Mercury pitot tube pressure sender fault

[mitchc]

In the last week I've been getting a speedo fault come up on the smart craft gauges. Traced it to a faulty pressure transducer. I asked local parts place for a price...£177!!!

I think I'll live with the fault as it doesn't affect the performance...unless anyone has a bright idea where I can get one for sensible money?

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[9D280]

Disconnect the sender, and run a hose to your console where you fit an oldschool pressure speedo?

On a more serious note, have you checked all electrical connections? assuming that fault is self diagnosed by the engine management, a dodgy connector will likley flag a sender fault.

[mitchc]

"On a more serious note, have you checked all electrical connections? assuming that fault is self diagnosed by the engine management, a dodgy connector will likley flag a sender fault."

Done all that, traced it all through with a meter, and swapped the sensor for the block water pressure sensor. The fault followed the sensor!
It's not a big problem, just a little annoying...

Thanks for the suggestion though.

[Cookee]

Turn it off and connect the Smartcraft to the GPS - pitot tube speed isn't that accurate anyway although it does give you speed through the water.

[mitchc]

Originally Posted by Cookee

Turn it off and connect the Smartcraft to the GPS - pitot tube speed isn't that accurate anyway although it does give you speed through the water.

Will turning it off stop the alarm?
I've got a paddle wheel on the gps & for the outboard so that'll give me speed speed through the water.

Thanks for the advice.

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[uncle al]

i have seen bits of weed/grit go up the tube (yes even tube with that small bore) and make the switch give eronous readings.