bucking at constant speed
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Senior Member
Joined: Sep 2003
Posts: 157
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From: aptos, ca
bucking at constant speed
My '01 screw has 260+ miles on it. while 2 plugs have blown out and were replaced;
the rest were original.
driving on the freeway, keeping a 65-70mph rate,
i get a bucking that feels like an ignition miss.
apparently its not, the computer failed to register any misfires and
i had all the plugs replaced.
the symptom is reduced, but still there a bit.
does this sound like a familiar problem to anyone?
all suggestions appreciated, thx, jackc...
the rest were original.
driving on the freeway, keeping a 65-70mph rate,
i get a bucking that feels like an ignition miss.
apparently its not, the computer failed to register any misfires and
i had all the plugs replaced.
the symptom is reduced, but still there a bit.
does this sound like a familiar problem to anyone?
all suggestions appreciated, thx, jackc...
Senior Member
Joined: Dec 2006
Posts: 43,530
Likes: 817
From: Joplin MO
Senior Member
Joined: Jan 2009
Posts: 109
Likes: 0
I had this problem as well in between 45-55 mph, changed all the plugs and COPs with no fix. Changed the fuel filter and viola, bucking stopped. Run some seafoam or lucas full fuel system treatment through your tank after replacing the filter, just in case you got some gummed up injectors and you should be good to go.
Try changing the fuel filter first, alot less money then new COPs.
Hope this helps!
Try changing the fuel filter first, alot less money then new COPs.
Hope this helps!
Last edited by Dankh02'F150; May 11, 2010 at 03:52 PM.
