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Old 10-21-2014, 07:53 AM
 
2 posts, read 2,469 times
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I have a 2003 BMW 325xi and the vehicle will not start in the morning after the cold night. The lights in the dash come on, the engine turns over, but the vehicle will either not turn on or if it does, it will stay on for a split second and die. I have been having this problem since it started getting colder outside. I park the car outside. Sometimes, I can get the car to start by putting the car in neutral and giving it gas when it first tries to start; however, this has not been working in the early monring when it is very cold outside. Once I get the car to turn on, the car will stay on (as long as I get it going initially) and it will start after being turned off repeatedly that day. The car does not die when going on an incline (though I don't take it up mountains daily) and it does not die out when stopped at a red light. I have checked the spark plugs for the fuel pump and all related spark plugs look fine. What could this be? I appreciate any help in advance!
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Old 10-21-2014, 08:02 PM
 
Location: Las Vegas, Nevada
12,686 posts, read 31,794,409 times
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Quote:
Originally Posted by tcurreri View Post
I have a 2003 BMW 325xi and the vehicle will not start in the morning after the cold night. The lights in the dash come on, the engine turns over, but the vehicle will either not turn on or if it does, it will stay on for a split second and die. I have been having this problem since it started getting colder outside. I park the car outside. Sometimes, I can get the car to start by putting the car in neutral and giving it gas when it first tries to start; however, this has not been working in the early monring when it is very cold outside. Once I get the car to turn on, the car will stay on (as long as I get it going initially) and it will start after being turned off repeatedly that day. The car does not die when going on an incline (though I don't take it up mountains daily) and it does not die out when stopped at a red light. I have checked the spark plugs for the fuel pump and all related spark plugs look fine. What could this be? I appreciate any help in advance!
Where are you? Maybe it has to do with altitude.
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Old 10-22-2014, 01:21 AM
 
Location: In a state of mind
5,998 posts, read 6,792,809 times
Reputation: 11284
Hook it to a battery charge overnight and see if there is any difference. My guess is a weak battery.
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Old 10-22-2014, 07:18 AM
 
83 posts, read 219,138 times
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Your battery may not have a high enough CCA rating or you may need to change the viscosity of the oil you are using.
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Old 10-27-2014, 10:14 AM
 
2 posts, read 2,469 times
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Charging the battery makes no difference. I am in Reno, NV but I've owned the car for almost four years and have never had an issue so I'm not sure if altitute would still be something to consider. I'm thinking this has something to do more with the fuel, though I am not positive.
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Old 10-29-2014, 12:29 PM
 
Location: Reno
843 posts, read 1,827,312 times
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Fuel icing perhaps, you may have water in your fuel that ices up and stops fuel flow. The altitude should not be an issue on a modern fuel injected car, if it has throttle body injection that would be my first suspect.

When it's cold out, get a shop drop light with an incandescent bulb (40 watts should do) and put it somewhere under the hood as low as you can get it without being below the engine (you want the heat to stick around the engine compartment as much as possible). Leave that run overnight, turn off and remove in the morning and see if your car starts up.
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