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Do exhaust leaks an...
 
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Do exhaust leaks and cold weather cause misfires upon startup?

  

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My 2001 Oldsmobile Intrigue has been sitting on my driveway for 2 weeks due to a water pump failure, leak in the exhaust, and the A/C compressor pulley bearing is about to go.

It's got over 128,000 on the clock and I'm wondering if cold weather and exhaust leaks can cause a misfire upon startup at colder temperatures along with the O2 Sensor Downstream Bank 1 Sensor 2 to act funny as well? It runs fine after running for 2-3 minutes and my weekend project is to replace that water pump, A/C compressor pulley bearing, exhaust leak repairs, and change the oil.


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Yes if the exhaust leak is bad enough, it can.


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