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 Post subject: Radio and shifting
PostPosted: Tue Jul 28, 2009 9:01 am 
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Joined: Tue Feb 27, 2007 8:58 pm
Posts: 216
Location: Winnipeg, MB
Hey Guys,

We were out this past weekend and I swear this is something completely new.

When cruising around, the readio works fine, but when shifting back to neutral from either forward or reverse it cuts out (Shuts off) for a split second. What could cause this as I swear this has never done this before.

Thanks!

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Rob
2007 Four Winns 180 Horizon


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 Post subject: Re: Radio and shifting
PostPosted: Tue Jul 28, 2009 12:25 pm 
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Joined: Mon Jun 25, 2007 11:00 pm
Posts: 384
Loose wire? That sounds weird.

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 Post subject: Re: Radio and shifting
PostPosted: Tue Jul 28, 2009 12:42 pm 
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230 Mike
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Location: Kansas City, Table Rock Lake
A momentary voltage drop resulting from the engine (and therefore the alternator) dropping RPM's? Just a guess, but if that's the case I have to wonder if something's up with your battery.

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 Post subject: Re: Radio and shifting
PostPosted: Tue Jul 28, 2009 12:55 pm 
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Joined: Thu May 18, 2006 12:31 pm
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Location: Chester, UK
Or maybe it's one of those loose "main power and ground" to the helm connectors like I found on mine! ( a 2 pole connector block, with a red/purple traced and a black cable)

Graham


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 Post subject: Re: Radio and shifting
PostPosted: Tue Jul 28, 2009 7:43 pm 
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Joined: Tue Feb 27, 2007 8:58 pm
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Location: Winnipeg, MB
230 Mike wrote:
A momentary voltage drop resulting from the engine (and therefore the alternator) dropping RPM's? Just a guess, but if that's the case I have to wonder if something's up with your battery.

Definately not the battery. Just replaced the POS that the stealer installed in the boat. Got a good one now. If you drop from WOT to low RPM still in gear, no issue. Only when shifting out of gear do you see the problem.

As for the loose wires, gave it a quice once over and didn't see anything. I'll check again tomorrow.

Any other thoughts?

Thanks!

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 Post subject: Re: Radio and shifting
PostPosted: Wed Jul 29, 2009 9:46 am 
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Joined: Fri May 19, 2006 3:50 pm
Posts: 2444
Location: Boat in Annapolis, live in Bethesda, MD
Get an analog gauge voltmeter and hook it up to the radio's 12v source. Then watch to see if the needle dips during the transition. Some digital meters are 'slow enough' to let you detect a dip in voltage, but nothing shows it quite as well as the old-school analog types.

Also, is this happening when the volume is cranked way up? It could be a matter of the amp cutting out. Again likely due to voltage fluctuation. You'd check that at the amp's power connection.

Any time there's electrical 'voodoo' it's always good to check the power at TWO places. Check it at the device that's having problems (right at the device, not a breaker) and then again at the battery supplying the device. If you see a different voltage between the device and the battery then you either have bad wiring or wiring that's too small for the amount of power being pulled through it. When you have high-drain devices they have to use appropriately sized wire. If it's not large enough then the voltage will drop too much when the device really starts pulling a load. And remember it's both the positive AND the negative leads that have to be properly sized.

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 Post subject: Re: Radio and shifting
PostPosted: Wed Jul 29, 2009 5:29 pm 
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Joined: Tue Feb 27, 2007 8:58 pm
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Location: Winnipeg, MB
We'll have a look at voltages. I'm guessing that it is a voltage drop at the head unit. Bone stock Fourwinns setup with a Clarion head unit.Just seems odd that it appeared out of the blue... :?

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 Post subject: Re: Radio and shifting
PostPosted: Wed Jul 29, 2009 8:09 pm 
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Location: Metro Detroit
Does your boat have a shift cut off switch. I know on the older OMC boats there is a switch that shuts the engine down for a second to allow the clutches in the outdrive to change directions, perhaps your stereo is somehow wired in line with something like this???

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