Battery problem?
Thread Starter
|
Advanced
Joined: Oct 2011
Posts: 93
Likes: 0
From: MS
Here is what I have found out to today. I charged the battery with car charger, it was at 95%. Connected my digital meter to the bike, it read 12.35 volts give or take, meter jumps around. Turn switch on, voltage jumps up to 12.7. Crank it over, meter goes down to 10 something volts, happens fast meter is flashing numbers quick. It is cranking over kind of slow. When it is running it is charging in the low 14s. It is 55 outside, got down to 35 last night. After the bike cranks the first time it will fire up fine till it sets for awhile and cools off. All connections are good and tight.
Grand HDF Member
Joined: May 2008
Posts: 4,585
Likes: 673
From: Rolla
The fact that it drops to the 10 volt range when trying to crank explains why it is turning over very slow.
Thread Starter
|
Advanced
Joined: Oct 2011
Posts: 93
Likes: 0
From: MS
Thanks, I will check that.
Thread Starter
|
Advanced
Joined: Oct 2011
Posts: 93
Likes: 0
From: MS
Originally Posted by mechanicalman 
You might want to make sure that your compression releases are enabled. My son had his tuned at a local dealer and they left his ACR turned off in his tune.
Thanks, I will check that.
Well that can't be the problem, pcv does not control the acr.
I will get the battery load tested Monday. Thanks everybody.
You might want to make sure that your compression releases are enabled. My son had his tuned at a local dealer and they left his ACR turned off in his tune.
Thanks, I will check that.
Well that can't be the problem, pcv does not control the acr.
I will get the battery load tested Monday. Thanks everybody.
Outstanding HDF Member
Joined: Nov 2008
Posts: 2,034
Likes: 127
I have a 2012 road king. I have done a few upgrades on it. Jackpot slipons, pvc5, decatted head pipe. It has always cranked kind of slow. Meaning it would turn over a few times before it would crank. The only other bike I have is an 87 evo that when u hit the starter it will whine if it is on compression and then bang it is running. I keep the rk on a trickle charger all the time when not riding. It was about 45 when I started it up this morning. It grunted pretty hard but fired up. Went to a buddies house and when I cranked her up it just about didn't wind over fast enough to fire up? Two year old battery, checked the connections, all good. I think it would have cranked right up after staying on a trickle charger? Any thing else I need to check besides the battery?
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Cruiser
Joined: Apr 2012
Posts: 154
Likes: 2
From: Denver Co.
True but the ECM does control the ACR, if it isn't running a factory tune it still could be on or off.
Road Warrior
Joined: Oct 2008
Posts: 1,692
Likes: 22
From: Denham Springs, La
My original battery lasted 4 years. It's replacement lasted 2 years. Same symptoms as you on both of them. The first one left me stranded when it crapped out completely. I didn't wait for the second one to let me down. I replaced it 3 days ago. $100 bucks every couple of years or so is OK with me as long as I don't get stranded.