 Battery Vampire, My generator light stays on after I turn the engine off and remove the key |
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| Deusexmachina77 |
 Aug 22 2023, 06:31 AM
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Member  Group: Members Posts: 93 Joined: 30-March 22 From: Chicago Member No.: 26,426 Region Association: Upper MidWest 
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I just had my engine rebuilt.
Drove the car once for 40 miles, and it was fine. The next drive was at night with all my lights working. The following day I try to start the car, and the battery was dead. I noticed a faint light from the generator's idiot light bulb. At first, I thought it might be a sun reflection. I removed the cables and charged the battery. I started the car, idled nicely, cleared the ground cable, and it died immediately. I have a new voltage regulator installed as part of the rebuild. I do not know my next step. How do I diagnose what is back-feeding the idiot light? I need a step-by-step guide for idiots. p.s. I checked the bulb to ensure it was a 12V, not an LED installed by the PO.  |
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Posts in this topic
Deusexmachina77 Battery Vampire Aug 22 2023, 06:31 AM
davep My guess is a bad diode in the alternator. Aug 22 2023, 07:23 AM
dr914@autoatlanta.com
My guess is a bad diode in the alternator.
agr... Aug 26 2023, 09:32 AM rfinegan Un plug the 3 wire alternator connector. If the li... Aug 22 2023, 07:26 AM kerensky Speaking of bad alternator diodes, it used to be c... Aug 22 2023, 03:41 PM Deusexmachina77
Speaking of bad alternator diodes, it used to be ... Aug 24 2023, 05:45 PM GregAmy Remember, the GEN light is just a voltage differen... Aug 24 2023, 06:29 PM Deusexmachina77
Remember, the GEN light is just a voltage differe... Aug 26 2023, 09:25 AM GregAmy Here's a decent article on how to troubleshoot... Aug 26 2023, 11:54 AM euro911 I have a half dozen good stock (T4) 45A alternator... Aug 26 2023, 02:26 PM  |
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