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Ok guys so I had a chance to take it out today. Assuming the smart craft is fairly accurate I got to see what temps the boat ran in the water. Starting out it warmed up kind of slow I think staying around 128-130 at idle speed. Slow speed got around 140-145. Took it out in the ocean a good...

Yea like I said it always ran from 152-160 every time I have taken it out. Then I had the problem with the impeller. After we replaced it we started it up and it was in the 156-160 range. The last two times I have started it up It doesn't go up more than 134 even after 10-12 minutes letting it...

Ok guys thanks for the responses. Ill hopefully be out on Friday I will see how it goes.

We got some of the broken pieces. I don't know about all of them. All the blades on the impeller were broke. I'm not sure if it has ever been changed before because the boat didn't have much use. I will be taking it out on Friday if it runs that cool could it be that the thermostat is stuck open?

Hey Guys how is it going today.. About six months ago I purchased a 03 24sd 350 mag mpi. Had 68 hrs on it. Took it out a few times everything ran really great. Always ran between 152-158 degrees. The impeller went bad (it looked destroyed but it probably has never been changed before) when i...