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General E46 Forum
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Old 02-22-2015, 04:12 PM   #1
316i
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E46 stalling while driving

Driving my E46 yesterday and suddenly it cut out with the battery light and oil light appearing red , obviously it's stalled , power steering goes and it can be pretty dangerous when turning. Wondering if anyone has an idea of what's causing this?
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Old 02-22-2015, 09:03 PM   #2
chill2
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This has happen to me several times. I can tell you for sure it is the throttle body position sensor. The electrical part of the unit. It seems to me that it loses it electrical signal then shuts off. When mine does not start I just remove the wire connection to the throttle body then reconnected it and it starts right up. I just purchased a used throttle body off eBay from a car that had less miles then on mine 2 days ago. I have 204,400 miles on my 2000 323i still runs great, other than throttle problem which should be fixed once I install new used one. Good luck
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Old 02-22-2015, 09:31 PM   #3
mjpgolf1
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Quote:
Originally Posted by chill2 View Post
This has happen to me several times. I can tell you for sure it is the throttle body position sensor. The electrical part of the unit. It seems to me that it loses it electrical signal then shuts off. When mine does not start I just remove the wire connection to the throttle body then reconnected it and it starts right up. I just purchased a used throttle body off eBay from a car that had less miles then on mine 2 days ago. I have 204,400 miles on my 2000 323i still runs great, other than throttle problem which should be fixed once I install new used one. Good luck

Op has 1.6l 4cyl not the 6cyl that's in your 323 so the issue could be completely different that what you are stating is absolutely positively his problem. That doesn't mean it isn't what's going on but being a completely different motor could change things a bit. Didn't know if you saw that his was different so I wanted to chime in before he goes ordering parts that he doesn't need.

Op hopefully someone with knowledge of your setup can add some suggestions here for you. Sorry to see that you're already having issues but that's how it goes with these cars. Good luck.
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Old 02-22-2015, 09:36 PM   #4
jdstrickland
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Quote:
Originally Posted by 316i View Post
Driving my E46 yesterday and suddenly it cut out with the battery light and oil light appearing red , obviously it's stalled , power steering goes and it can be pretty dangerous when turning. Wondering if anyone has an idea of what's causing this?
There is no useful information in the status of the lights and steering. The steering requires the engine to be running, and the lights are supposed to be on when the key is in Position II (RUN) but the engine is not running. You are driving and the engine shuts down -- the key is still in RUN but the engine is off, so the lights are on -- and this makes the steering go very heavy. You should be aware that as the vacuum fades, the brakes will become increasingly difficult to apply.

All of these things arise out of the engine stopping, they are not why the engine stopped.
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Old 02-22-2015, 09:37 PM   #5
jdstrickland
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Quote:
Originally Posted by chill2 View Post
This has happen to me several times. I can tell you for sure it is the throttle body position sensor. The electrical part of the unit. It seems to me that it loses it electrical signal then shuts off. When mine does not start I just remove the wire connection to the throttle body then reconnected it and it starts right up. I just purchased a used throttle body off eBay from a car that had less miles then on mine 2 days ago. I have 204,400 miles on my 2000 323i still runs great, other than throttle problem which should be fixed once I install new used one. Good luck
The OP has a different engine than you.
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Old 02-22-2015, 10:14 PM   #6
Simmsled
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First and foremost, make sure the connections on the battery are clean and tight!
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Old 02-24-2015, 01:50 AM   #7
eziR
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I had this happen when I first bought my e46, I had a cracked boot and the car was sucking to much air and it would kill the engine. It would happen when I was coming to a stop
Easy fix if that's the problem good luck


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