Author Topic: Erratic Speed readings  (Read 3871 times)

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Offline Patty

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Erratic Speed readings
« on: August 31, 2012, 10:42:05 AM »
Hey guys, lately I have been noticing some erratic speed reading while at trolling speeds with my 898... It will read anywhere from .5mph-3mph and just flashing random numbers in between... I know my speed isn't fluctuating that much because I have I-pilot and its speed is staying consistent... I was thinking GPS puck placement as I have it mounted on the dash under my windshield on my Pro-V, but it just recently started doing this, worked good up until the last few outings... It also doesn't seem to effect my top speed readings very much if any, I see maybe the odd .2mph jump in either direction but that is probably just speed changes due to water conditions etc... Anybody else having this problem???


Offline Roddy

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Re: Erratic Speed readings
« Reply #1 on: August 31, 2012, 02:13:02 PM »
Patty, I see that the 6.180 update was your last update, If so try updating to the latest that has long file number 25+ letters.

If the update does not fix the problem swap out control heads.

Odds are the update will fix the problem. Humminbird Update 6.180 messed up a lot of units and the 25+ letter is the FIX.

Roddy
Scan,Scan and Rescan Roddy

Offline ITGEEK

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Re: Erratic Speed readings
« Reply #2 on: August 31, 2012, 04:42:12 PM »
Patty,
Did you change your boat configuration
before the erratic readings.
Add/remove/modify/replace anything?

It could be interference that's causing the erratic readings.

Offline Patty

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  • Software: 6.4??
Re: Erratic Speed readings
« Reply #3 on: August 31, 2012, 11:43:19 PM »
The only thing I've changed on the boat is the trolling motor... Its a 24V Minn Kota I-pilot... But its been on there for a while and only a couple days shorter than the 898 (new boat all rigging done in first week)... It was working fine then all of a sudden it started getting erratic... I thought it was the puck placement but I get good satellite reception (according to the bird)... Also I think that if it was interference between the trolling motor i would notice something with the I-pilot seems as how its entirely GPS based...

Offline ITGEEK

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Re: Erratic Speed readings
« Reply #4 on: September 01, 2012, 11:24:57 AM »
If you think it's GPS based, then you could try and
route the GPS puck wire as far away from the
transducer wire as possible.


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