96 Seadoo Challenger No Beeps, No crank???

[b_dolla44]

OK,
So to start his off I just picked up the 96 challenger 787... I was told it was parked two years ago because it didn't get up onto plane easy enough and they got a new boat...(thinking it was impeller/wear ring related I picked it (VERY CHEAP:hurray

So, I get it home today and hook the battery up after charging a few hours...I hear a funny humming sound coming from the DESS post area... I remove the bucket and find the Noise coming from the fuse rea... ( once you kick the bilge on the umming stops. And it only does it the first time the battery i hooked up)????
At this point I decide to hit the start/ stop buttom .....nothing happens.... No clicks, no anything....
PS I did have 2 short beeps from the DESS when I fisrt started....
So I start checking fuses...
The only fuse I find blown in both fuse blocks was a blower fuse....
the Engine will crank over with the plugs removed while jumping the relay in the MPEM...
Any help????

Thanks in advance!
PS. 'm a well know member over at ************** but the greenhulk doesnt have much of a 2 stoke SeaDoo section....:blush:

 

[Dr Honda]

Seadoo MPEM's are very sensitive to over voltage. If you were trying to start it with the charger hooked up.... then you could have cooked the MPEM.

BUT... I would start by pulling all the plugs apart... and cleaning the conections.

 

[b_dolla44]

Seadoo MPEM's are very sensitive to over voltage. If you were trying to start it with the charger hooked up.... then you could have cooked the MPEM.

BUT... I would start by pulling all the plugs apart... and cleaning the conections.

Okay this morning before i left for work i plged the key in... I DID get the 2 beeps!!!!:willy_nilly:
Yet, it still did not turn over...Nor did it click or make any noises....
So, I pulled the battary and took it to work with me....The battary was not fully charged and it wouldn't take a full charge either...
After charging it and testing it came back a bad battary...
I will replace it tonight...Any other ideas as to why i don't even hear the solinoid click???

 

[Dr Honda]

Until you put a good battery in it... there is nothing you can do. (So i'm not going to guess at it) It may work just fine once a new battery is put in.

 

[Gamerse]

OK,
the Engine will crank over with the plugs removed while jumping the relay in the MPEM...
Any help????

Will it turn over without the plugs removed, and is there a spark when it does turn over?

:cheers:
Ernest

p.s. I hear ya about the hulksters, they are about the latest n greatest, namely 4techs. It is why I'm here.

 

[b_dolla44]

GOOD NEWS!!!!!
I put a new battery in today after work...
Plugged in the DESS Key...2 short beeps!:thumbsup:
Hit the starter buttom...NOTHING!!:banghead:
tested solenoid by jumping it...engine tried to fire....then acted like it was loaded with fuel...(hard cranking)
So, i pulled the plugs....Spun the engine over and watched the geyser of fuel and fogging oil come out
Did this 5-6 more time until it fired up and ran for 45 seconds or so...:cheers:
So, the plus side is that it DOES run....
The down side is I'm still kinda stumped on the solenoid issue....
Here is what I've found thus far...
When I remove the yellow/green/red wire I have a full 12.6 volts....(probing the blk wire that goes into the MPEM for the ground)
When using a test light it lights up the test light.....
BUT when checking resistance I get some reading in the 0.6ohms range????? and I don't know if this is correct or not....Logic tells me that its a ground and should not have that much resistance...But, when I look at the mpem I'm baffled because I can't trace the black wire....
Anyone able to tell me what kinda of resistance they have in theirs?????

 

[Gamerse]

FSM wiring diagram says the black wire goes to ground. It should have less than 2 ohms. 0.6 ohms is a good connection to whatever you are testing to. I.E. the black wire to ground. (anything under 2 ohms will conduct electricity well) If the black wire checks fine to ground, and you have 12+VDC on the yellow/green/red wire, then you have a bad solenoid. You can always try jumping a couple wires to the relay input to test it. All it needs is power and ground.

:cheers:
Ernest

p.s. you could always steal the engine and pump from your avatar and run 70 mph all day long.

 

[b_dolla44]

Put a new solenoid in it today and it fired right up off of the start/stop button!

 

[Dr Honda]

I was reading through the posts, and was just getting ready to tell you to replace the solenoid... but you beat me to it.

Glad you got it running.