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Blow job for my EHC

Discussion in 'Ignition / Electronics / Batteries' started by SKOGDOG, Mar 26, 2017.

  1. SKOGDOG

    SKOGDOG One of the old ones.

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    Th3 Infamous1 posted earlier that we had to use a hairdryer to get my bike started today and DentDude remarked about warming up the EHC. Obviously he has some experience with the issue. I am hoping DentDude will elaborate.
    I am interested to know what other Forum members know about this issue.
    My bike (2010 EFI Bulldog Bagger--bone stock) would not do anything when the key was turned. My radio had power, as did the power outlet (cigarette lighter), but absolutely nothing through the ignition.. We got a hair dryer and heated the electronics in front of the battery (modules, EHC, etc.), and suddenly the lights lit up and the bike started as usual and ran perfectly all day.
    For those who have any experience with this, what do I need to expect? Am I likely to make it home? Does it just do this forever, or will it suddenly fail, or does it progressively degrade, what usually happens?
    I appreciate your on-point observations and any experiences you've had.
     
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  2. bigkelk9

    bigkelk9 Well-Known Member

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    I don't know much about that, but I know by working on booms (manlifts) that a lot of these have board heaters on them.. something u might wanna look into, runs off a momentary toggle from straight power
     
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  3. cdogg556

    cdogg556 Guru

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    I have been told that if it's really cold out that warming it up might help, but on the other hand I've also heard that heating it up could cause it to fail, I would replace it and save yourself some unwanted pain.
     
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  4. dentdude36

    dentdude36 Guru

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    I personally don't have experience with it but was made aware of an issue with the original ehc that some we're susceptible to failing a cold test in which when below a certain temp the unit will not work until it is brought up to a warmer temp, these specific temperatures I'm not certain of, hopefuly this isn't the beginning of a complete ehc failure, I know that axles ehc works on fuel injected bike as well as carb but what I'm not sure of is if your harness connectors are the same as 2005-2008. Donna and Derek sell axles ehc they would know about the connectors or contact Axel directly and get the specifics, I hope this is helpful
     
    #4 dentdude36, Mar 26, 2017
    Last edited: Mar 26, 2017
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  5. BWG56

    BWG56 Guru

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    I was the one that had the cold start problem with my EHC, and told these guys about it as Cdoggy and Dentdude have stated above, weird as hell but baffled me until I sent it to Curtis to test it. Upon him doing the normal testing, he also threw it in the freezer and if the ehc gets under 55-60* there's a relay or circut that does not function until it is above 60*. The bad thing is there's nothing you can do to fix it unless you replace it. Of coarse you can carry a hair dryer with you to bring it up to temps when it doesn't start, but your better off getting it outta there and replacing it.
     
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  6. pknowles

    pknowles Getting better by the day...---... GURU
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    What decision/ symotons led you to the hair dryer.
    Did the bike get wet. Just curious. It's already crossed my mind to talk to doc about a spare esc.
     
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  7. BWG56

    BWG56 Guru

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    I can tell you from my personal experience, you turn the key and its completely dead, no lights no nothing period. I hooked the jump start to it and its still dead, no headlight no neutral light no nothing, dead.
    I pushed it in the garage and after an hour or 2, I walked out to it in the garage and turned the key, and all was a go, fired right up. Then it happened when it wasn't that cold also, everything was dead even with a jump start. What was my next step you ask? I ordered the ESC from DOC which was the recommended replacement from Andrew (Bigdogtech01) and that was all I needed to hear.
     
    #7 BWG56, Mar 26, 2017
    Last edited: Mar 26, 2017
  8. dentdude36

    dentdude36 Guru

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    Go wit axles simple install 2 year warranty and less cost
     
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  9. dentdude36

    dentdude36 Guru

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    :disappointed:
     
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  10. Jersey Big Mike

    Jersey Big Mike Active Member
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    You need to get ready to replace that EHC -- or ride only on hot days -- Both my K-9's failed in this method -- The first one when it did it on the road I actually used 1 gallon of HOT WATER poured over the electronics to get the bike to start. Replaced it right after that.
     
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  11. bikeone

    bikeone Active Member
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    Hi SKOGDOG,
    EHC 58 is mounted on carburated and EFI models between 2015 till early 2008.
    Dont´know what harness control is built in the newer dogs.
    Maybe a contact to Axel will be helpful for get more info.
    can send u contact dates if u need.
    In my case I thought EHC is my problem, end of the story was a defect right switchboard.
    Think he´s a good choice and a Question cost´s nothing.
     
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  12. BWG56

    BWG56 Guru

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    If the bike is dead and I mean dead, no lights or anything, its the EHC. You will still light up if its the hand control, won't start, but it will light up.
     
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  13. kickstart

    kickstart Well-Known Member
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    Look at the title of this thread and just think how long it lasts you. :)

    I went with DOC's because he is only a phone call away if you need any help, I'm not sure the other two are that available.
     
  14. BWG56

    BWG56 Guru

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    :agree: Some of us are not that knowledgeable and have not installed many of these units, that's why customer support is very important in my book along with easy to read instructions:old2:
     
    #14 BWG56, Mar 26, 2017
    Last edited: Mar 26, 2017
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  15. bdm7250

    bdm7250 Guru
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    :agree: Plus I ride in some cold weather, sometimes just above freezing point, never had an issue starting since I got DOC's ESC..
    :agree: Jeff was great to deal with he followed up with me to make sure everything went Aok...:old2:
     
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  16. dentdude36

    dentdude36 Guru

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    Axle gets back asap and has been top notch on replacing anything if any have had a problem I'm very happy with his ehc and he his confident enough to put 2 year warranty on it that means something in my opiinion
     
    #16 dentdude36, Mar 26, 2017
    Last edited: Mar 26, 2017
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  17. bdm7250

    bdm7250 Guru
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    Seems like I've heard that before from you.. :disappointed:
     
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  18. dentdude36

    dentdude36 Guru

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    :yesnod: And your gonna keep hearing it cuz axle really stepped up and did the big dog community a great service and gives a 2 YEAR WARRANTY in case ya forgot:eek: :D
     
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  19. cdogg556

    cdogg556 Guru

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    Docs unit has been flawless for over 6,000 miles now, not one issue, NEVER used a tender since the installation, don't know much about axels unit, but I can say from personal experience Doc's is bulletproof!
     
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  20. bdm7250

    bdm7250 Guru
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    It wasn't an option for me since I had the PDM.. But I do agree with ya on Axel helping out the BD community..:old2::old2:
     
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