rough idle when temp under -30
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Joined: Feb 2008
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rough idle when temp under -30
Everytime I start my 2011 f250 6.2, with ambient temperature at -30 or colder. I get an extremely rough idle for roughly 10 to 30 seconds in length. Sounds like it is running on only 4 cylinders, then you I will hear a popping noise and it idles normally after that. My guess is an exhaust restriction of some sort, maybe egr valve related. It never throws a code during or after the rough idle. Also doesn't matter if its plugged in or not. Any ideas? Also truck has roughly 100k miles on it.
Laughing Gas
Joined: Jul 2012
Posts: 1,210
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From: prince george, bc canada
Mine did this for the first time yesterday. It only idled rough for about 5 seconds but this is the first time. I run royal purple 5/20. I usually plug my truck in but didn't have it plugged in yesterday. It was -24C.
Senior User
Joined: Mar 2004
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From: Moose Jaw Saskatchewan
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Tuned
Joined: May 2008
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Everytime I start my 2011 f250 6.2, with ambient temperature at -30 or colder. I get an extremely rough idle for roughly 10 to 30 seconds in length. Sounds like it is running on only 4 cylinders, then you I will hear a popping noise and it idles normally after that. My guess is an exhaust restriction of some sort, maybe egr valve related. It never throws a code during or after the rough idle. Also doesn't matter if its plugged in or not. Any ideas? Also truck has 100k miles on it.
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