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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 07-26-2015, 03:07 AM   #1
Registered User
Join Date: Mar 2015
Location: Stourbridge, UK
Posts: 3
My Ride: 318i Touring
Stuck !! Need Help !!

Hi all,

Hopefully someone can help me out with the problem I am having:

Basically, I can start and drive my car (E46 2003 318i touring) then at a random point the car just dies, the EML, ASL, Battery & Oil light come on and the car can't be restarted once it has died, it turns over but won't fire up.

The battery is reading 12.5v with key turned. If i leave the car for ages it will start again but if I drive it the same problem happens, battery reads 14.3v whilst idling and hold it with blowers, wipers, lights, fogs etc on.

I have checked the throttle body and it looks spotlessly clean and moves easily enough.

Sadly I don't have a code reader to identify any fault codes.

Does anyone have any idea what could be causing this?

When i turn the key to position 2, the throttle body makes a long beep noise, then a rattling sound....could it be that the throttle body is faulty?

How would i know if the throttle position sensor is faulty?

i have changed the camshaft sensor as it was suggested that this could be an issue but it still happens. should i change the crankshaft sensor ?

The car has plenty of fuel & oil

Sorry for such a long post.
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Old 07-27-2015, 11:39 AM   #2
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Join Date: Jul 2015
Location: Chicago
Posts: 64
My Ride: 325i
Check voltage of alternator
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Old 07-28-2015, 07:16 PM   #3
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Join Date: Mar 2015
Location: Stourbridge, UK
Posts: 3
My Ride: 318i Touring
Thanks for the tip...sorry to appear dumb but how would I go about doing that and what am I looking for to indicate a problem or not with it?
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