98 CRV unstable voltage

Discussion in 'CR-V' started by Michael, Mar 28, 2010.

  1. Michael

    Michael Guest

    The voltage on my Honda has been jumping back and forth between 11 and
    14 volts. This does not happen smoothly. It jumps instantaneously. This
    goes on at about a 5 second period.

    My battery does not run down and it always starts. I had the generator
    replaced a year ago, but this did not fix it.

    I wonder if anyone has any thoughts about this?

    Michael, Mar 28, 2010
  2. Michael

    Tegger Guest

    Does the "D" or "D4" gear indicator dim when accelerating? Do the dash
    lights or the headlights flicker?

    Is the Check Engine light on?
    Tegger, Mar 29, 2010
  3. Michael

    Michael Guest

    There is no check engine light on. The headlights and all other lights
    dim and get bright each time this voltage fluctuation occurs. This is
    not related to accelerating, at least not much. The voltage is more
    likely to drop suddenly when I take my foot off the gas. It appears that
    lower engine rpm is more likely to produce higher voltages.

    Michael, Mar 30, 2010
  4. Michael

    Tegger Guest

    It's the Electrical Load Detector (ELD). Common fail point.

    The ELD is either under the engine-bay fuse box, or is a plug-in module
    inside of it. If it's under the fuse box, it's part of the fuse box and the
    whole box needs to be replaced. If it's a plug-in, just buy a new one at
    the dealer and swap them.
    Tegger, Mar 30, 2010
  5. Michael

    Michael Guest

    Thank you very much for that information Tegger. You have been very


    Michael, Mar 31, 2010
  6. Michael

    Tegger Guest

    "Trying to find this part"? What does THAT mean? Techline doesn't know?

    I think your car is old enough that the ELD is part of the fuse box, but
    Techline should be able to confirm that to your dealership's tech.

    That fuse box, new, is $200. Yikes! Get thee hence to a wreckers!

    This is a non-binary group, so you shouldn't be posting images here. Use
    one of the many free image-hosting Websites to post your images, then post
    the URL here.
    Tegger, Apr 1, 2010
  7. Michael

    Michael Guest

    I called a Honda dealership in a town about 40 miles away. They had
    never heard of an ELD. They could not even figure out what to do with
    the picture I sent them. They sent it to Honda. Honda refused to sell
    the ELD. They will only sell the fuse box for 233 bucks. I have wrecking
    yard within 100 miles.

    At that price however, it might be worth it to drive the 100 miles if
    they actually have that fuse box.

    Michael, Apr 2, 2010
  8. Michael

    Tegger Guest

    That's because American Honda can only sell what the Honda home office in
    Japan sells them. And the Honda home office only sells the ELD as part of
    the fuse box for your year.

    Have you tried NAPA or other aftermarket place? They may sell a separate

    Call first. Then bring tools so that you can install the box on-the-spot.
    That way if it doesn't work, you can try another one from another wrecked
    CR-V, or get your money back then and there.

    I do believe the ELD is the same for the Civic, and I'm sure there's a way
    of transferring the ELD from one box to another, but I've never tried that.
    Time for some creativity on your part!
    Tegger, Apr 2, 2010
  9. Michael

    Michael Guest

    Thanks Tegger,

    I am working on it. There is a chain autoparts in town. They informed me
    that they could not get the part.

    I will try to get creative. If I knew what was in that brown little box,
    I could probably make one. I am a retired electronics engineer. I just
    don't know what it is. If someone had ever made a schematic of what was
    inside it, I would simply make one. But I sincerely doubt anyone has
    ever done that.

    Thanks again

    Michael, Apr 5, 2010
  10. Michael

    Michael Guest


    I hate to admit it, but I think my problem was just me. I started
    looking at the fuse box and how all the loads for the car went through
    the ELD. I had some driving lights hooked directly to the battery with a
    relay to turn them on.

    I removed the extra wires from the battery. I hooked them up inside the
    fuse box on the load side of the ELD. The varying voltage went away.

    My bad,

    Michael, Apr 7, 2010
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