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i have a 99 f350 5.4L gasser and recently its shakin like a motha f*

i thought at first it was my alignment. but then i stopped the truck. and it just shakes. im positive its something with the motor. if i dont give her a decent amount of gas when accelerating it shakes like crazy. its not as bad when i get going over 60 though. :/

any ideas?
 

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I would guss a bad coil pac, its very common on those motors.
 

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PMR = JUNK
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Definitely something with the ignition system. Plugs, wires, coil pack. Id probably just replace them all.
 

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It sounds like electrical but could it also be an injector?
 

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PMR = JUNK
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It sounds like electrical but could it also be an injector?
Its possible i guess, but its really most likely the ignition system needing a tune up.
 

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you can get coil pacs from summit racing for $20-25 bucks ea
that and a set of plugs should make your truck run great.
 

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PMR = JUNK
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11,244 Posts
you can get coil pacs from summit racing for $20-25 bucks ea
that and a set of plugs should make your truck run great.
Don't forget wires too though.:nod:
 

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PMR = JUNK
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there coil-on-plug, no wires just plug boots
Oh, gotcha.:thumb: Didn't know that. Im not the most knowledgeable on the technicals of the newer ford gassers.
 
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