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      07-13-2007, 08:53 PM   #1

Drives: Carbon black 01 M3
Join Date: Jul 2007
Location: Toronto, Canada

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Cold start problems

Having trouble starting up my 01 M3 when its been sitting for long periods of time. Sometimes it just cranks then starts, but sometimes nothing. Once i try a second time, it starts fine, and so on throughout the day. The battery is fine. Any advice??
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      07-27-2007, 02:00 PM   #2
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Drives: E46 M3
Join Date: Mar 2007
Location: NJ

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Mine has been doing that since I bought it in 2002. This is a known issue with the E46 M3s. Many have had better luck going back to the dealer during the warranty period. Depending on the dealer, they may replace the fuel pump to fix the issue but I've heard of others that still had the problem even with the new pump. I just learned to live with it. How I managed to get around it is by keeping the the key in the "On" position for a few seconds before cranking the motor. That allows the pump to pressurize the fuel lines. So far, so good. My car starts on the first crank every time.

You can also find many other great info on this issue on M3Forum.
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