 Alternator Circuit Weirdness ... |
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| SirAndy |
  Dec 22 2007, 05:41 PM
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Resident German  Group: Admin Posts: 41,815 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California  |
This one has me stumped (sp?) ...
3.6L '95 993 Engine with stock 993 alternator. stock 993 gauge with stock 993 alternator warning light. when i start the engine, the alternator light stays on until i spin the engine above 2500 rpm. (IMG:style_emoticons/default/WTF.gif) if i just let it idle, the alternator light will never turn off. i measured the current on the battery and confirmed that the alternator is *not* charging when the light in the gauge is on. now, here is where it get's really strange. once i rev the engine past 2500 rpm, the light goes off and *stays* off. (IMG:style_emoticons/default/screwy.gif) the alternator charges just fine after that, even when the engine dropps back to idle. it seems like the alternator needs a initial "jolt" to start working properly. anybody ever seen anything like this? (IMG:style_emoticons/default/idea.gif) Andy |
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| Bruce Allert |
Dec 22 2007, 06:38 PM
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Hellions asleep Group: Members Posts: 3,289 Joined: 19-March 03 From: Eagle Creek, Orygun Member No.: 441 Region Association: Pacific Northwest |
I've had several American cars that did exactly that. Rev it & the light goes out. (IMG:style_emoticons/default/confused24.gif) Nothing ever happened for the length of time I had the car.
........b |
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Posts in this topic
SirAndy Alternator Circuit Weirdness ... Dec 22 2007, 05:41 PM
Headrage Mines kinda similar. The light stays on under 3k ... Dec 22 2007, 06:01 PM clarkcou Had this problem in an older BMW (1975). Corrosio... Dec 22 2007, 06:04 PM SGB Could this be connected to the oil pressure weirdn... Dec 22 2007, 06:21 PM r_towle rtfm,
Do not run this engine under 2500 rpms or v... Dec 22 2007, 08:30 PM draperjojo Sounds like a problem in the voltage regulator cir... Dec 22 2007, 09:22 PM
Spoke First question: is this new behaviour or has it be... Dec 23 2007, 07:27 AM |
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