Bilge blower not working on my 190 Sport!

B

bassadict69

Member
Feb 8, 2013
64
Benton, La
Boat Info
2012 190 Sport
Engines
4.3 mpi
I posted this in the Sport Boats forum but wanted to post here also...hope that is ok!

The bilge blower on my boat is not working at all. I pulled the blower, rigged up a couple wires off my battery and when I touch the terminals in the end of the connector, the fan works.

I used a meter and am getting power to the plug that the fan plugs into. I plugged the fan back in and still no power, checked for power at the fan side of the connector with it plugged in and had no power.

Bad connector somehow even though it works when directly touching wires to the terminals?
 
You have power at the connector, but do you have a good ground on the other wire?

How about a "wiggle test"? Turn the blower switch on and wiggle the wires. Might help to find a loose or poor connection.
 
I have wiggled, pulled, and pushed on all the wiring and connectors...all seem solid and the fan never would kick on when doing so.

Switch should be good since I have power to the end of the harness.

I think my only other option is to cut loose the ties holding the harness up, cutting off the connector and hardwiring it direct without a connector.
 
I played with it some more and all I get is a real low hum from the fan that I can barely hear...that is with it plugged in using the connector.

Is it possible for the connector to go bad? It gets full power and runs fine when wired from the battery to the fan connector.
 
If you have a weak or poor ground connection, you will have low voltage at the blower. This will result in the buzzing and/or poor performance.
 
If you have power all the way out to the connector but once you plug it in to the blower connector you don't have power jump the connecters and see what happen.

1) The fact that you can run the blower on an independent battery,
2) That you have power to the plug/connector but no longer have power once you plug the boat connector to the blower connector but can hear the blower motor humming is strange. If you no longer have power when they are plugged in the motor should not humm.

You either dont have enough electric going to the blower or a bad ground or the connectors are bad, hence the suggestion to jumper the connectors so you can eliminate them from the equation.
 
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I cut the connector off the fan and used jumpers from the boat harness to the bare wires of the fan...still nothing. I moved the negative jumper from the boat harness to the boat battery...still nothing.

Measuring the ends of the two jumpers when coming from the boat harness, I measure 11.2 -11.5 volts. Shouldn't this be enough to run the fan?

My next step is to cut off the boat harness connector, but this boat is so new, I hate to go hacking into the wiring!
 
bassadict69 said:
I cut the connector off the fan and used jumpers from the boat harness to the bare wires of the fan...still nothing. I moved the negative jumper from the boat harness to the boat battery...still nothing.

Measuring the ends of the two jumpers when coming from the boat harness, I measure 11.2 -11.5 volts. Shouldn't this be enough to run the fan?

My next step is to cut off the boat harness connector, but this boat is so new, I hate to go hacking into the wiring!
Click to expand...

Turn switch for blower to its on position then:

Take DVM and place + lead on boat blower wiring harness hot wire and ground negative lead of DMV on good known ground (boat negative battery post), take note of reading, then place DVM + lead on boat blower wiring harness ground wire and ground negative lead of DVM on good known ground (boat negative battery post) take note of reading if it is the same as in setp 1 (I assume 11.2 - 11.5 based on earlier posts) then you have a short to ground on the boat wiring.

Usually when you have a short to ground you blow a fuse as the amperage of the current exceeds the rating on the fuse when there is short to ground.
 
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bassadict69 said:
I cut the connector off the fan and used jumpers from the boat harness to the bare wires of the fan...still nothing. I moved the negative jumper from the boat harness to the boat battery...still nothing.

You did not have to cut it off but you eliminated as a possible culprit.

Measuring the ends of the two jumpers when coming from the boat harness, I measure 11.2 -11.5 volts. Shouldn't this be enough to run the fan?

Theoretically yes unless the blower motor is failing

My next step is to cut off the boat harness connector, but this boat is so new, I hate to go hacking into the wiring!
Click to expand...

You do not have to, this is a fairly simply issue to trouble-shoot although some of your findings are puzzling
 
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So technically that means the wiring on the boat side is good and the connector is good.

What is the value of the fuse on the blower circuit
 
Volts and amps are two different things. You could have 12.5V at the fan, yet it still may not work if there aren't enough amps flowing to turn the motor. It sounds like you're losing power somewhere. Is everything else working properly?
 
sibnai1 said:
What is the amp value of the fuse on the blower circuit???
Click to expand...

It should be 7.5 amps.

Check fuse for corrosion.

I'm wondering if maybe there's an issue with the switch as I would expect that before an issue with the wiring. Maybe jump + & - 12V to the downstream side of the switch to at least narrow down the "search"field. Sib, what are your thoughts on that?
 
Lol I was asking the OP to physically chec k the fuse to make sure it was the correct value fuse installed
 
sibnai1 said:
Lol I was asking the OP to physically chec k the fuse to make sure it was the correct value fuse installed
Click to expand...

I figured that. But since he wasn't online right now and I was, I would at least tell you what it "should" be. :smt001 He can report back on what is actually there.
 
First thing I checked was the fuse...can't remember but it was a 7 or 7.5. I even put a new one in it's place even though the other was good.
 
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