Jump to content

charging system advise

Ron Benedict

Recommended Posts

I have a problem with the charging system on a 2007 commando. The panel indicator starts flashing at about 800 rpms and stops flashing around 3000 rpms. I have connected a battery meter to the battery and when the light is flashing the meter is showing around 16 volts .I suppose the indicator is trying to tell me that it is overcharging. At idle and above 3000 rpms the light goes off and the meter shows about 14.5 volts. I ordered and replaced the rectifier and it didn't help. I took the altinator off and had it tested and the results were that it was fine.I have tried running a ground wire from the battery to the engine block and that does't help either.I and all of my buddies are out of ideas. If anyone out there has any suggestions I would greatly appreciate hearing them. Thanks Ron

Link to comment
Share on other sites

can you post a photo of your alternator? I have rebuilt a couple of Joyner alternators and had no bad reviews. Try disconnecting the alternator output from the rest of the system, start your engine, check the voltage with no load, if zero, touch the alternator output lead to 12 volts for a moment and then check the voltage again, it needs some external power to get going. Sounds like your regulator is not regulating and going wide open.

Link to comment
Share on other sites

Thank you for your reply.As I said in my post I had the altinator checked by an altinator shop and they found nothing wrong with it. Late yesterday I pulled the battery out and replaced it. No flashing light and charging normal.I called my battery supplier and described the problem that I was having and asked if it was possible for a battery to cause such a problem. He said YES. He is going to bring his battery tester to my shop Monday and check it.Hopefully it is just something strange going on inside the battery because we have checked about everything else.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Similar Topics

    • By skittle021
      So I've got a Hisun 550 that I was doing some work on that required removing the CVT and it's housing. Upon attempting to reinstall the clutch, sheaves, etc, I found that the belt no longer fits - it's far too wide. None of the parts have been replaced, they're all OEM. Exactly the same parts as what I took off a few weeks ago.
      To be more specific, my belt is 1.25in wide, but the gap between the clutch and the primary sheave is only 7/8in wide. I'll include a few photos to explain.
      Has anyone ever experienced such a bizarre problem? Any help at all would be appreciated, I've been stuck on this for a month. I'm open to just about any suggestion.

    • By donny
      Hello I am new here but have had this machine for about 5 years. I am having issues with it surging and sometimes sounding like a small backfire thru the intake.  When putting in low, high or reverse it will struggle then go full power then struggle. It will only do the small backfire thing while in neutral reving it many times. Once in awhile it will throw a check engine light.  
      Parts replaced/checked:
        I have checked the valve lashing, timing and adjusted. Parts replaced are the coils, spark plugs, injectors, fuel lines, fuel pump, IAC sensor, TPS sensor, throttle cable, speed sensor, primary and secondary clutch and belt.
    • By Abermp
      I have a DesertCross 800 that doesn't want to stay in low, it pops out when I let off the gas. No problem with the other gears. What do I need to do?  Thanks.
    • By Gary Odom
      I bought a tracker 88sx crew in 2023. It has a whishing noise coming from the front end. Starts out low and gets louder as speed increases. Took it back to the dealer and they said it was normal on this model. Any suggestions as to what may be causing this.
    • By Moos
      I replaced the fuel pump, ended up with a couple bad ones. This last one now worked fine for about 150 miles, now only works when its cool outside. (30-40). As soon as we hit 55 degrees, It will not run. Barely starts, runs rough, will not move. Any ideas? Another bad pump? Something else going on? Any help would be appreciated. Thanks.
  • Create New...