Failure to Idle after Jumpstart

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Sep 8, 2010 | 07:31 AM

#11

Jags93

Road Master

Joined: May 2009

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From: Stamford, CT

It has to be the battery. I had the same problem/sypmtoms with a van. Changing the battery was all I needed to do.

Sep 8, 2010 | 07:52 AM

#12

shortride

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Joined: Jun 2009

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From: 46th State, USA

It's a guess at this point but if you jump started it with a car or truck battery you could have burned up a sensor. As already mention, running the engine after a jump start will not completely charge a battery.

With what little bit of charge you got out of the jump start, the headlight and other accessories will keep the battery discharged and may not allow the sensors to work properly.

The sensors and electrical system is designed to only handle a certain amount of amperage.

Last edited by shortride; Sep 8, 2010 at 07:55 AM.

Sep 8, 2010 | 07:56 AM

#13

roadking2000

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Joined: Aug 2010

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If you jump started it from a car, I hope the car was not running or else you probably totalled your bike battery and probably the bikes charging system because of the amperage difference.

Sep 8, 2010 | 07:06 PM

#14

Bad Pig

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From: Louisville, KY

Quote:

Originally Posted by BBStacker

Just a guess on my behalf. It would seem like all vehicles that have a computer when the power is lost for an extended period of time it has to relearn what was lost. Did that make sense? I don't think just riding around the block would do it. Probably need "x" amount of time with normal driving to re-establish itself. Sorry I couldn't be more helpful.

wasn't trying to "reset" it by riding it....just trying to charge the battery back. I wasn't home when this happened. thats why I had to jump the bike. no access to a charger to do it properly.

Sep 8, 2010 | 07:10 PM

#15

Bad Pig

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From: Louisville, KY

Quote:

Originally Posted by 07FLHT

My wrench has told me "NEVER, EVER jump start a late model bike" Battery Tender, your battery's best friend. just sayin'

Oh I know.....but I was in a hurry and I wasn't home or I would have.

Sep 8, 2010 | 07:13 PM

#16

Bad Pig

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From: Louisville, KY

Quote:

Originally Posted by oldhippie

Is that the original battery?

It doesn't sound like it has enough power at low rpm.

You might need a new battery even though it is starting the bike at low rpm it may not have enough energy density left (charge) to keep it running properly.

its practically a brand new battery, bought it a couple months ago, and its a H-D battery from the dealer. It drained because I left the damn LEDs on...

Mar 19, 2016 | 08:07 AM

#17

Maddog511

Stage I

Joined: Mar 2016

Posts: 1

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From: Wisconsin

What was the issue?

I have the same issue after jump starting my 2002 Electra Glide Classic. It ran fine when I put it away in my heated basement for the winter. This spring I went to fire it up and the battery was dead. I jumped the battery with the wife's Jeep now it won't idle and runs like s***. My very trusted mechanic looked at it and can't find the cause of the problem. He said I'll have to take it to the HD dealership so they can hook it up to the computer to find the issue. It throws no check engine lights. It has a Thundermax ECM tuner and is fuel injected. Just wondering what your outcome was??? I'm very hesitant to take it to a HD dealership but probably have no choice now.

Mar 19, 2016 | 08:19 AM

#18

Jw123

Stage IV

Joined: Jun 2015

Posts: 4

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From: Buffalo

The Thundermax has an "Initialization Process" that has to be redone if you disconnect the battery or remove the maxi. The process is in the manual, very easy.