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Ask Dominick Your Own Question
Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
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Have a mariner(###) ###-#### ***** replaced impeller and looked

Customer Question

have a mariner(###) ###-#### ***** replaced impeller and looked at thermos[do not know what thy are supposed to look like] motor still overheating right from get go with alarm sounding. water is intermittent and after short time is hot. have been told poppit only comes into play at 2500 or so. PLEASE HELP...
Submitted: 2 years ago.
Category: Boat
Expert:  Tan replied 2 years ago.
Hello. My name is***** this pull the thermostat covers off and start the engine does the engine pump water up to the t-stat housing? Does the alarm sound soon as you turn the key on? Replace the thermostats.
Customer: replied 2 years ago.
we pulled the thermos. and water is coming up to the holes almost at once. the alarm is coming on as soon I turn the key and after only maybe a minute or two the water coming out of pee hole is very hot. also did a temp check on thermos. to see if they are opening and closing and it appears they are. have none to replace them with at this time. water test was done with thermos installed yesterday. THANK YOU...
Expert:  Tan replied 2 years ago.
If the alarm is coming on as soon as you turn the key on and staying on then the sensor is bad. Start the engine and disconnect the temp sensors one at a time. Does the alarm go off? What was the temp reading on the thermostats?

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