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Cold issues?

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Old Dec 1, 2009 | 01:33 PM
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Default Cold issues?

Well we've had the start of below freezing weather here in Chicago and yesterday my car started actin up. It seems to struggle to start so I figured it was a battery or alternator issue. But today I also noticed that my mpg's dropped quite a bit. I have no idea what that could mean so I appreciate everyones help in advance. Any ideas guys?
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Old Dec 1, 2009 | 02:28 PM
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Strange...the engine should be running great after a short warm up period when the weather turns cold...cold air is more dense and you get more power What kind of oil are you using? Indy
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Old Dec 1, 2009 | 02:49 PM
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If you can, get a code reader and see what codes have set, But the car was engineered to run in really sub-freezing temps. so i think one of you sensors is broken.
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Old Dec 1, 2009 | 03:09 PM
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Batteries are typically damaged by high-temperature conditions but don't show their weakened condition until the temps drop. This is when oil thickens and current demands increase. I suspect it's time to replace your battery.

Regarding gas mileage: Your mileage will always suffer during cold weather months. This is perfectly normal.
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Old Dec 1, 2009 | 04:44 PM
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Originally Posted by Dave68
Batteries are typically damaged by high-temperature conditions but don't show their weakened condition until the temps drop. This is when oil thickens and current demands increase. I suspect it's time to replace your battery.

Regarding gas mileage: Your mileage will always suffer during cold weather months. This is perfectly normal.
What he said..
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Old Dec 1, 2009 | 06:59 PM
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+2
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Old Dec 1, 2009 | 10:30 PM
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did you do the throttle body coolant bypass?
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Old Dec 1, 2009 | 10:47 PM
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Originally Posted by SaberD
did you do the throttle body coolant bypass?
It hasn't gotten that cold here yet for this to be a symptom, but could be in much colder temps. The lowest it's been so far has been around 27 or 28 overnight. My guess is it's time for a new battery. If it's over 3-4 years old it would be best to replace it and take that out of the hard starting equation. As for the mpg, that's hard to say.
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Old Dec 1, 2009 | 10:54 PM
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What do you mean by struggling to start? I would test the battery, how old is it? What year is your car?

How many miles are on the car? Have you changed the fuel filter, or used any fuel cleaners lately?
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Old Dec 1, 2009 | 10:55 PM
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Originally Posted by MG RED 99
It hasn't gotten that cold here yet for this to be a symptom, but could be in much colder temps. The lowest it's been so far has been around 27 or 28 overnight. My guess is it's time for a new battery. If it's over 3-4 years old it would be best to replace it and take that out of the hard starting equation. As for the mpg, that's hard to say.
Has not been that far below freezing yet.
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