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Possible bad voltage regulator?

Discussion in 'Early CJ5 and CJ6 Tech' started by 68BuickV6, Dec 11, 2012.

  1. Dec 11, 2012
    68BuickV6

    68BuickV6 Well-Known Member

    Chino, CA.
    Joined:
    Mar 12, 2012
    Messages:
    2,016
    Hey All,

    I've got an issue with my Jeep, it won't start.

    Prior to this, I was hearing what I can only describe as a loud, fast, ticking noise from what I assume to be the voltage regulator (external on the fender). The noise starts when the key is at 1/2 a turn, stops when the starter cranks, and resumes after starting. I had to drive a few miles with that noise, parked it in the garage, and forgot.
    I had to replace the starter solenoid, so I rolled it out (without starting) and changed it.

    Went to put it back and I have the same noise as before, but no starting.

    Could this be a voltage regulator issue?

    I could post a video if that helps at all.
     
  2. Dec 12, 2012
    68BuickV6

    68BuickV6 Well-Known Member

    Chino, CA.
    Joined:
    Mar 12, 2012
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    2,016
    Ok, got it to start, but the strange ticking noise is gone.

    It also stalled out but it's pretty cool out and I still haven't fixed the choke, so it was running cold.
     
  3. Dec 12, 2012
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2020 Sponsor 2019 Sponsor

    cordele, Ga.
    Joined:
    Mar 29, 2007
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    5,462
    Unless it has been downgraded, your 68 should have an alternator with built in regulator or alternator with fender mounted (external) regulator. Either regulator will be solid state and would not be able to make any clicking noises. There is always exceptions to the rule and someone could have installed a Mopar mechanical regulator. A picture of your starting and charging systems would be of great help.
     
  4. Dec 12, 2012
    duffer

    duffer Rodent Power 2019 Sponsor

    Bozeman, MT
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    My experience with clicking solenoids is usually the battery voltage is low or there is a bad battery connection. A 68 came stock with the Motorola alternator with the external regulator and neither will be making that noise.
     
  5. Dec 12, 2012
    PeteL

    PeteL Member 2020 Sponsor 2019 Sponsor

    Hills of NH
    Joined:
    Aug 3, 2003
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    6,696
    Sounds more like an electric fuel pump.
     
  6. Dec 12, 2012
    68BuickV6

    68BuickV6 Well-Known Member

    Chino, CA.
    Joined:
    Mar 12, 2012
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    Well, the battery is charged, that much I know.
    The connection appeared good on both end when I changed the solenoid.

    I don't have one? It's mechanical unless they hid that thing real well.

    Pics coming later today.
     
  7. Dec 12, 2012
    duffer

    duffer Rodent Power 2019 Sponsor

    Bozeman, MT
    Joined:
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    If you have a volt or multi meter, check the voltage at both the soleniod (switch terminal) and at the starter battery cable connection. Soleniod will only have voltage when the ign switch is in start position. Have someone else hit the start while you watch. If it goes below 12V, there is either a cable problem or the battery is bad. If you do have 12V or above, jump across the solenoid switch terminal to the starter battery connection-if that starts it, the problem is in the wiring or ign switch. If it doesn't, get another soleniod. New doesn't necessarily mean its ok.
     
  8. Dec 12, 2012
    68BuickV6

    68BuickV6 Well-Known Member

    Chino, CA.
    Joined:
    Mar 12, 2012
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    2,016
    I do have a meter. I'll give it a shot once I find it... :beer:
     

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