2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 104Get this manual

2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 104

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IGNITION
Engine Temperature Sender
If the engine temperature sender fails, the engine will idle at 900 rpm in neutral and the overheating control will activate

aThermostatEngi

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