997 losing bottom

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mark poulson
Posts: 8703
Joined: Sun May 08, 2005 4:16 am
Location: Oakley, Ca.

997 losing bottom

Postby mark poulson » Wed Mar 09, 2016 8:15 am

I have an original 997 C unit, with a transom mounted transducer.
I've always been able to read depth even when on plane at 42mph.
I just started losing bottom when I get past 25mph.
It will read fine when I first get on plane, but then, once I get past 25, it will read fine for a few seconds, and then it drops to reading 3.9 feet until I come off plane again.
What caused the change?
Attitude plus effort equal success
CLEAN AND DRY

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scottsweet
Posts: 935
Joined: Mon Aug 22, 2005 11:52 pm
Location: Campbell, CA

Re: 997 losing bottom

Postby scottsweet » Wed Mar 16, 2016 6:55 am

Hi Mark,

Give me a call and maybe we can figure it out.
Scott Sweet

www.rangerboats.com
www.mercurymarine.com
www.humminbird.com
www.minnkotamotors.com
www.lews.com
www.odysseyfactory.com
www.dobynsrods.com
www.simmsfishing.com
www.peregrine250.com/
www.californiabass.org

mark poulson
Posts: 8703
Joined: Sun May 08, 2005 4:16 am
Location: Oakley, Ca.

Re: 997 losing bottom

Postby mark poulson » Wed Mar 16, 2016 7:12 am

P.M. sent.
Attitude plus effort equal success

CLEAN AND DRY

mark poulson
Posts: 8703
Joined: Sun May 08, 2005 4:16 am
Location: Oakley, Ca.

Re: 997 losing bottom

Postby mark poulson » Wed Mar 23, 2016 8:41 am

scottsweet wrote:Hi Mark,

Give me a call and maybe we can figure it out.


Scott, I only have your old (818) number.
PM me with your current number.
Attitude plus effort equal success

CLEAN AND DRY

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scottsweet
Posts: 935
Joined: Mon Aug 22, 2005 11:52 pm
Location: Campbell, CA

Re: 997 losing bottom

Postby scottsweet » Sun Apr 03, 2016 8:43 pm

Same number...8184483366.

Sorry for the delay...missed this.
Scott Sweet

www.rangerboats.com
www.mercurymarine.com
www.humminbird.com
www.minnkotamotors.com
www.lews.com
www.odysseyfactory.com
www.dobynsrods.com
www.simmsfishing.com
www.peregrine250.com/
www.californiabass.org

mark poulson
Posts: 8703
Joined: Sun May 08, 2005 4:16 am
Location: Oakley, Ca.

Re: 997 losing bottom

Postby mark poulson » Mon Apr 04, 2016 11:09 am

Thanks. I actually think I got it solved. I siliconed the transducer on the transom so it can't vibrate, and that seems to have solved it.
Attitude plus effort equal success

CLEAN AND DRY


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