water pressure gauge and solenoid

[KayDubATC]

So far no help from the Triton board. New to me 2016 21 TRX. Water pressure gauge stuck at 20 psi. How can I tell if the solenoid is bad or the gauge is bad? And where can I get a replacement solenoid if need be?

solenoids.jpeg

[Champ 2001]

Most boat water press gauges are operated by water press from your engine. Yours has wires to it? Can you verify that your water press gauge doesn't have a water line to it?

[Champ 2001]

If it indeed has a water line going to it, disconnect the line on the gauge, then run the motor to see if you have water to the gauge. Possibly clogged with debris.

[KayDubATC]

Water pressure gauge only has a wire harness going to it from one of the solenoids/actuators in the pic. There is no water line going to the gauge, only to the solenoids.

[Champ 2001]

Then take the ground wire off the gauge and put a jumper wire to a KNOWN good ground. The needle should deflect fully to the right, remove it and should go to zero.

[Common Cat]

I have the same setup on my 2013 Ranger 521 with 250 SHO. I have not been able to locate a place to purchase the sending unit. I did clear some debris in the water line going from the engine to the sending unit, but that still didn't allow me to register anything on the gauge once reattached. If you find a place to order the sending unit, please post in this thread. The advice above is a good way to troubleshoot and ensure the gauge is not faulty.

[KayDubATC]

I took the water line off the sending unit and blew some compressed air into it with the ignition on and the gauge moved, but then stayed at 30 psi and will only go down a little if you smack the gauge. I have a new gauge on order. Hopefully that does it.

[mikesxpress]

It's an analog gage fed by water pressure. The wiring is to light the gage. You will want to add a tap drain to empty the water to the gage during below freezing temperatures or it will damage the gage again.

Better option is to replace the gage with an electronic fed one if you have that option for your engine.

[KayDubATC]

It is an electronically fed gauge. The water line goes to a solenoid, not the gauge itself.

[blkfalc4]

It's an analog gage fed by water pressure. The wiring is to light the gage. You will want to add a tap drain to empty the water to the gage during below freezing temperatures or it will damage the gage again.

Better option is to replace the gage with an electronic fed one if you have that option for your engine.

Errr, I'd say no it's not a water fed gauge. It utilizes a transducer from the water pressure to make an analog process voltage to the actual gauge.
His pic shows 2 transducers, one for psi and the other for speedometer most likely.

[retiredmechanic]

After looking at the pictures several times, the insulation washers are cracked on the lower sender. IF that is the pressure sender, water may have gotten in and corroded the sender.

[clayshooter]

https://www.hodgesmarine.com/vdo360-...All%20Products

This should work