DESS Long Beep Under Power

[Scott0321]

We have an 08 Speedster 200 with twin 215's. This afternoon on the lake we were cruising around fine no issues.

Later in the day we were in a no wake zone puttering around for 10-15 minutes looking at some huge homes going up. Clean water , no weeds Anyway go to give it some power and a long continuous beep as soon as the RPMs went up. Shut that enigne down. Not sure what was going on fired it back up and at low idle fine...as soon as you got into the throttle....long beep. Eventually shut it down completely for about ten minutes and used just one to limp back. Fired the other one up and then the CHK engine light pops on then the temp light starts to blink. Any ideas....no seaweed , no restrictions that I can tell

Is it possible it would overheat just cruising like that for 10-15 minutes. I'm home now but figure I need to go to the dealer to figure out what may have happened. Any easy diagnostics to tell what is going on. Coolant and oil level appear to be normal.

 

[seadoosnipe]

Heat...

When you were idling, you may have heated up the cooling system, with no rush of water passing across the ride plate. When you idled up, the increase in engine speed set off the alarm. Whats not known is if it were the EGTS or your engine temp.

You should not shut off a hot engine unless there is no alternative, like a busted hose. When you shut off the motor, you shut down all circulation to the motor. The motor will increase in heat before it cools off in that situation. Your best bet was to hold that throttle setting you had until the engine managment system made changes to the system or flashed you a code.

The engine is designed to take care of itself. By interfering with the managment system, it's kinda hard to say what happened to you. But, it does sound like you may have warmed the engine to low flow over the ride plate. Speeding up might have given you a temp heat alarm, but once the coolant cooled back off, the engine should have run fine. If it got worse, the ECU and MPEM would have put the motor in reduced rpm's or limp mode and given you a trouble code.

You can cross the theory somewhat with a standard 4 stroke motor like your car. If you sit in traffic long enough, with no air blowing across the radiator, you will likely run hot.:cheers:

 

[Scott0321]

OK Great advice

Snipe as usual very helpful and informative.

The loud continious beep was insane and since I did not know what was going on I shut er down. Better than safe than sorry was my rational . If this happens again now I know. I'll keep the speed up and IF it's an issue the electronics will be smarter than me.

 

[seadoosnipe]

4 TEC technology...

The computer systems of these motors are awesome good. That's why they cost so much to take to a shop. You have to help the dealer pay for the software he uses to communicate with your motor.

The ECU receives the information from a host of inputs, about 14 sensors if I remember right. The information the ECU gets is shared by the MPEM. The MPEM makes the decisions on what needs to be done and tells the ECU to make the changes.

If you are running at lower speeds again for a prolonged period, throttle up and get the alarm, wait for a few minutes to see if it clears. The alarm is scary but see if the engine can make it's on adjustments or at least generate a code to tell you what happened.

Then, you can come back to the forum and look up the codes here. Some of these things can be fixed by you, others have to go to the certified serice creep........:cheers: