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Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 09-04-2013, 05:15 AM   #1
E462005
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Car wont start

Went this morning to start the car and it turned on. I noticed tho when i did start it that it started kind of funny. So i turned it off and tried to turn it on again and all it does is click. All the lights and everything turns on just fine. I dont think its the battery or alternator. The car is at 126000 miles. Possible starter problem. Feed back is welcomed
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Old 09-04-2013, 05:21 AM   #2
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What kind of funny? Seriously, describe.
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Old 09-04-2013, 05:45 AM   #3
E462005
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Re: Car wont start

Sorry, it was kind of sluggish when it started. Turned it off then tried to turn it on again and all it does is click. All the lights flicker with the clicks when i try to start it on

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Old 09-04-2013, 06:03 AM   #4
E462005
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Re: Car wont start

The car has power radio and all lights kick on. And it makes a clicking sound when trying to start

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Old 09-04-2013, 06:36 AM   #5
Imanewbie
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Car wont start

Take the battery out and have it tested. Your going to have to do the process of elimination because of your skill level.


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Old 09-04-2013, 08:14 AM   #6
Bmill160
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Re: Car wont start

^^ do this. I travel a ton for work and left the car in a covered lot at the airport for a week last winter and had electrical problems ever since. Identical to what you're describing. I would put it on a trickle charger twice a week but couldn't get it to hold a charge and if i tried to put the top up or down without the car on it would go completely dead.

Use the voltage test on the dash and see if you're getting power back to your battery and you can maybe rule out the alternator. Should be 12v with car off, 14+ with it on.

In my scenario, the cold temperatures caused the battery to drop a cell, had it replaced on warranty at auto zone, problem solved.

Good luck!

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Old 09-04-2013, 08:27 AM   #7
E462005
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Re: Car wont start

Yea im going to check the battery after work

Last edited by E462005; 09-04-2013 at 08:27 AM.
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Old 09-04-2013, 08:38 AM   #8
Bmill160
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Quote:
Originally Posted by E462005 View Post
Yea im going to check the battery after work
To your pre-edit reply: It could be that the battery just isn't producing enough cold crank amps to turn over the engine. It can still have plenty of juice which is why you have accessories running. Think of voltage as the speed of the electricity and amperage as the volume of the current, as in a river. A 6" deep creek moving very fast can still move all of the little things you put in its way, but it won't move you. On the other hand, a 6' deep river moving slowly may knock you off your feet but you won't go that fast.

That's the same difference in your battery. So if you do the dash test (it takes 30 seconds) and you see that you have 12v with the car off, you have plenty of "velocity" to run the accessories. If you turn the car on and test it and it jumps, it means the alternator has a higher output than the battery and is pushing energy back into the battery. If the voltage doesn't go up, we probably have an alternator problem.

If the voltage reads ok, and the problem stays as you described, it could be that the battery has a bad cell and just isn't producing enough "volume" of electricity. The cells that are working, are still spitting it out at the same speed, voltage, but there is less of it than there should be. This would be a battery problem.

If the voltage test checks out, and the battery is removed and tested and checks out, we have a voltage leak. Something is drawing power while the car sits and then it's a big problem.

So not to add worry, like I said I had the same identical symptoms, and mine was a free replacement at AutoZone.
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Old 09-04-2013, 08:45 AM   #9
E462005
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Re: Car wont start

Quote:
Originally Posted by Bmill160 View Post
To your pre-edit reply: It could be that the battery just isn't producing enough cold crank amps to turn over the engine. It can still have plenty of juice which is why you have accessories running. Think of voltage as the speed of the electricity and amperage as the volume of the current, as in a river. A 6" deep creek moving very fast can still move all of the little things you put in its way, but it won't move you. On the other hand, a 6' deep river moving slowly may knock you off your feet but you won't go that fast.

