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Old 06-01-2011, 01:02 AM   #1
WheyArea
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HELP: parasitic drain

Having some sort of parasitic drain on my battery (need to jump it every time I drive) and so I wanted to figure out if it's the battery, alternator or climate control unit.

Alternator test
- all accessories on (wipers, radio, lights, sub, fan) while car was running
- reached 13.9v

Climate control
- replaced FSR, blower speeds are now distinguishable from low-med-high
- however, still get the random blower speeds @ startup about once a day

Battery
- 14.12v while running (no accessories)
- 12v sitting
- however, charged battery to 75% with charger, car would not turn over and just made that clicking noise
- tested battery and found it at 1% charge

I know it's not the starter or ignition coils because my car starts with a jump everytime (portable jumper) but it's beginning to be a PITA

Any help would be MUCH appreciated as I'm trying to avoid going to a shop to charge me $200+ only to find out it was something I could have replaced myself

Thanks!
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Old 06-01-2011, 01:03 AM   #2
Chris-alfonso
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When was the last time you got a new battery? because it sounds like your battery the issue.

the climate control problem is it set to auto or manual fan speed? if it's at auto it will have a higher fan speed at start up to try and bring the interior temp to what you have it selected too.

Last edited by Chris-alfonso; 06-01-2011 at 01:04 AM.
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Old 06-01-2011, 01:12 AM   #3
WheyArea
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Previous owner bought the battery less than a year ago, but I think because I've been jump starting it everyday for the past 2 weeks w/o finding the culprit I may have zapped the battery cells.

I'll definitely have to buy a new one it seems. My biggest problem is figuring out if the climate control unit is what was sucking up all the juice to begin with. If so, a new battery will have the same issues. I never leave the fan on auto and always have it off before I turn off the car. Yet it still turns on at start-up with random temps and auto function
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Old 06-01-2011, 01:21 AM   #4
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get a new battery. that should solve your power issues and make sure to get the right one.

as for the AC problem thats really strange maybe you have a ghost in your car that gets hot/cold in the middle of the night and turns it on and off periodically I can't recall exactly but I think someone posted up something about the AC issue but it had something to do with that auto button.
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Old 06-01-2011, 01:29 AM   #5
WheyArea
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The E46 Ghost.... the one who keeps causing all the random rough idles, cooling issues and subframe cracks. That'll be the old crazy-man-ghost stories we tell kids who want to purchase one.

Going to check out Walmart tomorrow to see if they still sell those EverStart replacement batteries for $75
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Last edited by WheyArea; 06-01-2011 at 01:31 AM.
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Old 06-01-2011, 01:36 AM   #6
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sounds about right lol

I haven't heard about that battery but I have the Duralast 94R and it's pretty good, lasted me 4 years and counting (knock on wood)
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Old 06-01-2011, 01:40 AM   #7
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If you plan on replacing your battery, get a replacement battery at 'interstate'

http://www.interstatebatteries.com/c...r/Default.aspx

Ask for Econo batteries ~ refurbish ones; our battery is only $40. Give them a call before you drive down there.

I have it in my car for 3 years now.
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Old 06-01-2011, 01:47 AM   #8
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Quote:
Originally Posted by Chris-alfonso View Post
sounds about right lol

I haven't heard about that battery but I have the Duralast 94R and it's pretty good, lasted me 4 years and counting (knock on wood)
I found ppl use that Duralast 94R but it seems they only sell it at Autozone and they're over $100+ vs. $70 just a few years ago

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If you plan on replacing your battery, get a replacement battery at 'interstate' .
Thanks Alex, I'll check it out. BTW how was the meet on Fri?
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Old 06-01-2011, 01:55 AM   #9
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Quote:
Originally Posted by WheyArea View Post
I found ppl use that Duralast 94R but it seems they only sell it at Autozone and they're over $100+ vs. $70 just a few years ago



Thanks Alex, I'll check it out. BTW how was the meet on Fri?
The Friday meet are cool. Come check it out when you're free. I noticed you been busy.
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Old 06-01-2011, 02:02 AM   #10
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I had a battery drain problem and it turned out that I had a bad resistor (I believe it had something to do with the car stereo). The bad resistor kept the car from "sleeping" and thus the battery was draining because everything couldn't shut off. Once that problem was fixed, we realized that the (relatively new) battery had a few cells killed due to multiple jump starts, so a full recharge fixed that problem. It's been fine ever since (knock on wood).
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Old 06-01-2011, 02:03 AM   #11
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How'd you figure out it was a bad resistor? Do you have the PN#?
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Old 06-01-2011, 02:07 AM   #12
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Quote:
Originally Posted by WheyArea View Post
How'd you figure out it was a bad resistor? Do you have the PN#?
The dealership did. It was fixed under CPO so I'll see if I have the part #. The tech remembered that he had seen that type of problem before because they tried everything and couldn't figure it out until he remembered that issue. They did a long term battery drain test to help diagnose the problem. I'll let you know tomorrow what the part # is if I have it.
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Old 06-01-2011, 07:43 AM   #13
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search for the battery thread. a lot of people are using the walmart battery with great results. As for what it could be. Start pulling fuses at night till you find the one that stops (or doesnt stop) the problem. The resistor issue the person mentioned could be something to do with the K-Bus which is what controls most of the interface between electronics. you need to search, but I think its fuse 54. if you kill that (and your door locks, and a bunch of other stuff will go crazy), that may be the culprit. in my old school car installer days we used to say Identify (the problem), Isolate (the cause), Eliminate (the issue). Start eliminating stuff via pulling fuses.
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Old 06-01-2011, 12:18 PM   #14
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Originally Posted by johnrando View Post
The dealership did. It was fixed under CPO so I'll see if I have the part #. The tech remembered that he had seen that type of problem before because they tried everything and couldn't figure it out until he remembered that issue. They did a long term battery drain test to help diagnose the problem. I'll let you know tomorrow what the part # is if I have it.
Thanks buddy, any help is much appreciated

Quote:
Originally Posted by jgold47 View Post
search for the battery thread. a lot of people are using the walmart battery with great results. As for what it could be. Start pulling fuses at night till you find the one that stops (or doesnt stop) the problem. The resistor issue the person mentioned could be something to do with the K-Bus which is what controls most of the interface between electronics. you need to search, but I think its fuse 54. if you kill that (and your door locks, and a bunch of other stuff will go crazy), that may be the culprit. in my old school car installer days we used to say Identify (the problem), Isolate (the cause), Eliminate (the issue). Start eliminating stuff via pulling fuses.
I'm going to start this tonight. Last night I charged my batt to 100% and in the morning it was @ 75% so it's not the alternator. This car is my DD but I really want to test driving/leaving the car without the climate control unit too. Too bad it's raining so I'm going to need the defrost
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Old 06-01-2011, 07:02 PM   #15
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Originally Posted by johnrando View Post
The dealership did. It was fixed under CPO so I'll see if I have the part #. The tech remembered that he had seen that type of problem before because they tried everything and couldn't figure it out until he remembered that issue. They did a long term battery drain test to help diagnose the problem. I'll let you know tomorrow what the part # is if I have it.
The part was the "final stage blower resistor". One the worksheet, I have the following #'s:

7468WBCPO
64-11-6-920-365 (think that's the part #)
641020

GL!
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Old 07-25-2012, 11:36 AM   #16
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sorry about reviving thread from the dead

curious about the "final stage blow resistor", where is it located?
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