Major mystery problem on 98 GSX Limited

[T Fred]

Here is what it's doing or not doing. OK, it will turn over and crank up sometimes! If the kill switch is on the post, and you go to crank it with the start button, it may turn over and crank right up or it may not turn over. If it doesn't, you can take the kill or key (I call it the Key) off and put it back on and try again. I may have to do this once or maybe 100 times. Once it turns over and you leave the key on, it will ussually crank, unless it sits there with it on for more than say 5 or 10 minutes. The sea doo dealer in my area can not figure the problem out either. He has checked the post, the key, the start/stop button, and the computer. He said he spent hours ohming out the wires, and still can't figure this out. Once you get really frustrated and tired of taking the key on and off and trying it, and you just let it sit for 15 or 20 minutes, you may go and put the key on and it will crank right up. You may not think this is a big problem, but it is absolutely the most frustrating thing I have ever seen. I have another ski just like this one that is not running do to a bad engine, and the dealer switched out several parts from this ski to the good one and it is still doing the same thing. I can take a screw driver and turn it over across the solenoid and all it will do is turn over and not fire. I let it sit and forget about it for a while, and go back to it and it may or maynot crank right up. This has got to be some kind of bad wire or computer issue. The dealer said he swithced the computers and that both computers are good. CAN ANYONE HELP ME?

 

[kustomkarl]

I would start by cleaning the Post on the safety lanyard. It is beeping and saying it isn't connecting to the Mpem, (Multi Purpose Electronic Module) It needs to beep 2 times to let you know it is ready to start. Clean the post and cap with soapy water. Don't use any grease of lubricant on it as it needs a clean connection to make contact. Connect the lanyard to see if it is making a connection. 2 beeps and it's ready to fire up.
Engine start/stop switch verification;
Disconnect the Yellow/Red wire of the start/stop switch. Using an ohmmeter, connect test probes to the Yellow/Red wire and to ground. Measure resistance, it must be an open circuit (switch is normally open). Depress and hold switch, the ohmmeter should read close to “0” ohm.

Safety Lanyard Switch Verification;
If 2 short beeps are not heard when installing the safety lanyard, disconnect the switch wires.

Safety lanyard removed;
connect the test probes to switch Black and Black/Yellow wires. It’s an open circuit, there should be no continuity.
Connect one test probe to the White/Gray wire and the other test probe to the switch terminal. Measure resistance, it should be “0” ohm. Connect one test probe to the Black wire and the other test probe to the switch ring. Measure resistance, it must be close to “0” ohm.
Safety lanyard on switch; connect the probes to switch Black and Black /Yellow wires. Measure resistance, it must be “0” ohm.

Timer Verification;
The timer is integrated into the MPEM. Always confirm that the fuses are in good condition. To confirm operation of timer, remove the safety lanyard from switch. After 5 seconds delay, depress start/stop button once. The timer should stay on for 33 seconds (for example, the gauge(s) will be activated) and than turn off.

Here is all the information to diagnoise the electrical problem related to what your telling me. Keep us posted to you out come, or if you need more help.

Karl

 

[shaunmic]

my '05 gtx does the same thing but only if the key gets wet, you have to fully dry and reattach several times to get it to crank