Two weeks ago I got into shallow water and sturred up some sand for a couple minutes. This last weekend I noticed my engine temp was running about 60-80 degrees cooler. Normal temp is about 180 and current temp is 100-120. I have a 2004 I/O 4.3 liter mercrusier alpha one. Is it possible to have some sand stuck in the termastat causing it to stick open? Where and how can I ckeck the temp sensor and guage? Thanks
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