2008 AC 700efi h1 overcharging battery - ArcticChat.com - Arctic Cat Forum
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post #1 of 8 Old 05-11-2019, 11:07 PM Thread Starter
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2008 AC 700efi h1 overcharging battery

Hello to all so I've been stumped on this for awhile now I removed the fenders and went through the wire harness and found a few spots that had rubbed wires bare. I fixed the wires and then put another regulator and new battery in it along with a spare ecu I have and it smoked another regulator. I just got another oem regulator today and its still overcharging has anyone else had theses issues and found the problem. I'd sure like to figure it out any ideas.. . Thanks everyone
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post #2 of 8 Old 05-12-2019, 11:21 AM
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Just from posted info, it “sounds to me” as if the wire (from regulator to ground (meant to bleed off excess voltage and keep limit intact) isn’t making contact somewhere along the way (smoking the regulator/rectifiers.

I’d start by BACK TRACING the auxiliary ground wiring to rec/reg harness connector, looking for an opening (not grounding to frame properly), because that sure what it sounds like is happening.

Who, me?! Don't listen to me.... (I don't know anything, evidently...)

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post #3 of 8 Old 05-12-2019, 11:40 AM
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Go to your reg/rec connector block, check this black wire (highlighted in red circled) for a good connection between frame and the pin (or socket?) in the connector block itself.

If you’re not getting a good connection (1-2 ohms maximum), this could well be your issue. Don’t mistake a solid feeling wire as gospel, moisture over time can and will infiltrate the harness, making for high resistance corrosion of the internal copper wiring.
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Who, me?! Don't listen to me.... (I don't know anything, evidently...)

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If it's cnote approved it will work good
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Originally Posted by DonoBBD View Post
That is freeking sick man........
Don
0637-185: '99 Sno-Pro APV (guide and button) update kit p/n...
0637-186: '99 Sno-Pro APV superseded valve inserts update kit p/n...
https://www.arcticchat.com/forum/z-z...tml?highlight=

http://www.randakksblog.com/more-on-...fear-the-corn/

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post #4 of 8 Old 05-12-2019, 06:33 PM Thread Starter
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Thank you C-note I will definitely check it out thos thing has ben driving me crazy.
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post #5 of 8 Old Today, 07:50 AM Thread Starter
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Update finally figured it out it was the fan diod. Thanks C-note for your input. The fan diode RAL 254 "diode symbol" 704 on my 2008 AC 700 efi 4x4 h1 se my next question is where can I buy a new one and ifi could get a model or part number. The only info I seem to be able to find is up to a 205 AC 650.
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post #6 of 8 Old Today, 08:35 AM Thread Starter
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* 2005 650 h1
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post #7 of 8 Old Today, 09:43 AM
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ATV: XTZ V2 550H1 50
That 650 diode would be fine, is my assumption.

I went to Radio Shack years ago and got a diode and used it because I had a ride and couldn't wait for shipping from the dealer. It's still on my atv. That's a least 6 years ago and 1500 miles.

xtz,v2,550h1,50
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post #8 of 8 Old Today, 01:01 PM
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Update finally figured it out it was the fan diod. Thanks C-note for your input. The fan diode RAL 254 "diode symbol" 704 on my 2008 AC 700 efi 4x4 h1 se my next question is where can I buy a new one and ifi could get a model or part number. The only info I seem to be able to find is up to a 205 AC 650.
That diode only protects the fan from receiving too much voltage, and/or receiving voltage if polarity is reversed. If that’s bad, the fan will not receive its “ground” when needed, not any polarity changes due to accidental reversing of power leads anywhere.

Chances are, that something else caused your overcharging, and took out that diode in the process. Have you ever jump started unit, maybe using “Boost” setting on a charger? That could possibly cause this.

Or possible reversal of polarity (by accident of course, as mentioned 2 paragraphs above), as that will smoke diodes as well.

Below is wiring schematic in full size, that diode (circles and tagged in red) is nowhere near the portion(s) of the ground circuit required to bleed off excess voltage when required. As long as that black harness lead is grounded good, that’s all that’s required for voltage bleeding during operation of unit.... 🤔
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Who, me?! Don't listen to me.... (I don't know anything, evidently...)

Quote:
If it's cnote approved it will work good
Quote:
Originally Posted by DonoBBD View Post
That is freeking sick man........
Don
0637-185: '99 Sno-Pro APV (guide and button) update kit p/n...
0637-186: '99 Sno-Pro APV superseded valve inserts update kit p/n...
https://www.arcticchat.com/forum/z-z...tml?highlight=

http://www.randakksblog.com/more-on-...fear-the-corn/

"Arctic Chat is not affiliated with Arctic Cat Inc. in any way, shape or form. We are an enthusiast site run by fans."

(Are you experiencing issues with your local dealer? Feel free to call Cat Consumer Complaint @ 218-681-8558)
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