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Throttle bucking

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Old Oct 1, 2013 | 07:46 PM
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Throttle bucking
Just bought a 04 f150 5.4. When accelerating to go up a hill the truck will buck or shudder till you throttle through it. Any ideas?
 
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Old Oct 1, 2013 | 07:47 PM
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Like the transmission doesn't know what gear it wants to be in
 
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Old Oct 1, 2013 | 08:37 PM
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Any codes ?
 
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Old Oct 1, 2013 | 08:45 PM
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No engine light but that doesn't mean the previous owner didn't turn off the engine light. Will go see if there's any stored codes tomorrow
 
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Old Oct 1, 2013 | 08:57 PM
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sounds like a miss fire to me . Ck for codes , pending codes , and mode 6 . Cyl cont. test would be helpful if you can . Look at fuel trims , long and short, if nothing else . That can lead you to the offending bank . Just a thought !
 
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Old Oct 1, 2013 | 09:12 PM
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We'll after doing some researching the ticking I'm getting after engine warms up could be cam phasers. What and where are the cam phasers lol?
 
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Old Oct 3, 2013 | 10:48 PM
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Sounds like a misfire. It's probably time to replace the sparkplugs.
 
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Old Oct 4, 2013 | 06:40 AM
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Went and had codes read and came up with a 2&3 misfire but was told it needed a valve job. Taking it in to have valves done then gonna get plug and coil pack tuneup
 
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Old Oct 4, 2013 | 07:18 AM
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Good luck with that.
 
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Old Oct 4, 2013 | 07:36 AM
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Truck has warranty thank god
 
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Old Oct 4, 2013 | 09:45 AM
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If none of the above posted solves it, it might also be a bad TPS throttle position sensor.
 
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Old Oct 4, 2013 | 09:49 AM
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Can't you test a tps by using the cruise control?
 
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Old Oct 4, 2013 | 10:43 PM
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Originally Posted by cory5517
Went and had codes read and came up with a 2&3 misfire but was told it needed a valve job. Taking it in to have valves done then gonna get plug and coil pack tuneup
That makes no sense ! Smells fishy to me !
 
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Old Oct 5, 2013 | 08:08 AM
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The valve job part?
 
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Old Oct 5, 2013 | 08:09 AM
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I think it needs a coil and plug tuneup and cam phasers
 
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