Check

 

Defiance Boats!

LURECHARGE!

THE PP OUTDOOR FORUMS

Kast Gear!

Power Pro Shimano Reels G Loomis Rods

  Willie boats! Puffballs!

 

Three Rivers Marine

 

 
Topic Options
Rate This Topic
#1012744 - 08/10/19 04:44 PM Help, Depth Finder shuts down, when starting motor
DrifterWA Offline
River Nutrients

Registered: 04/25/00
Posts: 4587
Loc: East of Aberdeen, West of Mont...
I have a custom made boat, River Wild. When I ordered the boat I want dual batteries, up front..for weight distribution.

The problem from the "get go", if I start the motor either my ETech 105 or my Yamaha 8 and the depth finder is on....motor starts but depth finder goes blank.

I had 2 marine batteries, size 24, just replaced the 24's with 2 marine size 31. I thought the bigger batteries would eliminate the problem...
played in the Chehalis today....same problem.

I have gotten good at re-starting the depth finder but would prefer not to have to do that....

Looking for a possible solution?????


Oh, I do have a perko switch, doesn't matter if on 1, 2, or All





Edited by DrifterWA (08/10/19 06:04 PM)
_________________________

"Worse day sport fishing, still better than the best day working"

"I thought growing older would take longer"

Top
#1012764 - 08/11/19 10:10 AM Re: Help, Depth Finder shuts down, when starting motor [Re: DrifterWA]
Larry B Offline
River Nutrients

Registered: 10/22/09
Posts: 2743
Loc: University Place and Whidbey I...
Since I am chasing (so far unsuccessfully) my own 12V gremlin I won't offer any suggestions on what may be causing the problem. However, until you can sort it out you might want to consider a battery solely for the depth finder and recharge as necessary at home.
_________________________
Remember to immediately record your catch or you may become the catch!

It's the person who has done nothing who is sure nothing can be done. (Ewing)

Top
#1012788 - 08/11/19 09:39 PM Re: Help, Depth Finder shuts down, when starting motor [Re: DrifterWA]
Kyle_A Offline
Spawner

Registered: 12/03/00
Posts: 766
Is this a starter switch issue? That is the finder is wired into the starter switch and therefore it is disconnected from battery every time you cycle the key? You might try as a test, to wire your finder directly to the battery - see if that solves it. Many starter switches kill power as you cycle from off to start, back to on.

Top
#1012799 - 08/12/19 08:19 AM Re: Help, Depth Finder shuts down, when starting motor [Re: DrifterWA]
DrifterWA Offline
River Nutrients

Registered: 04/25/00
Posts: 4587
Loc: East of Aberdeen, West of Mont...
Kyle_A:

Now that sounds like the problem.....boat builder put the Perko switch in the most terrible place to try to work on but for $$$$, bet I can find a marine shop to "help me out".

Thanks
_________________________

"Worse day sport fishing, still better than the best day working"

"I thought growing older would take longer"

Top
#1012805 - 08/12/19 08:51 AM Re: Help, Depth Finder shuts down, when starting motor [Re: DrifterWA]
GodLovesUgly Offline
Repeat Spawner

Registered: 04/20/09
Posts: 1204
Loc: WaRshington
I have had this problem and seen it on other boats as well. When the dealer did the FF install they wired the 12v lead into the ignition circuit behind the dash. They spliced in to the hot lead and it would cut out every time the motor fired and cause the FF to shut off then turn back on.

My solution was to just pull the FF hot lead from the ignition wiring entirely and wire it to its own dedicated, fused circuit. Problem solved.
_________________________
When I grow up I want to be,
One of the harvesters of the sea.
I think before my days are done,
I want to be a fisherman.

Top
#1013200 - 08/27/19 09:06 AM Re: Help, Depth Finder shuts down, when starting motor [Re: DrifterWA]
Slow Boat Offline
Eyed Egg

Registered: 12/26/12
Posts: 8
First thing I'd do is get a multi meter from Harbor Freight. An acceptable digital is less than $7. Put it on the power terminals on the plug that goes to the depth finder and see what the voltage reads with the main in off, start and run. Off 12.6, Start 11.6, run 14 would be expected.

