Perplexing power issue/power drain

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  • E30nub1
    E30 Addict
    • Mar 2010
    • 402

    #1

    Perplexing power issue/power drain

    Also posting this here because it is m20 related and it's my daily so I kinda need her back on the road..

    Ok r3v yes I used the search feature... Yes I trouble shot and replaced part suggested .. So I'll go ahead and start from the beginning of about 2 months ago

    So I originally had a starter die on me about early February.. Took it to a shop and got it fixed promptly..but the battery subsequently also bit the dust.. Which was also expected...considering it was over 4 years and we had expirienced away colder than normal temps I bit the bullet and replaced it.

    So once I replaced both the starter and the battery (starter was done by a shop.) so one thing I instantly notice after the starter replacement is both my windows and fan for the vents work while the key is in the accessory position.. But once the car is started they both didn't work unless you jump the car off while moving
    (yes the car is a 5 speed) also peculiar is that both my main relay and fuel relay go out.....at the same time....this is where I begin to raise an eyebrow...but I figure since by relays had been in the car since 92 it was about that time..

    So after all relays battery starter were replaced tonight as I was driving home my lights dim..the abs light comes on.. So I pull over to check to see if m battery was disconnected ..battery was fine so I try to start it up and I get get the dreaded click.

    So I end up popping the clutch on a hill and take her home. My immediate thought was the alternator... But I remember reading how you can mess up the wiring to the starter and screw things up... And I have spent well over 400 bucks in the last month to try and remedy all issues...with no dice....As of now I have no idea wtf to do..any advice bc my electrical/wiring knowledge is little to none.
    Last edited by E30nub1; 04-01-2015, 07:50 PM. Reason: Misspelling
    sigpic"God made cars to be RWD and standard"
  • EatsHondas
    E30 Addict
    • Sep 2012
    • 404

    #2
    No offense my man, but this is why I'm extremely wary of other people/shops touching my car. If I were you, step one would be to go back to the shop and describe your issue while making sure to tell them that none of this happened prior to them replacing the starter.

    Let's say worst case scenario: the shop tells you to screw off. The next step for me would be to search how the starter and alternator are supposed to be connected and make sure your car matches.

    After that, get your car running and idling. Grab your multimeter (if you don't have one...), set it to "DC Volts" and touch the black lead to the negative terminal and the red lead to the positive. If you're not getting ~13.5-14.5 volts, your alternator is not charging the battery like it should be. From there you can safely assume your alternator is bad, is not hooked up correctly, or the fusible link (big ass fuse inside the battery cable) to the battery is blown.

    Post back with your progress!
    1989 325i Lachssilber Sedan
    5-Speed Swapped
    M30B35 Swapped
    MegaSquirt MS3X

    1987 325i Lachssilber Sedan
    260k OEM Automatic Daily Baby

    Comment

    • E30nub1
      E30 Addict
      • Mar 2010
      • 402

      #3
      I trust the man and the shop with my car/life and have for over 4 years I'm not in any way suggesting it was the shop at all I'm just curious what is tripping all the electrical Issues
      sigpic"God made cars to be RWD and standard"

      Comment

      • Andy.B
        E30 Mastermind
        • Sep 2011
        • 1650

        #4
        It sounds like there may be an issue with the wiring to the starter, or an issue with the unloader relay function of the starter itself. I second the suggestion to take it back to the shop that previously installed the starter, and let them know (in an informative, not accusing way) that this behavior began after the starter was replaced.

        A malfunctioning unloader relay can cause issues with the blower motor, windows, lights, etc.

        Comment

        • EatsHondas
          E30 Addict
          • Sep 2012
          • 404

          #5
          Ah. When you said "a shop," I thought you meant a random Jiffy Lube or equivalent.

          I still stand behind inspecting/testing the aforementioned components before opening your wallet again.
          1989 325i Lachssilber Sedan
          5-Speed Swapped
          M30B35 Swapped
          MegaSquirt MS3X

          1987 325i Lachssilber Sedan
          260k OEM Automatic Daily Baby

          Comment

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