these tests, should I assume that there is a problem with the lanyard? Can the dealer test the cap without having the ski? Since my local dealer doesn't work on "older" machines (WTF? It's a 96.), are the newer lanyards the same as my antique ski? Is there something else I should try or test first?



On a side note, I used my automotive solenoid jumper to try the starter and almost fried the wires to it. Used a screw driver to jump the solenoid posts and got it to slowly crank, but the tip of the screwdriver got red hot. The starter wire and battery wire didn't seem to get hot. Is this just because there was too much load going through the thin jumper wire and screwdriver tip, or a sign of a problem elsewhere? Starter seemed to bench test fine before installing and with the plugs out, so thinking it's just the extra load of having the compress new cylinders.
 
OK.... first... when you use a "Remote starter", you are supposed to hook it to the small wires of the solinoid... not the main power wires. They were made to power the solinoid... not to jump it. (that's why the wires melted)


Yes... since you have a brand new engine, it will be a little harder to crank. Once you fire it up, and it runs for 10 to 15 minutes... it will loosen up, and crank easier.


With that said, and with everything you are telling me...........


your problem is a weak battery.


On a SeaDoo, when the voltage drops below 10.5 ~ 11v... the MPEM will reset, and give you a single beep. Since your engine is very tight, when you push the starter button, the draw on the battery is high enough to drop the voltage below the threshold of the electronics.


The reason I come to that conclusion is because your post checks out with a meter, and your MPEM is reading your lanyard in diagnostic mode. (2 beeps after the lanyard install is "Everything normal") And, you already explained that the starter is pulling excessive power.

If I was working on it... I would make sure the battery is fully charged, and if needed... hook a jump box to it. (a second battery) but DO NOT JUMP THE SKI FROM A RUNNING VEHICLE !!!!!! if you do... you will burn up your MPEM. Just use a second battery for more capacity.


Finaly, your lanyard is exactly the same as the new ones. There is no reason why your local dealer won't work on it. (other than they don't want to) There are still plenty of parts available for a 96. But... I know there are dealers who don't like to work on an older ski/boat/bike because labor costs can well exceed the value of the vehicle in only a few hours. The local Kawi shop that I work with, just went though this. He took in a 1000 Kawi special to rebuild the carbs. (4 of them) The bike was a mid 70's turd, but with the labor, and the parts... the bill came out to be almost $900. Guess what... the bike is still in their shop, and the owner is trying to sue them. He is now thinking of the same thing.... not working on bikes if they are too old.

I'm not defending the dealer by you... just giving you some insight.
 
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Don't think it's a battery issue. Has a brand new AGM battery, fully charged. Not sure if or how a lanyard could become de-programmed, but the previous owner was a goober, so I imagine if there was a way, he did it.

I'll be giving the dealer a call today and see if he can take care of me. Thanks for the reply. Will post the results.
 
Talked to the dealer, who confirmed that the MPEM will lose the code if it's unpowered for too long. Since mine hasn't been licensed since 2007, it's been a while. He said that not only do they still do them on 96 machines, but they'll do it for free. Kudos to Tacoma Motorsports. Running it over tomorrow. Hopefully I can get it to fire and put a couple hours on it. High tomorrow is supposed to be a blistering 63 degrees.
 
It runs!!!!

IT RUNS!!!! :hurray:

Took it to the dealer, who tried to program the key, but it wouldn't take. Thinks one of the tabs inside may have broke. Bought a new lanyard, program took fine, then got her home and tried to start it. Had to crank it a few times with the full choke, then she fired right up. Idled at 2500 rpm for about 30 seconds, then shut it down. Next stop, the lake, for some break in time and riding.

Thanks again for all the help. Hopefully I won't have any more problems to ask about.
 
Thanks. Happened to get it out on the water for the second time today. Almost burnt up my 10 gallons of premixed break-in gas. Still a few tweaks that need to be done, but may not get another nice day before the season's over, so they might have to wait till next season. Still, it ran well. Very pleased.

Good luck with yours.
 
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