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E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 06-03-2011, 02:35 PM
Vefutixo Vefutixo is offline
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Location: California
 
Join Date: May 2011
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Mein Auto: 1984 325e
Car randomly shutting off on me

Hey guys, I've tried searched Google these forums and R3V but I can't find anyone that knows a definite answer for this problem. Recently while driving my car will just randomly turn off, it doesn't stutter at all and the check engine light doesn't come on leading me to believe it's not the fuel pump. I also have to wait like 10-15 seconds before I turn the car back on because if I do not wait then the engine wont turn over. Does anyone know what I should start with replacing? I think it may be the battery due to the fact that it is 7 years old...

Thanks!
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  #2  
Old 06-03-2011, 05:27 PM
anstead610 anstead610 is offline
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Location: Bethlehem, PA
 
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Mein Auto: 24v e30 -88 toyota pickup
Not the battery, mine is brand new and I have the same exact issue.
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  #3  
Old 06-03-2011, 05:28 PM
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Try&CatchMy325 Try&CatchMy325 is offline
E30's,Work,Eat,Sleep
Location: Washington
 
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Mein Auto: 1997 328i
It is not your battery.... the only thing your battery does is start your car. The alternator runs the electronics in the car while it is running.
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  #4  
Old 06-03-2011, 06:51 PM
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eieio4tn eieio4tn is offline
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Location: bimmerhaven
 
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Mein Auto: 1987 325is
crank sensor might be a good place to start...
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  #5  
Old 06-03-2011, 07:33 PM
Vefutixo Vefutixo is offline
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Location: California
 
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If it was the crank sensor wouldn't the car have problems starting all the time?
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  #6  
Old 06-03-2011, 08:42 PM
old carnut old carnut is offline
old car nut
Location: Stockton Ca
 
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Mein Auto: 1986 325ES STICK
Have you read my thread below yours? car randomly shuts off.
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  #7  
Old 06-03-2011, 10:18 PM
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eieio4tn eieio4tn is offline
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Quote:
Originally Posted by Vefutixo View Post
If it was the crank sensor wouldn't the car have problems starting all the time?
no...you could drive 2 or 100 miles between episodes. a bad connection or wire can cause you a shut down. mine was weeks apart at first. wait 5 minutes...crank and drive. then i could only get a mile or less down the road. wait, crank and drive. it would idle in the driveway for half an hour, but start down the road...out again. the shiething just above the sensor is bad to crack and the wires break and make intermittant contact. all i am saying is...if you have never changed it, do it and save yourself a tow bill in the future...
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  #8  
Old 06-04-2011, 12:29 AM
Vefutixo Vefutixo is offline
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Location: California
 
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Mein Auto: 1984 325e
Well I looked through the service history of the car and found that the idle control valve has been replaced three times (One just 2 months ago), so I assume that isn't the problem. I should note as well that this problem only happens when i'm coming to a stop. I'll look into replacing the crank sensor tomorrow and if that fixes the problem i'll post a follow up and tell you guys. Thanks for all your help so far.
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  #9  
Old 06-04-2011, 08:03 AM
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bimmerboy08 bimmerboy08 is offline
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Location: Omaha, NE
 
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Posts: 1,337
Mein Auto: 1988 BMW 325i
When my crank position sensor was grounding out, it caused all sorts of strange problems. If you have recently changed the timing belt you may have inadvertently bumped the sensor. Seriously that thing is where electric gremlins are born.
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The E30 is what all actual driving enthusiasts are after. It's an unpretentious machine, quietly capable of spectacular feats of handling. It's light, simple design is rugged enough to run against $400k rally cars, but on the street it' communicative chassis delights even the most disinterested driver. It really is one of the world's ultimate driving machines
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  #10  
Old 06-04-2011, 11:35 AM
Vefutixo Vefutixo is offline
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Location: California
 
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Mein Auto: 1984 325e
We did just do the timing belt so maybe the sensor was bumped. I'll look into it.
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  #11  
Old 06-06-2011, 03:08 PM
Vefutixo Vefutixo is offline
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Location: California
 
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Mein Auto: 1984 325e
Well it seems like I fixed the problem. It turns out that the air intake tube wasn't fully attached and when I put it on the problem ceased to exist and the idle even improved slightly. So anyone with the same problem should check this tube first!

Thanks for the input guys!
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