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Old Mar 9, 2009 | 05:35 PM
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catan70
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Quick question

I have a 2002 f150 w/5.4 it has 100k miles and has been flawless so far. I have noticed though when im drivin inbetween about 55-62 mph there is a slight shudder to the truck. It only happens at between those speeds, and will occur again and again every 10 seconds or so. I dont know if its coming from the tranny or from the motor. Any ideas what it is. thanks
 
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Old Mar 9, 2009 | 05:46 PM
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n5926g
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From: Hernando Ms
Does the shudder happen at a shift point,or under normal driving?
If its not at a shift point,Id suggest a good professional fuel injector cleaning. You might also replace the fuel filter prior to the injector service...
 
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Old Mar 9, 2009 | 06:18 PM
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thanks for the quick reply no its not during a shift point its while i am drivin down the freeway at those speeds.
 
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Old Mar 9, 2009 | 06:33 PM
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n5926g
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From: Hernando Ms
I would have the fuel injectors cleaned,at least get some LUCAS fuel injecor cleaner...run it in a tank or two,and see if it helps.
 
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Old Mar 9, 2009 | 07:17 PM
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sounds good ill give it a try and see how it goes. i appreciate the responses.
 
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