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Old 30 October 2010, 12:24   #1
Country: UK - N Ireland
Town: Portrush
Boat name: G'Noah
Make: Redbay
Length: 6m +
Engine: outboard petrol 225
Join Date: Sep 2009
Posts: 20
Ficht 225 apparent False Temperature Alarm

Thought I would take the rib out for a final blast today before lifting out for the winter.

Was out for about an hour with no problems but coming alongside the pontoon at low revs the over temperature alarm went off.

Had a problem a couple of times earlier in the season where the water flow through the EMM airlocked and needed bleeding, but this always turned on the "check engine" alarm and was cured by tightly cable tying the pipe to the top of the EMM water intake. Checked this out just in case but the flow through the EMM was fine.

Back to today's incident.

The tell tail was showing the usual strong flow and all looked ok.

I let the engine cool down just in case it was hot but the alarm still came on even with the engine cold.

Let the engine cool for 4 hours and the alarm cam on after 30 seconds of idle , before the engine should have been up to speed.

Put the computer on to the emm port but no faults were stored.

The alarm is now mostly permanently on with just the occasional flicker.

I have checked all the wiring to the water temperature switch and to the temperature sensor and I have jiggled the wiring loom between the engine and the display but this does not seem to match the occasional flicker of the red alarm light.

I will try and check the resistance of the sensor tomorrow but any previous experience or thoughts of this type of fault would be appreciated as I would like it fixed before I put the boat away for the winter.

Thanks in advance


westerlystorm is offline   Reply With Quote
Old 30 October 2010, 12:33   #2
Country: UK - England
Town: Essex/Vendee
Boat name: shockwave,Voluntry 2
Make: Pac 22/ searider5.4
Length: 6m +
Engine: 180hp turbo,yam 90
Join Date: Nov 2004
Posts: 1,010
Hi Gareth ,I used to have one only it was the 150hp .I had a simular problem .It does sou nd as if you know more than the dealers who changed the senser.I think you will find that there is a section of evinrude guru,s on boatmad forum they know everything.Hope its a help
PeterR is offline   Reply With Quote

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