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Lights dim >> car tries to stall... lights dim >> car tries to stall.

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Old 02-11-2008, 08:08 PM
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Default Lights dim >> car tries to stall... lights dim >> car tries to stall.

Another problem just surfaced, I'm not sure if it's the cold, but I need your opinions on this.

Yesterday I left my car out in -20C temperatures for a while and drove it 'til it was warmed. Got home, parked, the the RPMs slowly went down 'til it stalled. I thought it was the extreme cold.

Today, I drove it for much longer on the highway. It was totally warmed up and was driving fine. Parked it at home... and the lights would dim BEFORE the RPMs dipped almost causing it to stall.. this cycle repeated 'til I turned that car off.

I can't afford to have it die on me now. Could it be the alternator? I have a solid CEL, but that's my EVAP. I'll be scanning it tomorrow, but don't expect to see anything out of the ordinary.

Old 02-11-2008, 08:18 PM
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Default BTW: heater was off. Also this was hardcore dimming and dipping, enough to almost choke the engine.

Lights also go very dim when I crank engine to start the car.

Suck at diagnosing this stuff...
Old 02-11-2008, 08:29 PM
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sounds like the alternator...what was your voltage meter reading?
Old 02-11-2008, 08:42 PM
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Default My dad always said

Never have any electronics on before you crank your car. Dunno if that makes a difference on anything, but I normally try to start the engine with lights and everything off.
Old 02-11-2008, 08:53 PM
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12 when off. 14 when running :S Don't have a multimeter yet, so dunno exactly.
Old 02-12-2008, 07:05 AM
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Default true for the llights - the rest are not heavy loads - it does sound like the alternator

but sometimes a bad battery can cause these symptoms
Old 02-12-2008, 07:19 AM
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Default exactly what my last car did when the alternator went out too..

started out like this then the next day i was stranded in the middle of the freaking 4 lane intersection in the left hand turn lane facing up hill.. good thing that car had steel bumpers got a guy in a truck to push me up the hill out of the way of traffic.. pulled the part out took it in got a replacement and put it back and was on my way 4 hours later.. i remember how HOT it was that day.. in the middle of the summer.. sure beats auto work in the winter ..
Old 02-12-2008, 07:27 AM
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Thanks for the input. Will replace battery today and see how that goes (only the 2nd one after OEM)
Old 02-12-2008, 07:54 AM
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2nd-- to my knowledge
Old 02-12-2008, 08:01 AM
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Default did you get your alternator tested?

or are you just going to destroy a new battery if its not the cuplrit?


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