Featured Electrical issues

Discussion in 'C3 Forum' started by cugardan, May 23, 2017.

  1. cugardan

    cugardan Active Member

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    thatsucks.jpg Hello,

    Just wondering if you all have any electrical issues you have come across with your C3 and to share the issue and solution if you have one.

    My current issue - Car was driven to a car show last September (72 BB) drove great no issues, went to leave, turned key "mrrp" nothing, tried again, same result. Next thing I know battery is dead. After countless attempts to boost it, the negative cable was getting pretty hot, so decided to tow it home.

    Assumed issue - bad ground. Have not had a chance yet this year to dig into it and car is now buried in the garage. Taking it out June 2nd to see if I can figure it out. Will update when I get it fixed, but this made me wonder what other issues people have had, and a search yielded little.

    Thanks!
     
  2. nascar03

    nascar03 High RPM Poster

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    I'm thinking that you had out in the rain!!

    Graham
     
  3. Black 03 Z06

    Black 03 Z06 High RPM Poster

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    I am wondering if it could be a bad battery. It is possible that a battery cannot actually take a boost if it is damaged internally.

    Have it tested before spending a significant amount of time looking for the problem.

    Good luck, electrical issues can be frustrating. Or Graham could be spot on, damn rain. :thumbs:
     
  4. cugardan

    cugardan Active Member

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    Yeah....when the car show ended a bunch of guys stuck around for 2 hours trying to help from the mustang club. then it POURED.
     
  5. Jeremiad

    Jeremiad Active Member

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    The hot cable would be an indication that it is a grounding issue. The heat that you feel is resistance, usually caused by the power not being able to flow properly to ground. It could be a dirty ground connection, or it could be just old cables with breaks and oxidation causing poor electrical flow.

    I had a similar problem in my Capri RS many years ago. It was December, so it was pretty cold. The car would start fine being dead cold, and when I got to town and parked it, it would not start again. Barely turned over. Wouldn't do anything different on a boost, either. I replaced the battery, still the same. Took it to a shop. They replaced the battery (again), and the problem remained. They replaced the starter, same thing. Alternator, same thing. starter relay (old Ford, separate from the starter), same deal. I was very frustrated with it as I had spent a lot of money with a shop and they couldn't figure out the problem. Sitting at Canadian Tire trying to figure it out after having the same problem after picking it up from the shop, I touched the positive cable from the battery to the solenoid and damn near burned myself. It was so hot that the plastic was sticking to my skin. ouch.

    The stock cables were a 6 or 8 gauge, just a silly little cable. I bought new 2 gauge cables and replaced battery to relay, relay to starter, and battery to ground. Bingo! Turned over so fast I thought the car might flip over on its roof!

    The cables are the cheapest thing to replace, and make sure you clean the terminals and ground point to ensure a good connection. I bet it solves your problem.
     
    turbozig, MikeysZ06 and Rruuff Day like this.
  6. cugardan

    cugardan Active Member

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    wanted to update....turns out it was the starter...again....that makes 4 AC Delco starters in 4 years. Anyone else have similar issues?
     
    Black 03 Z06 likes this.
  7. Black 03 Z06

    Black 03 Z06 High RPM Poster

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    That has to hurt the budget. Hopefully it is now sorted out and away you go.

    Thanks for the update.
     
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