Where is temp sensor on 1985 70 hp Merc

[Philom]

Wondering where the temp sensor wires are located and what color on 1985 70 hp Mercury? Have chirping coming from alarm and would like to eliminate either the temp sensor or oil level sensor

 

[bushman7198]

Re: Where is temp sensor on 1985 70 hp Merc

the temp sencer is right above the first spark plug on the right at top should be brown thier is another one to the left of the secound spark plug

 

[Faztbullet]

Re: Where is temp sensor on 1985 70 hp Merc

Got to be a 1987 if its got a oil sensor and tank under cowling, discoccect the blue wires under tank to check to see if its a bad float or oil module.

 

[Philom]

Re: Where is temp sensor on 1985 70 hp Merc

it is not the oil sensor as I cleaned up the tank, unplugged the wires when hooked it back up and still chirped. Tracked it down to the heat (brown) wires and when disconnected from the oil/heat warning module it quits chiriping. So I don't think it is the heat sensor but the warning module. Not sure on cost but will find out now.