Ignition/Tuner/ECM/Fuel Injection Need advice on ignition issues? Questions about a tuner? Have questions about a EFI calibration or Fuel Injection? Tips on Engine Diagnostics, how to get codes, and what they mean. Find your answers here.

Voltage drop while riding

Thread Tools
 
Search this Thread
 
Old Jun 16, 2007 | 09:28 AM
  #1  
willmill's Avatar
willmill
Thread Starter
|
Stage II
Joined: Jun 2007
Posts: 2
Likes: 0
From:
Default Voltage drop while riding

2003 FLHTPI

What would cause my volt meter to drop from 14 to 9 creating lost of power and sometimes backfire, then it goes back to 14 volts? This happens mostly when I'm riding for the first 30 minutes and around 2000-3000 rpm. It seems to go away after I ride for awhile. Each time this happens, it lasts for 5-10 seconds. Can anyone help?

Thanks,
Will Mill
 
Reply
Old Jun 16, 2007 | 09:36 AM
  #2  
Uncle Scrooge's Avatar
Uncle Scrooge
Road Warrior
Joined: Feb 2007
Posts: 1,785
Likes: 4
From: Oklahoma
Default RE: Voltage drop while riding

This is just a guess, but itmight bea temperature sensitive corroded electrical terminal. As your bike warms up, the change in temp might be "fixing" the connection until the next cooling-heating cycle. Good luck finding it.
 
Reply
Old Jun 16, 2007 | 09:50 AM
  #3  
willmill's Avatar
willmill
Thread Starter
|
Stage II
Joined: Jun 2007
Posts: 2
Likes: 0
From:
Default RE: Voltage drop while riding

Thanks! I just came back from a2500 mile trip from Wash. D.C. to Emporia, Kansas and back again in time for Rolling Thunder. My stock rear cylinder muffler turned blue. The bike must have got pretty hot to turn the muffler blue that for back. I was running 80-90 mph. Top speed is only 98.

I'll have to get a higher power magnifyingglasses to trace wires. It's hard for me to see this stuff.

Thanks again.

Will Mill
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
UltraR1d3r
Ignition/Tuner/ECM/Fuel Injection
21
Oct 3, 2023 05:33 AM
dukdog
Ignition/Tuner/ECM/Fuel Injection
1
Jul 30, 2013 11:10 AM
Ozglide
Touring Models
3
Jan 4, 2012 07:34 PM
EDZ82FXR
Ignition/Tuner/ECM/Fuel Injection
6
Jul 27, 2011 10:34 PM
viragoxxx37
Ignition/Tuner/ECM/Fuel Injection
2
Jun 5, 2008 06:31 PM




All times are GMT -5. The time now is 07:08 AM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE