Jump to content
Sign in to follow this  
Peck

Livewell pump issue

Recommended Posts

My Nitro has 2 livewell pumps. Both can pull water from outside the boat and one is used to recirculate as well. The recirc pump has started to act up. Basically when I flip the switch you can hear the pump run but with very little power and really low water flow comes out the head. It acts the same on outside pump in or on recirc. I took the pump out and cleaned it up, hooked directly to the battery and it sounds fine, plenty of rpms out of it. Put it back in the boat and has the same issue, low rpms and sounds like it is only about half power. I had an old pump laying around so I swapped it out and had the same issue in the boat. So my problem is not the pump itself. 

My question is what should I do next? Is it something in the wiring or something in the switch/timer? How do I check both? Thoughts?
Thanks!

Share this post


Link to post
Share on other sites

Something is draining power.  Have you traced the wiring from the pump back to the battery?  You may have knick in the insulation (double ground) or maybe a connector has become corroded.

Share this post


Link to post
Share on other sites

I have to prime my main intake all the time because there are so many shad scales in all my hoses

Share this post


Link to post
Share on other sites

Peck I'd start with making sure there is nothing in the hoses, then I'd also make sure that a hose isn't curved, or bowed, upwards somehow, from the intake to the pump. If it is, air can get trapped in that spot, and cause vapor lock, if that makes sense. 

Share this post


Link to post
Share on other sites
3 hours ago, 31Airborne said:

Something is draining power.  Have you traced the wiring from the pump back to the battery?  You may have knick in the insulation (double ground) or maybe a connector has become corroded.

I haven't traced the wires. I've only looked at the end at the pumps and the end at the switch. What does in between I don't know. Not the best serviceability with the design. The pumps are an absolute pain in the butt to get to. 

 

3 hours ago, rusty50576 said:

I have to prime my main intake all the time because there are so many shad scales in all my hoses

 

1 hour ago, SteveHTN said:

Peck I'd start with making sure there is nothing in the hoses, then I'd also make sure that a hose isn't curved, or bowed, upwards somehow, from the intake to the pump. If it is, air can get trapped in that spot, and cause vapor lock, if that makes sense. 

I don't think it's a problem with the hoses, but I understand what both of you are saying. Even with the pump not hooked to a hose at either end, you can hear a difference in the working pump and the non working pump. Which makes me lean toward wiring or the switch.

I guess I'll run a temporary wire from timer to pump and see what it does. Then go from switch to pump bypassing the timer and see what that does. I know it works going straight from pump to battery, so the problem has to be somewhere in between.  

Share this post


Link to post
Share on other sites

I misread what you said the first time. I was thinking it was sucking air, for some reason. 

Share this post


Link to post
Share on other sites

Got a few minutes to mess around on this problem last night. I went wild with the volt meter and finally found the bad plug connection. I was getting 12 volts before the connection and only 7 after on the pump side. Cut it out and replaced and good to go now. Thanks for pointing me in the right direction fellas. 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this  



×