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Enticer Rick

09-30-2012 08:33 PM

Oil Pressure Sensor

Can you guys help me locate it (Merc 7.4), think I need to replace it. The boats a 2000 312 Formula Fastech.

mike tkach

09-30-2012 10:26 PM

are you looking for the guage sender or the alarm sender,they are 2 seperate senders.

Griff

10-01-2012 12:14 AM

The gauge sender is down below the #7 spark plug and screwed into the block.

Enticer Rick

10-02-2012 06:47 AM

Thanks Griff,

Is it hard to replace?

cubicinches

10-02-2012 08:48 AM

Quote:

Originally Posted by mike tkach (Post 3787481)

are you looking for the guage sender or the alarm sender,they are 2 seperate senders.

That's correct.

The gauge sensor will have a light blue wire going to it. The alarm sensor is the smaller of the two, and has a tan wire with a light blue stripe going to it.

Griff

10-02-2012 12:50 PM

Quote:

Originally Posted by Enticer Rick (Post 3788370)

Thanks Griff,

Is it hard to replace?

Pretty simple as long you can get to it. It just screws into the brass fitting in the block and has one wire going to it. Do not use a sealer on the threads or the sensor will not ground.

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