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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 12-23-2015, 09:42 PM
alexandergrimm alexandergrimm is offline
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Location: Lewiston
 
Join Date: Dec 2015
Posts: 3
Mein Auto: 93 BMW 318IS
Electrical problem

Hey guys im new to the BMW world and i bought a 93 BMW 318IS about 2 months ago and it drove fine for the first couple times then i started it one day after letting it sit for a week without the battery in it and it had to be jumped. i let it idol for about 10 minutes to charge the battery but when i turned my headlights on it died immediately. i figured that it was the alternator so i bought a new one from orileys and had it installed about 2 days ago. it started right up and ran great. i took it out on the highway for about three miles then turned around and came back. i turned it off at my cousins house and tried to start it about 3 minutes later and the battery was drained enough that it wouldnt start the car. i had my gf jump it off again and when i went to turn the lights on it died again. i had her jump it again and kept her car hooked up to the battery for about 5 minutes with the bimmer running and it ran just fine with the headlights on... does anyone have any helpful hints? im about ready to start banging my head against the wall.....
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  #2  
Old 12-23-2015, 10:29 PM
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hornhospital hornhospital is offline
D'oh, You Kids!
Location: In the Grumpy Chair
 
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Mein Auto: E24x2,E36x2,E30x1, F150
You need to charge the battery, preferably on a plug-in charger. You can kill a new alternator by putting a dead battery in there and trying to recharge it from dead with the alternator.
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BMW-CCA #441426 My E30 makes me do stupid FUN things.

1995 318is "Bebe"; 1993 325is "Elvira"; 1985 635CSi "Katja"; 1984 633CSi "Sylvia"; 1987 325is "Odette"

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  #3  
Old 12-24-2015, 07:46 PM
alexandergrimm alexandergrimm is offline
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Location: Lewiston
 
Join Date: Dec 2015
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Mein Auto: 93 BMW 318IS
thank you ill track down my battery charger and try that. but why wouldnt it charge up or maintain a charge at 65 mph? it was holding at around 2500 rpm which should be high enough to atleast maintain it
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  #4  
Old 12-24-2015, 08:22 PM
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hornhospital hornhospital is offline
D'oh, You Kids!
Location: In the Grumpy Chair
 
Join Date: Jan 2008
Posts: 19,294
Mein Auto: E24x2,E36x2,E30x1, F150
Because it was all but dead to start with. You need to get a volt meter and check to see that the new alternator is actually charging, and that the battery is TAKING a charge. Check the battery after charging it with a plug-in charger. It should be about 13 volts MINIMUM, and when the engine is running it should show around 14 volts at the battery. If it just shows 12 volts with it hooked up and the engine running, the new alternator is dead.
__________________
Quotes to live by:
guessing gets expensive...drivinfaster
nothing is more expensive than a cheap BMW...c4harpe13
buying a ratty example (of a BMW) is a parasitic relationship.(and you ain't the mosquito) 7pilot
Ken Kanne, Silverhill, AL, E36 & New Member Intro Forum Mod/Bimmerfest Misplaced-Posting Tow Truck
BMW-CCA #441426 My E30 makes me do stupid FUN things.

1995 318is "Bebe"; 1993 325is "Elvira"; 1985 635CSi "Katja"; 1984 633CSi "Sylvia"; 1987 325is "Odette"

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  #5  
Old 12-24-2015, 09:56 PM
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Daggerty Daggerty is offline
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Location: Wisconsin
 
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Mein Auto: 1995 BMW 325is
Make sure the connections are clean
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  #6  
Old 12-25-2015, 05:28 PM
alexandergrimm alexandergrimm is offline
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Location: Lewiston
 
Join Date: Dec 2015
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Mein Auto: 93 BMW 318IS
alright thanks guys ill try that and let you know the results
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