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Strange Issue 2012 Wide Glide

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Old Aug 16, 2017 | 02:09 PM
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Default Strange Issue 2012 Wide Glide

This last week i've had a strange issue with my Dyna, first it seem to be a brief loss of power and a sudden kick back in, but more recently now its almost as if the throttle isnt returning to posistion because the revs are unusually high even with the clutch pulled in, until i come to a complete stop then the revs level back to normal. As the ride progresses it seems to sort itself out, but its still a scary prospect knowing it can happen anytime.

Some things i've tried;
- checking the battery terminals
- updating FP3 firmware and flashing from my Auto-Tune map back to a Vance and Hines map.

NOTE: The battery is only a couple months old and has been fine, though i did experience a power loss in the past that was seemingly due to a loose negative battery terminal. Not the case this time!


Harley Wide Glide 2012
- Joker Machine air filter
- Remus slip-ons
- Vance & Hines FP3 fuel tuner



The only thing i've done differently in the last week that i can think is that i used some Motul fuel cleaner when i filled up.


Any suggestions?

EDIT, ISSSUE SOLVED:
Ok, so it looks like i've solved the problem... y'all are probably gonna laugh at what a rookie moment this is. The negative battery terminal seemed to be the culprit all along.

I had previously checked the cable before and it was fine, but decided to have another look at the battery today, and the metal plate screwed down on top of the battery was slightly loose (never noticed before) but the cable screw itself was nice and snug. So i whipped the battery out, tightened the plate down, i noticed the voltage reading on FP3 shoot up by .6 Took her for a test ride through a few speed ranges and not a single hitch!
 

Last edited by Geriden; Aug 20, 2017 at 06:24 AM. Reason: Issue Solved
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Old Aug 16, 2017 | 02:46 PM
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There's the troubleshooter below.

But, maybe the throttle body is filthy behind the air cleaner. Lubricate you cables maybe.

My sporter started doing that and it turn out that my cables were ready to go. Lube helped but the idle cable eventually snapped.


 

Last edited by cvaria; Aug 16, 2017 at 02:48 PM.
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Old Aug 16, 2017 | 03:06 PM
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Thanks for the troubleshoot reference. I've just ordered some new spark plugs (since I've only had the bike since April and don't know when they were last changed) I haven't actually inspected the plugs, but getting a new pair on there isn't going to hurt!

I'll give the cables a blast of wd40 and hope for the best in the mean time..
 
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Old Aug 16, 2017 | 04:12 PM
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Ordered spark plugs?

heres a link to a xref sheet so you can get some local plugs to test.

https://www.hdforums.com/forum/attac...arkplug-1-.doc
 
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Old Aug 16, 2017 | 04:29 PM
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http://www.ebay.co.uk/itm/PAIR-OF-DR...%257Ciid%253A1

These are the plugs I ordered if it makes any difference.
 

Last edited by Geriden; Aug 17, 2017 at 04:49 AM.
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Old Aug 16, 2017 | 05:19 PM
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Originally Posted by Geriden
http://m.ebay.co.uk/itm/PAIR-OF-DRAG-SPECIALTIES-SPARK-PLUGS-FOR-HARLEY-DAVIDSON-SPORTSTER-AND-TWIN-CAM-/401186801656?epid=1784323032&hash=item5d6898c7f8%3 Ag%3AdnsAAOSw9IpX1ck3&_trkparms=pageci%253Ab90f3bf 9-82c9-11e7-bc7f-74dbd1801de2%257Cparentrq%253Aecf1ce4515d0aa411d41 72bafffa79ad%257Ciid%253A1

These are the plugs I ordered if it makes any difference.
Nobody is going to type all that.
 
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Old Aug 16, 2017 | 06:04 PM
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most wont even cut and paste it... i know I wont.
 
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Old Aug 16, 2017 | 07:13 PM
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These are what is in the uk ebay link above:
https://www.denniskirk.com/dk/produc.../21030196a.jpg




your local auto parts store should have one of the plugs listed on the cross reference sheet above... look at thev 6R12 row.
 
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Old Aug 16, 2017 | 09:10 PM
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Don't clean your cables with WD40, it will only attract dirt and make things worse. Use Dri-Slide or something like that.
If the throttle is not returning to the closed position the grip may be too tight against the switch controls. Try moving it out a tiny bit.
If it's not a cable or mechanical problem you should try cleaning your IAC. And not with WD40, it's not a miracle product, just a water dispersant. Use throttle body or MAF cleaner.
 
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Old Aug 17, 2017 | 03:35 AM
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Originally Posted by nevil
Don't clean your cables with WD40, it will only attract dirt and make things worse. Use Dri-Slide or something like that.
If the throttle is not returning to the closed position the grip may be too tight against the switch controls. Try moving it out a tiny bit.
If it's not a cable or mechanical problem you should try cleaning your IAC. And not with WD40, it's not a miracle product, just a water dispersant. Use throttle body or MAF cleaner.

The throttle is returning to the closed posisition no problems, i'll give the IAC cleaning a go - that sounds like a promising idea, is there any particular product(s) you'd reccomend for that?
 
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