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Author Message   Zecca Posted on Monday, March 19, 2012 - 07:45 am:        yesterday I lost another track day because this problem! the water temperature changes quickly from 185~194 to COLD COLD COLD!!! I think the injection identifies that the bike is cold and injects too much fuel, making failures My thermostat has been changed, there is no air in the system water temperature sensor? ECM problem? anyone have any ideas?   Two_seasons Posted on Monday, March 19, 2012 - 08:56 am:        I've read that the ECM only toggles the ground, so the fans only work (when hooked up via the harness) when they detect a completed circuit, namely the ground. I'd be checking all the connections between sensor and the fans. This has to be ECM related, as the resultant over-fueling is happening BECAUSE of the ECM.   Gofastalot99 Posted on Monday, March 19, 2012 - 10:39 am:        Perhaps the ECM is only responding to the information it is receiving. I wouldn't exclude the ECM as being at fault but I suggest the sensor or wiring may be at fault. Check for any loose connections, grounds, or frayed wiring. If you have an ohmmeter check for opens in the wiring when the wires are moved.   Jdugger Posted on Monday, March 19, 2012 - 11:04 am:        Have a low side recently? Bleed your coolant. This happens when air gets into the system and the temp sensor can't read the temps correctly. I know you think there's no air. There's air unless the temp sensor is failing. Follow the procedure in the service manual EXACTLY.   Pmjolly Posted on Monday, March 19, 2012 - 10:21 pm:        I just changed my coolant. I did the bleeding procedure by the book. It took what seemed like forever for the bubbles to quit coming out. They started getting smaller, and finally quit after close to 30 minutes. It ran cool the next day. I rode for 6 1/2 hours.   Zecca Posted on Tuesday, March 20, 2012 - 08:45 am:        this problem began to appear at the end of last year. after a low side the bike have a delay to warm up... ok... I change the thermostat when I changed the thermostat water added as required manual ok until Sunday! all right with the wiring Yesterday I changed the temperature sensor I bought at a auto parts, the same sensor chev tigra (WTF) tested in dynamometer apparently the problem is gone 121,8cv at the rear wheel (normal numbers?)   Jdugger Posted on Tuesday, March 20, 2012 - 10:46 am:        Bleed and bleed again. Bubbles will come out. Remember to let the bike come up to temp so the thermostat opens and you see the swirl in the coolant fill, but only let it run like that for a few seconds, maybe 10 or so, and add water as it swirls down and air bubbles out THEN TURN THE BIKE OFF before it gets to 190 or so. Let the bike cool, top off, repeat. The fact that this happened after a low side makes me almost 100% sure air in the system is the issue. I suffered the same.   Two_seasons Posted on Wednesday, March 21, 2012 - 10:13 am:        121.8 at the rear tire is a good # for stock. What Jdugger said...   Jdugger Posted on Wednesday, March 21, 2012 - 11:16 am:        Let me add, DO NOT BLIP OR REV. You must just idle the bike.

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