Thread: Ultra 08 Heat sensor issue.
03-03-2008, 07:41 AM #1
Ultra 08 Heat sensor issue.
Ive been working on alot of race ready machines for 08. Endurance style boats.
Im finding that the new smaller exhuast size with the leaner ECU is making the exhuast temps exceed the sensor on the pipe. What this does is cause the pipe sensor to send a HEAT code to the ECU putting the machine into a 5K limp mode to lower temps.
At the moment the RD temp is a quick fix but truely a temperary item untill we figure it for Kawi so they can fix it on the 09 models. Robbing MF,s.
Still Im working on the issue and it does not seem to effect all units but alot of them are getting new heat sensors to only have it happen again and again.
From the information I have, the 07 and early 08 has different sensors then the later model 08 units. So this issue may fade away as the 07 stock of senors run out. Also the new RIVA exhuast system should lower exhuast temps by opening the exhaust and allowing free flow to aviod heat back up.
More on this as it becomes availible from RIVA.
03-03-2008, 07:43 AM #2
skip i think the headers that jay is working on will solve this issue as well... we ran my boat for some long distance passes after letting it warm up and the manifold was only slightly warm at best.... i think this may resolve your heat sensor issue
03-03-2008, 08:07 AM #3
Ive seen so much talk about these headers but nothing for us to test. So untill I see pics and unbiase testing then its fantasy to me.
You know how I role. Put it in my hands then Ill give you the true deal.
At the moment you have an 07 model that is not effect from what this thread is speaking of.
Man I understand your excited but can ya hold back a bit untill you have completed full testing of the unit. This thread you state you ran it long distances wide open but your oher thread you say you cant wait to open it up; that it was too cold to get sprayed.
Dont get me wrong, I am interested in the idea and will gladly get a set to try it out but this thread is about 08 issues not BLACKMGIC headers. This thead is about those who have 08 models effected from the sensor issue. Most will not install a header system to fix a sensor issue. The RIVA kit may work well for some but my true direction is to work with R&D and Riva for quick cheap and easy fixes. SO KAWI CAN STEEL THEM.
03-03-2008, 09:06 AM #4
Last edited by Region8Ultra250X; 03-03-2008 at 09:18 AM.
03-03-2008, 08:18 PM #5
have not had that issue on mine yet. Only thing that mine does sometimes is the battery warning buzzer that I read about on the 07's.
03-03-2008, 08:45 PM #6
03-04-2008, 01:11 AM #7
Thats just the nature of a Kawasaki, every Kawi I have had (5)always had the battery buzzer go off when starting the ski @ 60% of the time.
I have never been stranded by a dead battery.
03-04-2008, 02:40 AM #8
03-04-2008, 07:05 AM #9
Battery Buzzer secret
The batt buzzer goes off because you hit the start button too soon after
the immobilizer activation. The electrical system is ready when there is
no display. You wait for the FPO to go away, maybe
2/3 seconds, then hit start and you will never hear the buzzer.
now back to the 08 heat sensor topic...........
03-04-2008, 10:05 AM #10
Tom's on point. When FPO is displayed then the ECU is still doing its tests. If you hit the start during the test then the ECU logs the current voltage during starting and finds it to be too low.
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