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Old Nov 9, 2010 | 10:59 AM
  #1  
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Question PO 541

My F350 started running like it had a miss yesterday. Lots of smoke and rough running. It was raining and cold out. This morning it was the same. I let it warm up and went to a trans shop to put it on the computer. I drove about 3 miles and maybe a half mile before I got there it started running fine. I had him test it anyway. It only had one code - PO 541. Would the intake heater make it run rough? And if so what made it go back to normal? Thanks for any help.
 
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Old Nov 9, 2010 | 12:32 PM
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The Air Intake Heater will not affect your truck running poorly. It's only activated for extended idling and under certain conditions.
 
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Old Nov 9, 2010 | 03:44 PM
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Thanks for the reply. What would cause it to throw a code? A relay problem? or ??
 
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Old Nov 9, 2010 | 05:25 PM
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Could this in any way be a PCM problem?
 
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Old Nov 9, 2010 | 07:29 PM
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Does it only happen when it's raining out?
 
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Old Nov 9, 2010 | 07:34 PM
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It is the first time I got a 541. It had a problem about a month ago but for different reasons. It ran bad this morning and the sun was out.
 
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