2002 Mercury 115

[Maine-Basser]

Having a problem with a constant beep. It occurs after 3-5 minutes on the water at at least 3000 rpm. Can not get alarm to sound when hooked to hose in driveway. I believe it is overheating, but not sure (might be faulty thermostat). Have great flow from tell-tale, and it is a little warm(water). Do you think it is the waterpump or thermostat? Please help.

 

[The Marine Doctor]

Re: 2002 Mercury 115

I would think the problem is a weak waterpump. While you have it hooked to the garden hose the water is also being forced up through the engine. Assisting the water pump.<br /><br />TMD

 

[CU2NITE]

Re: 2002 Mercury 115

You may also want to inspect the poppit valve, it opens up at higher rpms to allow more water to flow for cooling.<br />Good luck and let us know.<br />CU<br /><br />----------------------<br />RUNNING THE MOTOR WHILE LISTENING TO THE HORN WILL MAKE YOU MORN!!

 

[Maine-Basser]

Re: 2002 Mercury 115

Thanks to Marine Doctor and CU2NIGHT. I am replacing the waterpump on Tues. and I will let you know if it fixes the problem.

 

[Maine-Basser]

Re: 2002 Mercury 115

Well....it was sand cloged in my thermostat housing. Thanks for all the help.

 

[The Marine Doctor]

Re: 2002 Mercury 115

Well...its good you found out <br /><br />TMD

 

[werdna]

Re: 2002 Mercury 115

Just a suggestion, do you really want your thermostat? they only ever seem to cause problems! Of course it depends on your environment- in Aus its warm enough all year round not to warrant needing a thermostat to allow the engine to warm up. Indeed our motors have come standard without them, although the housing was there!