That's the same difference in your battery. So if you do the dash test (it takes 30 seconds) and you see that you have 12v with the car off, you have plenty of "velocity" to run the accessories. If you turn the car on and test it and it jumps, it means the alternator has a higher output than the battery and is pushing energy back into the battery. If the voltage doesn't go up, we probably have an alternator problem.

If the voltage reads ok, and the problem stays as you described, it could be that the battery has a bad cell and just isn't producing enough "volume" of electricity. The cells that are working, are still spitting it out at the same speed, voltage, but there is less of it than there should be. This would be a battery problem.

If the voltage test checks out, and the battery is removed and tested and checks out, we have a voltage leak. Something is drawing power while the car sits and then it's a big problem.

So not to add worry, like I said I had the same identical symptoms, and mine was a free replacement at AutoZone.
Awesome!!! And thank you for breaking it down for me i really appreciate that. I will be back on later today to let you know the results to this problem! Again thank you

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Old 09-04-2013, 02:35 PM   #10
E462005
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Car wont start

Quote:
Originally Posted by Bmill160 View Post
To your pre-edit reply: It could be that the battery just isn't producing enough cold crank amps to turn over the engine. It can still have plenty of juice which is why you have accessories running. Think of voltage as the speed of the electricity and amperage as the volume of the current, as in a river. A 6" deep creek moving very fast can still move all of the little things you put in its way, but it won't move you. On the other hand, a 6' deep river moving slowly may knock you off your feet but you won't go that fast.

That's the same difference in your battery. So if you do the dash test (it takes 30 seconds) and you see that you have 12v with the car off, you have plenty of "velocity" to run the accessories. If you turn the car on and test it and it jumps, it means the alternator has a higher output than the battery and is pushing energy back into the battery. If the voltage doesn't go up, we probably have an alternator problem.

If the voltage reads ok, and the problem stays as you described, it could be that the battery has a bad cell and just isn't producing enough "volume" of electricity. The cells that are working, are still spitting it out at the same speed, voltage, but there is less of it than there should be. This would be a battery problem.

If the voltage test checks out, and the battery is removed and tested and checks out, we have a voltage leak. Something is drawing power while the car sits and then it's a big problem.

So not to add worry, like I said I had the same identical symptoms, and mine was a free replacement at AutoZone.
So did the voltage test and it read 094 to 097.... I took the battery off and I'm going to auto zone to get it tested there...









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Old 09-04-2013, 02:39 PM   #11
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Probably doesn't hurt to have it checked out, but wondering if maybe you did the wrong test? It should say 12.2V or something near that, then when the car is on it will go up to 14.something and should move around as the power usage fluctuates.

Check this out
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Old 09-04-2013, 03:31 PM   #12
E462005
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Car wont start

Maybe I did, but that is the video the I watched to do the voltage test. It was my first time doing it. Now I went to advance auto parts because they are the closest. I had them test it and the tester said it had to be recharged? So I'm going back in a bit to find out if its holding a charge.


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Old 09-04-2013, 03:34 PM   #13
Bmill160
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Yep, that's the annoying part about it, they normally have to have it sit on the charger for an hour. Just make sure they don't take it off the charger and test it and say "Yep, it's charged, must be a good battery." They tried that with me twice before I finally pressured the guy to "try again." He came back and said yea, it dropped a cell.
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Old 09-04-2013, 05:43 PM   #14
E462005
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Car wont start

Quote:
Originally Posted by Bmill160 View Post
Yep, that's the annoying part about it, they normally have to have it sit on the charger for an hour. Just make sure they don't take it off the charger and test it and say "Yep, it's charged, must be a good battery." They tried that with me twice before I finally pressured the guy to "try again." He came back and said yea, it dropped a cell.
Had him test it twice in front of me. so I got home put the battery in and car started up just fine. I went back to advance auto and had them recheck it along with the alternator. He said every thing is good.


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Old 09-30-2013, 08:11 AM   #15
Imanewbie
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Car wont start

It could have been corrosion on the battery terminal I'm thinking.


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