Won't start 2004 Seadoo GTI LE

[akossow]

I have a 2004 Seadoo GTI LE. When I was putting the battery in the wave runner I shorted between the terminals. Now it won't start. I have checked all the fuses and the spark and they are okay. It also looks like is is getting gas because the spark plugs seem wet. Any ideas on why it won't start?

 

[96GeeTeeEye717]

what happens when you try to start? clicking? anything? or is there no sound at all? do your gauges come on? give us a little more info.

 

[Michael211_2000]

What terminals are you referring to (where the cables attach to the battery or what?) and what'd you short them with? I can't figure how you shorted the battery or what was involved in the short.

You're getting fuel to the cylinders it sounds like (so the fuel pump is working), you must not be getting spark then or else it should at least try to start. While I don't know enough about what shorted or where or why, you *may* have fried the engine's computer (MPEM... Multi-Purpose Electronic Module) in which case it'll have to be replaced. Ebay is a good source for used SeaDoo MPEM modules from parted out PWC's.

Please provide as many details about the short that occurred as you can remember.

- Michael

 

[akossow]

The motor will turn over but won't start. The gauges work and when I put on the landyard I get four quick beeps.

 

[akossow]

I was tightening down the screws on the battery terminals when I shorted across them with a wrench. The positive lead post melted a little. There was burn marks on my wrench. When I hook up the landyard I get four quick beeps. The gauges seem to work. It turns over with not problems but just doesn't start. I have pulled the plugs and them seemed to be wet. I don't know if that is oil or gas. Will need to check that out.

 

[Michael211_2000]

Ooops! Ok... I'm not sure what that would have done to the rest of the electrical system, maybe a power spike resulted?

I just went and checked my 06 RXT, and when you plug the key in it emitts 2 short beeps (indicating it's ready to start), a few seconds of pause, then 4 short beeps (indicating hey you I'm not started yet why'd you leave the DSS key plugged in dummy?). It then pauses for a few seconds and repeats the 4 short beeps. Ergo, your 4 short beeps are normal it's just letting you know you've left the key plugged in.

Seriously though, my gut tells me that the short must have sent an electrical spike thru the system and fried your MPEM unit. Without that, your engine will crank over but will not send fire to the plugs. You probably will have to take it to a dealer and let them run diagnostics on it to verify what the problem is. You'll have to spend some money on this I'm afraid. :-(

- Michael

 

[96GeeTeeEye717]

dont take it to a dealer at all. Or at least just yet. have you pulled the mpem and checked the fuses yet? Do you know how to use a multi meter? if not google it you'll need one as a pwc owner. It will save you tons of time and money. Check those fuses if havent yet. Look for the 5A expecially. Also read this thread http://www.seadooforum.com/showthread.php?30440-2004-gti-le-rfi-mpem-problem. Also good idea to run a continuety test on your stator and your cut off relay. I would tent to ultimatley lean to the problem being in the mpem like michael. So get a meter and test that first. keep us posted and good luck.

 

[akossow]

Seadoo won't start

Michael,

Thanks for your help.

What terminals are you referring to (where the cables attach to the battery or what?) and what'd you short them with? I can't figure how you shorted the battery or what was involved in the short.

You're getting fuel to the cylinders it sounds like (so the fuel pump is working), you must not be getting spark then or else it should at least try to start. While I don't know enough about what shorted or where or why, you *may* have fried the engine's computer (MPEM... Multi-Purpose Electronic Module) in which case it'll have to be replaced. Ebay is a good source for used SeaDoo MPEM modules from parted out PWC's.

Please provide as many details about the short that occurred as you can remember.

- Michael

 

[akossow]

I have tested all the fuses I could find and they all tested good with an ohm meter. I didn't pull the cover off of the MPEM, do you think there is a fuse behind the MPEM cover?

 

[egentile]

Hey guys I also have a 2004 Seadoo GTI LE and having an a MPEM or DESS issue. I was blowing the 5amp fuse on the MPEM and bought a new one from Seadoo. Installed it today and when the dealer tried to reprogram the DESS we could not get the DESS to chirp at all. So the service guy said something else was wrong other than the MPEM. So I checked the fuse back by the Solenoid and it was good. I also checked the 20 amp power line fuse and that was good. I ohm tested the lines and it appears that there isnt power going to the MPEM. But when I put the DESS on the post I can hear a small click back by the solenoid.

Does anyone have an idea what I can do next?

 

[Michael211_2000]

There's a point at which about all you can do is start swapping out components 1 at a time until something changes. I'd say you need to try another DESS post now. You make an educated best guess, replace that part, and see what happens.

I've not heard any click by my solenoid when plugging the key onto mine's DESS post.

ps. Retain your swapped out parts, just in case they weren't the problem... once you KNOW for sure what's bad, the extra parts can be put up somewhere for spares or sold on Ebay as used but working parts.

- Michael