Yamaha 150 HPDI Alarm ???

[nevron]

Hello,<br />I have a 2003 yamaha hpdi 150 2 stroke. I had an alarm over 4th of july weekend, that kicked my rpm's down to 2000 rpm. I put it in the shop and they found it out to be an over heating sensor. It ran great for about 6 or 7 days over about 3 weeks. Then on a cold start, the alarm came on for about 30 second and then shut off. I kept trying it about 10 times within an hour, and it kept coming on. I put it back in the shop and of course, the alarm will not go back on, so there is no way for the mecanics to hook it up to the computer and find out what is wrong. Not over heating, since it was on a cold start, there is plenty of oil and no water in the gas or oil. Any ideas way the alarm came on breifly and would not come on while in the shop?<br />thanks, Frank

 

[rodbolt]

Re: Yamaha 150 HPDI Alarm ???

I would suspect the water alarm. do you have a fuel management gauge? if so look for the red/white wire and make sure its not getting wet. also you can dissconect the water alarm foir a quick test. the engine filter has a large black float that will rise with the water level. floats in water not gas. wily japs .my opinion of the laptop diagnostics falls each day. we had one overheat with the laptop on and it never stored a code. the whole time the horn was buzzing it said diagnoses record unavalible. even after clearing the condition there was no record.

 

[nevron]

Re: Yamaha 150 HPDI Alarm ???

Thanks Rodbolt,,<br />But I checked the engine filter and the water seperator and not a drop of gas. I did disconnect the wire on the engine filter the first time it was happening, and sometimes it would shut it off, and sometimes it wouldn't. thanks.....

 

[nevron]

Re: Yamaha 150 HPDI Alarm ???

Sorry,<br />That sould of read <br />But I checked the engine filter and the water seperator and not a drop of WATER.

 

[bigbrownbuku]

Re: Yamaha 150 HPDI Alarm ???

for that model nevron some were fitted with the sensor and/or the wiring for future use. check all your electrical plugs for water entry especially your main harness plug. is your control box exposed to the elements at all?