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Old 01-05-2010, 06:35 AM   #1
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Starting Issues

Hey all. It's been awhile since I've been around but I've been having a few issues and knew this was the best place to come for help. Here's the issue any thoughts?

About a month ago my car wouldn't start when I left work. A coworker jumped me and I drove home. The car started fine the next morning but I deceided to replace the battery because it was pretty old. Drove the car for a few weeks with no problems. My fiancee and I went home for the holidays and took her car. My car sat for 2 weeks without being started. That brings us to yesterday. I started the car around 6:30 in the morning with no problems at all. Went to work and the car started fine at 4:30. Droved to my buddy's and left his place at 7:00, again started fine. Drove to my fiancee's and tried to leave there at 9:00, car wouldn't start and needed to be jumped. Drove home and used my DMM to measure the battery voltage. 12.8V after being parked a few minutes. 14V with the car idleing. Car started fine again this morning.

I'm going to get the alternater checked on my lunch break today. Any other thoughts? Thanks in advance.
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Old 01-06-2010, 04:47 AM   #2
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Re: Starting Issues

I would say alternator, or maybe a drain somewhere.

What voltage does the Alternator give when the car is running?
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Old 01-06-2010, 06:13 AM   #3
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Re: Starting Issues

Got the alternator tested yesterday. The results were iffy, but we did notice that my belt tensioner was shot. I replaced the tensioner and am going to get the alternator tested again today. Hopefully the tensioner did the trick but if not the alternater was probably the culprit.

OsirisGuy: The voltage was 14.0V - 14.2V with the car running. I'm hoping it's not a drain becuase I have no idea what would be causing it.
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Old 01-06-2010, 06:34 PM   #4
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Re: Starting Issues

Lol...sounds like Tiff's car used to do. It ended up being battery problems in the end...
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Old 01-06-2010, 09:08 PM   #5
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Re: Starting Issues

I'm going to replace the alternator tomorrow and with any luck all will be well again...
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Old 01-06-2010, 10:10 PM   #6
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Re: Starting Issues

make sure your battery terminals arent loose
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Old 01-07-2010, 08:33 AM   #7
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Re: Starting Issues

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make sure your battery terminals arent loose
haha, they're not. But it never hurts to check.
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Old 01-07-2010, 04:31 PM   #8
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Re: Starting Issues

Do your lights go dim while driving at night? That's a sure sign of alternator trouble.
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Old 01-11-2010, 08:53 AM   #9
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Re: Starting Issues

Replaced the alternator. So far so good...
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Old 01-12-2010, 12:37 PM   #10
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Re: Starting Issues

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Lol...sounds like Tiff's car used to do. It ended up being battery problems in the end...
Just went thru the same thing replaced the battery problem solved

If a battery is bad, it will often give the impression that the alternator is bad... being the alternator is not being allowed to charge to it’s maximum capacity. But your test numbers are good
I also replaced the factory ground cable the factory copper end attaches all the white crap (acid drying) you are getting corrosion It could be that the battery is just sulfating so badly that it needs to be replaced or the charging system is overcharging
A fully charged battery will sit idle at 12.6 volts; 2.1 volts per six internal cells. Once the vehicle is started without a load (lights, radio, A/C and fan), the volts will rise to an average of 14 volts. If the multimeter reads higher than 14.8 volts, then the alternator should be checked for overcharging.
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