If the impellors are a year and a half old I would go ahead and do impellors on both motors. That way you can check for wear in the housings and address the pressure sensor at the same time. Until you get the pump housing off you will have no idea if it is the sensor, bad connection, etc. The weather-pack gaskets easily fall out of the connectors when you service the pumps so it could be a problem at the connector.

Explain more about this weather pack gasket? My plan was to diconnet the sensor, and remove the sensor from the housing, and check to see if its plugged. that should be alot easier then pulling the whole housing off.

If i pull the housing I for sure would do new impellors, no questions asked there. but would rather not do that mid season for them to sit all winter long, let alone pulling the housings is going to SUCK on this boat.. and To be honest, impellars dont normally wear out that fast. prevnative maintence I understand, but they last longer then 100 hours in 1.5 years.

The harness connector for the sensor should have a purple or green ribbed gasket over it. This is to make a watertight seal when you plug it into the sensor. It is easy for the gaskets to fall off when servicing the pumps and you not know they have fallen off. That could lead to corrosion. On a new to me boat that is having water pressure alarm issues I would want to look at the whole assembly on a bench.

Impellor life varies. I've seen them go 300 hours and I've seen them go in less than 100. I don't let mine go much past 100.

First Let me say I appropriate the response. Chatting about something creates better ideas.

I plan to replace the impellas, at the start of next season. I normally shoot for 2 seasons out of a set and then replace no matter what. UNLESS i have the pump off, then its getting a new one just cause its there.


The purple rubber connector gasket, GO IT. know what your talking about now, normally has 3 ribs on it too. on all the wiring harness plugs.

Corrosion on the connector could be the problem as well. and unplugging and cleanning contacts, could possible fix the issue as well. I will unplug it, check for gasket, and then plug back in and see if it still pops the code. If this makes code stay away then thats the problem if not....

then uninstall the sensor, and check for a clogg. clean and check again...

It sounds like a pretty cut-and- dry issue. A faulty sensor. Happens frequently on the 496.

The only other possibility is a faulty sensor cap/connector or maybe a PCM connector problem, which also happens.

I scanned codes last night, still poping up "37 sea water pressure low". after I clear all faults.. so problem still there, just checking.

So I unplugged the sensor. cleared codes, re-scanned. "36 Sea water pressure Hi" then pops up..... interesting.. so open loop in that circuit, and it throws a 36 HI code.

Then I plugged it back in, cleared codes, re-scanned NOTHING, problem fixed.....hmmmm?

UN-plugged again, and cleared codes, re-scanned, "36 Sea water pressure Hi" pops up again with the open loop. ok, cool got that.

So I plug back in, making sure the purple 3 ribbed gasket is in place, and clear codes, re-scanned. No Codes..... maybe it was loose connection?

Fired up in the hose, and idled a little, and a few revs, still nothing beeps. shut it down and re scanned again, still clear. so is it fixed? we will find out when I take it to the water I guess.

My friend fought this issue for months and finally had to replace the sensor cap. Every thing fine until he got out and bounced around a little on the bay and it would fault again. Replacing the cap fixed the problem.

Lets hope I don't have this problem. Its not in a easy spot to be working on ha.

if you are going to change impellers it is easiest to just take the whole pump right out and work on them on a bench and then reinstall the complete pump to hard to mess with the parts when attached to the motor. At least that is what I remember from my Eliminator. Maybe yours are easier to get to. It used to be impellers got replaced every year at the beginning of the season but they seem to be a little better made these days. If you don't run in silty water or suck up any sand they should last a while. The grit is what kills them. But also if you have a long time where you don't use the boat one side of the impeller is flattened in the housing for a while and can weaken those blades. Another tip, when you do the swap is start them up for the first time with the boat fully in the water they prime a lot easier than on the hose. If you get it wrong on the hose you can easily ruin the new impeller you just installed.

I appritite the info. I would pull the whole pump, it always seems to be easier that way.

also, somethingt o note, use liquid dish soap as lube to get the impellers in the housings, and leave some in there as primer... they spin nice and easy and makes a good seal as they suck up water. Keep you from burning them up on first start up.