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miss fire number 4 cylinder

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  #1  
Old 02-11-2018, 12:12 PM
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miss fire number 4 cylinder

new COP did COP swap changed plug signal does not pulse when truck is running 05 expedition
 
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  #2  
Old 02-11-2018, 08:34 PM
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Did you try moving the COP to another cylinder to verify the new one is good?
 
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  #3  
Old 02-12-2018, 07:40 PM
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Originally Posted by ManualF150 View Post
Did you try moving the COP to another cylinder to verify the new one is good?
Yes i verified that multiple times ....My next victim is the ECM my stumble at this point is what ill call it ... Wasn't a misfire as i looked further into things i started to get the ole
CHECK THROTTLE code and it went down hill from there .... Its impossible the throttle body is brand new and works awesome on a buddy of mines truck when i switched it out with his to see what was up ...We will sure see in a few days when the new one arrives
 
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