Alternator getting hot

Discussion in 'Sparky's corner' started by CJay, Apr 29, 2019.

  1. CJay

    CJay Supercar owner Staff Member

    So I took the convertible for its first test drive. I put a new alternator in it from Advance. Alternator was getting hot. Too hot to touch. And there is an electrical burning smell and some smoke. Pretty sure the alternator is toast...literally:D:D:D.

    I have to tell them, thanks for the barbeque but I already have one.:p At idle is was charging at around 13.35. So it was working. My question is what would make the alternator get hot besides just being a bad alternator? I just want to make sure I don't cook another one!
     
  2. mrolds69

    mrolds69 "The Cure"

    Anger...an angry car will do that. Angry because it's owner only wants to fix it to get rid of it.
     
    Houmark likes this.
  3. CJay

    CJay Supercar owner Staff Member

    Its like dating a psycho girlfriend....
     
  4. gsfred

    gsfred Founders Club Member

    It wants to cuddle up to that purple barney panty dropper.
     
    Bill Nuttle likes this.
  5. CJay

    CJay Supercar owner Staff Member

    Oh man...you too Fred?? :D:D
     
  6. gsfred

    gsfred Founders Club Member

    YUP, Like shooting fish in a barrel. Can't resist.
     
    Ryans-GSX and mrolds69 like this.
  7. TORQUED455

    TORQUED455 Well-Known Member

    Internally regulated or original-style external regulator on the firewall? The battery voltage doesn’t tell you a whole lot without knowing the amps.
     
  8. Smartin

    Smartin antiqueautomotiveservice.com Staff Member

    I cooked two alternators from auto zone before I bought a brand new one in the 67 Electra I painted last Summer.
     
  9. CJay

    CJay Supercar owner Staff Member

    External regulator. I was too lazy to get my current clamp out. :rolleyes:
     
  10. dan zepnick

    dan zepnick Well-Known Member

    Dry,tight bearings are my guess. Was the regulator got too?
     
  11. TORQUED455

    TORQUED455 Well-Known Member

    You really should check the amps too, and not just at idle.
     
  12. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    13.35 is low voltage, it should be 13.8 volts MINIMUM. Take it back and get another one.
     
  13. CJay

    CJay Supercar owner Staff Member

    Yeah, I realize that. Wasn't too concerned about the low charging. Just wanted to make sure I wasn't seeing battery voltage. I was more concerned about the fried electrical smell and the smoke. Smelled like when a florescent ballast goes bad.
     
  14. 1970 STAGE 1

    1970 STAGE 1 Well-Known Member

    Check your engine to body ground strap. Does the smell resemble chicken ?
     
  15. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    Yeah, I googled "alternator getting hot". This guy says diodes,



    https://auto.howstuffworks.com/unde...s/mechanical/5-signs-alternator-problems8.htm
     
  16. pbr400

    pbr400 68GS400

    Just have it towed to the shop and have them call you when it’s fixed. Didn’t you trade in your tools when you bought Barney? (Just kidding!I know you kept a few for license plate swaps, opening the Armor-All multipacks, etc.)
    Patrick
     
  17. CJay

    CJay Supercar owner Staff Member

    LOL!! That was funny! :D:D:D

    Got the new alternator today from Advance. Threw it in and started it. Running cool now and no GEN light. Didn't check anything else and closed the hood!

    Still need to get the new master cylinder. And the trans is shifting too quickly from a light. the 1-2 shift and the 2-3 shift are right on top of one another. Im going to try and adjust the modulator tomorrow and cross that off the list. I drove it around today. Nice to be in a convertible again.
     
    Darron72Skylark likes this.
  18. BUICKRAT

    BUICKRAT Got any treats?

    It's shifting too quick 'cause yer not steppin' on it hard enough!
     
  19. BUICKRAT

    BUICKRAT Got any treats?

    PS, what did you expect from an advance alternator. Some poor old cross eyed chink built it for you. Anything could be wrong inside.

    Diode is my guess.
     
  20. CJay

    CJay Supercar owner Staff Member

    They really need to talk to that 12 year old Chinese girl at the factory.

    Funny- I put a new tank in it and went against my better judgment and reused the old sender. Naturally, I put it all back together and the gas gauge goes right past full:rolleyes:. I thought for sure the old sender went bad because I touched it. In running down the short in the directional, the gas gauge started working. I must of fixed a bad connection behind the dash in fixing it. I'll take the small win. Anytime I don't have to drop a tank on my back is a good day.
     
    Brett Slater and Smartin like this.

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