Some finders are oversensitive to battery voltage and do a shut down when no one else cares. I have a Fusion radio and an old Lowrance HDS that occasionally do the same thing. Never when starting my T8 though.

Lowrance HDS Gen 2 Touch spec is 10.8 to 17 vdc. which should allow it to continue running during a motor starting draw down. I personally do not trust the 10.8 bit.

Top
#1013210 - 08/27/19 07:35 PM Re: Help, Depth Finder shuts down, when starting motor [Re: DrifterWA]
RUNnGUN Offline
Spawner

Registered: 12/06/07
Posts: 929
Usually FF are voltage sensitive as stated by Slow Boat, meaning a drop or spike can cause them to shut down. Lots of issues can cause either situation. Not knowing your boat if you keep that in mind while troubleshooting it may help to isolate the problem. If not experienced in troubleshooting DC, your best bet is get it to someone who is.


Edited by RUNnGUN (08/27/19 07:37 PM)
_________________________
"After fishing for Steelhead for over 40 years, Steelheading as I know it is gone in Puget Sound!"
ME

Top
#1013211 - 08/27/19 07:36 PM Re: Help, Depth Finder shuts down, when starting motor [Re: DrifterWA]
DrifterWA Offline
River Nutrients

Registered: 04/25/00
Posts: 4587
Loc: East of Aberdeen, West of Mont...

Thanks for the help...I'll give one of the above a try.....


Good luck on the fall salmon season.....
_________________________

"Worse day sport fishing, still better than the best day working"

"I thought growing older would take longer"

Top
#1013212 - 08/27/19 07:41 PM Re: Help, Depth Finder shuts down, when starting motor [Re: DrifterWA]
steely slammer Offline
Repeat Spawner

Registered: 02/24/00
Posts: 1341
I say sink the damn thing and start over....
_________________________
ON YOUR FEET OR ON YOUR KNEES

Top
#1013214 - 08/27/19 08:23 PM Re: Help, Depth Finder shuts down, when starting motor [Re: steely slammer]
fish4brains Offline
Dah Rivah Stinkah Pink Mastah

Registered: 08/23/06
Posts: 6231
Loc: zipper
get a new depth finder
_________________________
...
Propping up an obsolete fishing industry at the expense of sound fisheries management is irresponsible. -Sg





Top
#1013215 - 08/27/19 09:02 PM Re: Help, Depth Finder shuts down, when starting motor [Re: DrifterWA]
DrifterWA Offline
River Nutrients

Registered: 04/25/00
Posts: 4587
Loc: East of Aberdeen, West of Mont...

Thanks for the extra comments....lol

Still, have a good fall season......Humptulips for Chinook, and other GH rivers for Coho.....
_________________________

"Worse day sport fishing, still better than the best day working"

"I thought growing older would take longer"

Top
#1013261 - 08/29/19 11:07 AM Re: Help, Depth Finder shuts down, when starting motor [Re: DrifterWA]
mitch184 Offline
Returning Adult

Registered: 02/02/05
Posts: 331
Loc: Lake Stevens
Similar to what others have said... it's a voltage drop because your batteries are up front. Lowrance are the most finicky i've seen for this.

If you make sure you have good clean power to the fish finder, the only other options (besides getting a different FF) are to put the batteries in back or run very large 1/0 or 2/0 battery cables from the batteries to the motor. It's usually the voltage drop on the batteries from starting the motor.... not poor power to the FF.
_________________________
Team Haters

Top
#1013279 - 08/29/19 06:24 PM Re: Help, Depth Finder shuts down, when starting motor [Re: mitch184]
RUNnGUN Offline
Spawner

Registered: 12/06/07
Posts: 929
Originally Posted By: mitch184
Similar to what others have said... it's a voltage drop because your batteries are up front. Lowrance are the most finicky i've seen for this.

