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Old 05-04-2011, 04:55 AM   #1 (permalink)
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Car won't start for hours after shutting off

I have a '95 M3 that doesn't start SOMETIMES after I drive it and shut it off. The times it doesn't start it needs to sit for about 3 hours to start back up again. When I turn the key there's no cranking or clicking at all. Nothing happens. It'll start if I jump it though. However, sometimes after I drive it and shut it off it starts right up again. It's very tough to replicate the problem as it seems random.

Took it to two independent BMW shops and they couldn't fix the problem. One said it might be a bad starter so I got that replaced and still have the same problem so that was money down the drain. I've been having this problem for awhile now and it's very inconvenient. I'm hoping someone here can point me in the right direction.
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Old 05-05-2011, 08:03 AM   #2 (permalink)
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Does it matter how long you run it for before it will play up? i.e. will it start again if you start the engine and then stop it after 10 - 15 seconds? (Is it heat related)?
I'd suspect something to do with the ECU, remove the connector and then reinsert it to make sure the connection is tight.
Can you hear the fuel pump run for ~2 seconds when you move the key to position II? Do all of the other normal dash indicators light up when you try to start it and it fails?
Do your head lights dim at all when you try to start the car and it fails?

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Old 05-05-2011, 08:19 AM   #3 (permalink)
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This subject/problem has been posted many times recently...
Try searching "Starting" and/or "Problems"... If you don't get a satisfactory answer to your issue then I will help you more...
Its just to prevent repeating the same answers, thats all...
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