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  1. I have a 2010 Chaparral Sunesta 284. While just under way for about 10 minutes the Coolant Too High warning sound came on. Coolant temp got up to 215 degrees. I tried putting the boat in reverse to see if I had something lodged as that had happened in the past. That didn't help. After letting the coolant temp get to a level where I could restart the boat I was able to get the boat back to my dock. As I was backing into my slip the temp started to drop quickly, down to 160 degrees. I took the boat back out for a few minutes to see if the temp would continue to drop. It stayed steady at 159 degrees, which I believe is still too warm. I'm wondering if the quick drop in temp is an indication that perhaps by having the boat in reverse I dislodged something that was causing a blockage. Not sure what the running temp should be or if the issue is fixed.
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