If you make sure you have good clean power to the fish finder, the only other options (besides getting a different FF) are to put the batteries in back or run very large 1/0 or 2/0 battery cables from the batteries to the motor. It's usually the voltage drop on the batteries from starting the motor.... not poor power to the FF.


Sounds like the culprit! Length of wire and wire size, also copper vs aluminum. Ohm's law applies here. Use bigger wire and copper to help that voltage drop.
_________________________
"After fishing for Steelhead for over 40 years, Steelheading as I know it is gone in Puget Sound!"
ME

Top
#1013294 - 08/30/19 11:14 AM Re: Help, Depth Finder shuts down, when starting motor [Re: DrifterWA]
mitch184 Offline
Returning Adult

Registered: 02/02/05
Posts: 331
Loc: Lake Stevens
Yep... I'm 99.9% confident that's it. Because I've dealt with it on the last 2 sleds after months and months of troubleshooting and racking my brain.

Right now I have 17' of 2/0 battery cable running from the batteries to a post in the rear. Overkill... not for a modern DI 2 stroke. Everything else... slightly overkill.

Drifter, what size wires you got running from the batteries to stern? 4 gauge? Does your etec run really rough at idle and low rpms?
_________________________
Team Haters

Top
#1013308 - 08/30/19 10:26 PM Re: Help, Depth Finder shuts down, when starting motor [Re: DrifterWA]
DrifterWA Offline
River Nutrients

Registered: 04/25/00
Posts: 4587
Loc: East of Aberdeen, West of Mont...
mitch184:

Bingo.....I know you are correct.....boat was custom built, person knows how to build boats.....not so much with the wires that run from stern to batteries in front.

I was told the cable were not the correct sizing but would have to tear up the floor and replace with 2/0 cable.....I think this is the problem but time and $$$$$$$ invested just doesn't seem to offset the "re-starting" the fish finder...

ETech runs awesome from idle to 5100-5200 RPM, at 39-40 mph....The 150/105 ETech is one heck of a motor, 2 stroke factory installed pump so runs better all the way thru the RPM range.

Will leave it this way, until summer 2020.....then maybe the 2/0 cables.
_________________________

"Worse day sport fishing, still better than the best day working"

"I thought growing older would take longer"

Top

Search

Site Links
Home
Our Washington Fishing
Our Alaska Fishing
Reports
Rates
Contact Us
About Us
Recipes
Photos / Videos
Visit us on Facebook
Today's Birthdays
zig
Recent Gallery Pix
Gibbs Delta Time Capsule
Driftin'
Who's Online
10 registered (Spoonfedhead, grumpyr, NOFISH, stonefish, Hanker, Driftin', 4 invisible), 351 Guests and 3 Spiders online.
Key: Admin, Global Mod, Mod
Newest Members
Sawcraft70, G rod, billfish3r, desert3, Crkr
11443 Registered Users
Top Posters
Todd 25126
Sol Duc 15660
Dan S. 15429
elparquito 13605
stam 12925
Salmo g. 12586
eyeFISH 12441
STRIKE ZONE 12107
Dogfish 10979
ParaLeaks 10513
Forum Stats
11443 Members
18 Forums
76899 Topics
898160 Posts

Max Online: 906 @ 11/18/19 03:16 PM

Join the PP forums.

It's quick, easy, and always free!

Working for the fish and our future fishing opportunities:

The Wild Steelhead Coalition

The Photo & Video Gallery. Nearly 1200 images from our fishing trips! Tips, techniques, live weight calculator & more in the Fishing Resource Center. The time is now to get prime dates for 2018 Olympic Peninsula Winter Steelhead , don't miss out!.

| HOME | ALASKA FISHING | WASHINGTON FISHING | RIVER REPORTS | FORUMS | FISHING RESOURCE CENTER | CHARTER RATES | CONTACT US | WHAT ABOUT BOB? | PHOTO & VIDEO GALLERY | LEARN ABOUT THE FISH | RECIPES | SITE HELP & FAQ |