Electrical problem? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Electrical
Where does this wire go?
Includes Electrical mods, Lights, Stator,
Rectifier, Diagrams, etc

 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 05-30-2005, 10:00 AM Thread Starter
 
Join Date: May 2005
Posts: 4
iTrader: (0)
 
Electrical problem?

I believe my '02 VN750 has developed an electrical problem of some sort. The starter will not engage, although clicks will be heard from the relay. Also, at the last point I had it running it produced a backfire then sounded like it was running on one cylinder, during which point the tachometer reading varied dramatically (from around 1k to 7k) and it soon stalled. After this, I noticed that I would not get any lights on the indicator panel on occasion, particularly the oil or neutral light when it wasn't running and was in neutral.

I'd completed a ~80 mile ride in the early afternoon and the bike sat for about three hours. I was able to start it once, and the above-mentioned problems began shortly thereafter. Moisture is not an unreasonable possibility as we did have a light shower during the time it sat.

Anyone have any suggestions? Unfortunately, I can't just walk out to the bike as it is at my MIL's house. I'm working on securing a truck and trailer so I can get it home. I do have a new (installed in March) maintenance free battery in the bike and would keep it connected to a smart charger (BatteryTender Jr model) when parked at home.
DarphBobo is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 05-30-2005, 01:12 PM
Forum Faciliator
 
Red Baron's Avatar
 
Join Date: Jun 2004
Location: Binghamton, NY
Posts: 369
iTrader: (0)
 
Re: Electrical problem?

How is your battery? And check your fuses.

Start there then let us know.

Red Baron
Binghamton, NY
Alright Already, Lets Ride!!
Red Baron is offline  
post #3 of 7 (permalink) Old 05-31-2005, 12:12 PM Thread Starter
 
Join Date: May 2005
Posts: 4
iTrader: (0)
 
Re: Electrical problem?

Sorry it took so long to reply; it was after midnight when I returned last night.

Although I had visually inspected the fuses at the time, I decided to double-check when checking other possibilities. The fuses are good, and the battery appears good (gives 12.94V.)

I had my manual with me and looked through some diagnostics. Testing the starter relay with the starter lead detached produced the expected result (single click, 0 Ohm) but if the starter is connected it makes repeative clicks.
DarphBobo is offline  
 
post #4 of 7 (permalink) Old 06-09-2005, 09:54 PM Thread Starter
 
Join Date: May 2005
Posts: 4
iTrader: (0)
 
Re: Electrical problem?

After much time checking and trying, I've come to the following:

Battery was shot - gave the right voltage but couldn't even budge the starter. I put the old battery in again and it cranked. I installed a new, fully-charged battery and things look good electrically.

Stator looks good and is giving me the readings I should get, including infinite resistance between any lead and ground. I did a couple other things that were about due anyhow, like replaced the spark plugs, having checked that they had the correct gap.

It runs smoothly, but has *no* power under load - it's very easy to stall when attempting to move-off from a stop, hills I used to be able to take in fifth I can barely maintain speed if I downshift to second, etc. The acceleration in first feels more like being in fifth and slightly rolling the throttle.

Anyone have any suggestions what I should check next?
DarphBobo is offline  
post #5 of 7 (permalink) Old 04-18-2006, 10:55 PM
Members who have donated towards server costs
 
Join Date: Apr 2006
Posts: 100
iTrader: (0)
 
Trouble-shooting thought--

I had something like this happen to me on an old Kawasaki LTD500. Turned out the electronic ignition was bad.
If I'm not mistaken, the VN750 has the ignition exiter magnets in the same piece that provides the magnets for the alternator. If those magnets are weak, it might (emphasis *might*) be causing this.
vn750angky is offline  
post #6 of 7 (permalink) Old 04-19-2006, 01:38 AM
Uber Member
 
Join Date: Feb 2006
Location: Dallas, TX
Posts: 1,280
iTrader: (0)
 
Send a message via AIM to Hizzo3 Send a message via Yahoo to Hizzo3
have you checked to see if both cyls. are fireing? if not which isnt?

'04 Vn750
Currently Installed
nat'l cycle deflector shield
westco 12v30 MF, 30A/h w/ 350 CCA's w/ custom box
TOC stator cover w/ Frankenstator mod!
R/R relo

Soon to have (own or on order)
TOC ACCT's
Mez's 110-FRT 170/80-Rear
Custom rear fender and tail light
Givi hard bags w/ custom rear turn signals


Band Engineer/Webmaster for Josey Contreras Tejano Band
Hizzo3 is offline  
post #7 of 7 (permalink) Old 04-22-2006, 06:44 AM
 
Join Date: Sep 2004
Posts: 83
iTrader: (0)
 
Quote:
Originally Posted by DarphBobo
...but has *no* power under load - it's very easy to stall when attempting to move-off from a stop, hills I used to be able to take in fifth I can barely maintain speed if I downshift to second, etc. The acceleration in first feels more like being in fifth and slightly rolling the throttle...
Sounds like it's starving for fuel. Did you do anything to the tank or fuel lines while you were working on it? Maybe the tank's not getting vented. If you open the gas cap and get a "whoosh", your tank's not getting the air that it needs.

CD in Frederick, OK
Ol Poop is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Once registered, your User Name"cannot be changed". We can make exceptions within 7 days, but after that, it is set in stone.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome