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03-25-2015, 01:25 PM
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#1 | My homepage has been set to RS
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| Help: Battery, Alternator, or Connection Issue?
I've been having bit of a puzzling issue with my G35 coupe (2005, 6mt).
This started Monday after I pulled over to gas up. When I got back into my car to start it all lights came on as usual but when I turned the key to actually start the engine all that happened was it clicked once than all electrical power was lost.
A few minutes later a couple lights would come back in (but very dim) and the key remote can unlock/lock the car. I got a jump from someone and the car started up right away. I drove home (Vancouver - Coquitlam) fine.
The next morning, the same issue happened again. Turn key to start, click sound, all electric power lost. Jumping the car again started it immediately. After I got to work, I turned off my car and then started it again with no problems.
Leaving work yesterday I had no problems starting and made it home fine. When I got home I turned the car off but the issue happened again when I tried starting it.
I required another jump start today morning, but this afternoon the car started up perfectly fine after being parked for a few hours at work (I tried about 4-5 times in a row: start, run for a minute, turn off).
The battery is still fairly new (installed September last year) and there are no aftermarket stereo accessories.
A similar issue was happening last year but stopped until this week when the new battery was installed.
Anyone have any idea on what could be causing it?
Edit: Had no issues yesterday after getting a jump in the morning. Started up fine after work and when I got home. I installed a new battery just in case and will wait and see if the issue persists.
Last edited by ajax; 03-26-2015 at 08:42 AM.
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03-25-2015, 01:49 PM
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#2 | I contribute to threads in the offtopic forum
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Sound like your Alternator won't charge.
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03-25-2015, 02:03 PM
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#3 | My homepage has been set to RS
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Originally Posted by Bender Unit Sound like your Alternator won't charge. | If it's an alternator problem, I should have the electronics dying when I drive though right?
I'll try to get my hands on a voltmeter and check tonight though.
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03-27-2015, 12:59 AM
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#4 | I Will not Admit my Addiction to RS
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check with a voltmeter you should see your voltage sitting between 14.5-15.5 approx. a dead cell on a battery can also cause the same concern.
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03-27-2015, 04:05 PM
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#5 | Zionism gets my shell hard and slimy
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very easy way to test alt vs battery.. start the car.. now take the negative off a battery.. if the car dies, its the alternator. if the car runs its the battery
a voltmeter would be best to test if there is a connection issue somewhere
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03-27-2015, 04:11 PM
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#6 | Head of HR....have a seat on that couch
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Seems like a bad connection somewhere.
Have you checked the wires and clamps going to the battery?
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03-27-2015, 04:32 PM
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#7 | To me, there is the Internet and there is RS
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Double check that your battery terminals are properly tight and clamping the posts. I had an issue once where the post was a touch too small, so when things heated up the clamp expanded and didn't make good contact.
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03-27-2015, 11:05 PM
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#8 | 14 dolla balla aint got nothing on me!
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I second the bad connection at the terminals diagnosis.
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03-28-2015, 02:37 PM
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#9 | NOOB, Not Quite a Regular!
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definitely check for lose/bad connections first leading to the battery and then proceed to alternator & battery test.
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03-28-2015, 02:52 PM
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#10 | I WANT MY 10 YEARS BACK FROM RS.net!
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Originally Posted by ajax If it's an alternator problem, I should have the electronics dying when I drive though right? | Incorrect - everything will continue running off the battery.
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03-28-2015, 03:17 PM
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#11 | Head of HR....have a seat on that couch
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Originally Posted by Soundy Incorrect - everything will continue running off the battery. | Eventually, the lights will dim and engine will run like shit, then die.
I say it's a connection problem cause it's intermittent and fires up with a boost (more amperage to overcome a bad connection).
If the alt was bad, it would eventually drain the batt and when he went to boost it, it would start but as soon as you disconnect the cables, the engine would die.
If the batt was bad, it wouldn't start sometimes - it would only start with a jump every time.
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03-28-2015, 03:50 PM
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#12 | I WANT MY 10 YEARS BACK FROM RS.net!
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Originally Posted by ICE BOY Eventually, the lights will dim and engine will run like shit, then die. | True, but it won't all just die instantly. Lights will probably be a bit dimmer since they're only running at 12V instead of ~14.5, but other than that, the thing would keep running for a while. Quote:
I say it's a connection problem cause it's intermittent and fires up with a boost (more amperage to overcome a bad connection).
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03-28-2015, 09:36 PM
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#13 | NOOB, Not Quite a Regular!
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Without a load tester it's really hard to say. Right now we are all just guessing.
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03-28-2015, 10:19 PM
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#14 | I WANT MY 10 YEARS BACK FROM RS.net!
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Originally Posted by SpeedFactor Without a load tester it's really hard to say. Right now we are all just guessing. | Sure, but most are reasonably educated guesses based on experience and the described symptoms.
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03-29-2015, 12:51 AM
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#15 | To me, there is the Internet and there is RS
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Originally Posted by Soundy Incorrect - everything will continue running off the battery. | Depends on the car, with no alt my car will limp along at best, any attempt to go above a fraction of throttle and it bogs.
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Originally Posted by maksimizer half those dudes are hotter than ,my GF. | Quote:
Originally Posted by RevYouUp reading this thread is like waiting for goku to charge up a spirit bomb in dragon ball z | Quote:
Originally Posted by Good_KarMa OH thank god. I thought u had sex with my wife. :cry: | |
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04-02-2015, 02:53 PM
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#16 | Head of HR....have a seat on that couch
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Survey says..........????????
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04-16-2015, 07:07 AM
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#17 | Willing to sell body for a few minutes on RS
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Originally Posted by snails very easy way to test alt vs battery.. start the car.. now take the negative off a battery.. if the car dies, its the alternator. if the car runs its the battery | This is also a very easy way to potentially damage the electronics in your car.
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04-22-2015, 10:20 PM
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#18 | RS Lurker, I don't post!
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I think you should ask the repair shop, Battery, Alternator, or Connection
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04-23-2015, 10:44 AM
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#19 | I contribute to threads in the offtopic forum
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If your alternator was pooched you wouldnt be able to drive from Van to Coq on a dead battery. So Id be inclined to think battery or connection. DO NOT ATTEMPT TO RUN YOUR ENGINE AND DISCONNECT YOUR BATTERY TO SEE IF THE ALTERNATOR IS FINE. That will fuck up a good alternator in a hurry leading you to think you need an alternator when you more often then not didnt.
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