97 Challenger 1800 contin. beeping but not overheating

[rjw]

hi all,
purchased a 97 Challenger 1800 with twin 110s this spring. Had it on the water only once so far and after a short while I noticed that when idling for a bit it would start continuous beeping. I shut if off and restarted and would be ok for a while as long as I had it rev'd up then back to beeping when idling. I realize from all manuals that continous beeps is overheating (in some newer Sea-doo's it relates to oil but should not be the case here)
Now, I'm checking it out on land connected to water. Water flow is perfect, disconnected sensors and also checked temp sensors - they work great (took them off to test in boiling water), engines are both definitely not overheating and sensors are functioning normal.
When I start either engine, after about 20 to 25 seconds, I get a continuous beeping.
Absolutely everything else works great.
Something in the MPEM???
Anyone recognize this?
thanks for any assistance
Ryan.

 

[seadoosnipe]

beeping?...

No, this is a problem either in your sensor or the water flow. You can check the sensor in boiling water, but that only tells you whether or not the switch is opening and closing. You have no idea at what temperature is actuall opening the switch, do you?

Leave the temp sensor wires off and run it. See if it beeps then.

 

[rjw]

thanks for the quick reply. I had tried it with them disconnected. However, as my memory is sometimes questionable, thought I'd take the cover off and try again. Glad I did, as it's a little later in the evening now - and a little darker, the beeping started as expected, however I now noticed the light on the low fuel switch on the dash (which you have to push to shut off the beeping). Ok, I feel pretty stupid at the moment, however I'm not sure why Sea-doo chose the same beeping for low fuel and over-heating? Never seen this switch on any other machine I've owned. Not a total waste, as I now know my machine a bit better and fixed a couple of things on the way. I had put in about 70 bucks premium in there on top of what little I bought it with - but I guess that doesn't go too far anymore.

Sorry for wasting anyone's time.. doubt anyone else will miss the light??.. unless it's burnt out.
:cheers:

 

[kustomkarl]

I would stick to running the regular 87 octane fuel because you are just wasting good money to run "premium fuel". That engine is designed to run on regular, so anything over that is not doing anything, its over kill. The extra octane is going out the exhaust pipe.

Karl

 

[rjw]

premium vs. regular

I had researched the question of which gas to use for a while, it seems to be widely debated. The only thing that made me sway is that I most recently found out that Canada gov't has mandated that regular (and mid grade?) has to have at least 10 percent (i think it was 10 or close to) ethanol gas. As ethanol is very unpredictable in a 2 stroke I didn't want to take the chance that that percentage would make a diff? The majority of stations now have a little sticker on the pumps indicating 'may contain ethanol'. However premium is unaffected. Maybe this is old news to some? and maybe it makes no difference? I'll probably go back to regular soon to see how she runs?
thanks.
ps. don't mean to start a new thread on premium vs. regular